diff --git a/www/build/README.md b/www/build/README.md new file mode 100644 index 0000000..6f49ee0 --- /dev/null +++ b/www/build/README.md @@ -0,0 +1,3 @@ +Source: https://github.com/auduno/clmtrackr +License: MIT + https://raw.githubusercontent.com/auduno/clmtrackr/dev/LICENSE.txt diff --git a/www/build/clmtrackr.js b/www/build/clmtrackr.js new file mode 100644 index 0000000..ad9beb8 --- /dev/null +++ b/www/build/clmtrackr.js @@ -0,0 +1,15325 @@ +(function (global, factory) { + typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() : + typeof define === 'function' && define.amd ? define(factory) : + (global.clm = factory()); +}(this, (function () { 'use strict'; + +var commonjsGlobal = typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {}; + + + + + +function createCommonjsModule(fn, module) { + return module = { exports: {} }, fn(module, module.exports), module.exports; +} + +var numeric1_2_6 = createCommonjsModule(function (module, exports) { +"use strict"; + +var numeric = exports; +if(typeof commonjsGlobal !== "undefined") { commonjsGlobal.numeric = numeric; } + +numeric.version = "1.2.6"; + +// 1. Utility functions +numeric.bench = function bench (f,interval) { + var t1,t2,n,i; + if(typeof interval === "undefined") { interval = 15; } + n = 0.5; + t1 = new Date(); + while(1) { + n*=2; + for(i=n;i>3;i-=4) { f(); f(); f(); f(); } + while(i>0) { f(); i--; } + t2 = new Date(); + if(t2-t1 > interval) break; + } + for(i=n;i>3;i-=4) { f(); f(); f(); f(); } + while(i>0) { f(); i--; } + t2 = new Date(); + return 1000*(3*n-1)/(t2-t1); +}; + +numeric._myIndexOf = (function _myIndexOf(w) { + var n = this.length,k; + for(k=0;k numeric.largeArray) { ret.push('...Large Array...'); return true; } + var flag = false; + ret.push('['); + for(k=0;k0) { ret.push(','); if(flag) ret.push('\n '); } flag = foo(x[k]); } + ret.push(']'); + return true; + } + ret.push('{'); + var flag = false; + for(k in x) { if(x.hasOwnProperty(k)) { if(flag) ret.push(',\n'); flag = true; ret.push(k); ret.push(': \n'); foo(x[k]); } } + ret.push('}'); + return true; + } + foo(x); + return ret.join(''); +}; + +numeric.parseDate = function parseDate(d) { + function foo(d) { + if(typeof d === 'string') { return Date.parse(d.replace(/-/g,'/')); } + if(!(d instanceof Array)) { throw new Error("parseDate: parameter must be arrays of strings"); } + var ret = [],k; + for(k=0;k0) { + ret[count] = []; + for(j=0;j> 2; + q = ((x & 3) << 4) + (y >> 4); + r = ((y & 15) << 2) + (z >> 6); + s = z & 63; + if(i+1>=n) { r = s = 64; } + else if(i+2>=n) { s = 64; } + ret += key.charAt(p) + key.charAt(q) + key.charAt(r) + key.charAt(s); + } + return ret; + } + function crc32Array (a,from,to) { + if(typeof from === "undefined") { from = 0; } + if(typeof to === "undefined") { to = a.length; } + var table = [0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3, + 0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988, 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91, + 0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7, + 0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5, + 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172, 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, + 0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59, + 0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F, + 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924, 0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D, + 0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433, + 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01, + 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E, 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457, + 0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65, + 0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB, + 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0, 0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9, + 0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F, + 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD, + 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A, 0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683, + 0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1, + 0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7, + 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC, 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, + 0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B, + 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79, + 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236, 0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F, + 0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D, + 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713, + 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38, 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21, + 0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777, + 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45, + 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2, 0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB, + 0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9, + 0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF, + 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94, 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D]; + + var crc = -1, y = 0, n = a.length,i; + + for (i = from; i < to; i++) { + y = (crc ^ a[i]) & 0xFF; + crc = (crc >>> 8) ^ table[y]; + } + + return crc ^ (-1); + } + + var h = img[0].length, w = img[0][0].length, s1, s2, next,k,length,a,b,i,j,adler32,crc32; + var stream = [ + 137, 80, 78, 71, 13, 10, 26, 10, // 0: PNG signature + 0,0,0,13, // 8: IHDR Chunk length + 73, 72, 68, 82, // 12: "IHDR" + (w >> 24) & 255, (w >> 16) & 255, (w >> 8) & 255, w&255, // 16: Width + (h >> 24) & 255, (h >> 16) & 255, (h >> 8) & 255, h&255, // 20: Height + 8, // 24: bit depth + 2, // 25: RGB + 0, // 26: deflate + 0, // 27: no filter + 0, // 28: no interlace + -1,-2,-3,-4, // 29: CRC + -5,-6,-7,-8, // 33: IDAT Chunk length + 73, 68, 65, 84, // 37: "IDAT" + // RFC 1950 header starts here + 8, // 41: RFC1950 CMF + 29 // 42: RFC1950 FLG + ]; + crc32 = crc32Array(stream,12,29); + stream[29] = (crc32>>24)&255; + stream[30] = (crc32>>16)&255; + stream[31] = (crc32>>8)&255; + stream[32] = (crc32)&255; + s1 = 1; + s2 = 0; + for(i=0;i>8)&255; + stream.push(a); stream.push(b); + stream.push((~a)&255); stream.push((~b)&255); + if(i===0) stream.push(0); + for(j=0;j255) a = 255; + else if(a<0) a=0; + else a = Math.round(a); + s1 = (s1 + a )%65521; + s2 = (s2 + s1)%65521; + stream.push(a); + } + } + stream.push(0); + } + adler32 = (s2<<16)+s1; + stream.push((adler32>>24)&255); + stream.push((adler32>>16)&255); + stream.push((adler32>>8)&255); + stream.push((adler32)&255); + length = stream.length - 41; + stream[33] = (length>>24)&255; + stream[34] = (length>>16)&255; + stream[35] = (length>>8)&255; + stream[36] = (length)&255; + crc32 = crc32Array(stream,37); + stream.push((crc32>>24)&255); + stream.push((crc32>>16)&255); + stream.push((crc32>>8)&255); + stream.push((crc32)&255); + stream.push(0); + stream.push(0); + stream.push(0); + stream.push(0); +// a = stream.length; + stream.push(73); // I + stream.push(69); // E + stream.push(78); // N + stream.push(68); // D + stream.push(174); // CRC1 + stream.push(66); // CRC2 + stream.push(96); // CRC3 + stream.push(130); // CRC4 + return 'data:image/png;base64,'+base64(stream); +}; + +// 2. Linear algebra with Arrays. +numeric._dim = function _dim(x) { + var ret = []; + while(typeof x === "object") { ret.push(x.length); x = x[0]; } + return ret; +}; + +numeric.dim = function dim(x) { + var y,z; + if(typeof x === "object") { + y = x[0]; + if(typeof y === "object") { + z = y[0]; + if(typeof z === "object") { + return numeric._dim(x); + } + return [x.length,y.length]; + } + return [x.length]; + } + return []; +}; + +numeric.mapreduce = function mapreduce(body,init) { + return Function('x','accum','_s','_k', + 'if(typeof accum === "undefined") accum = '+init+';\n'+ + 'if(typeof x === "number") { var xi = x; '+body+'; return accum; }\n'+ + 'if(typeof _s === "undefined") _s = numeric.dim(x);\n'+ + 'if(typeof _k === "undefined") _k = 0;\n'+ + 'var _n = _s[_k];\n'+ + 'var i,xi;\n'+ + 'if(_k < _s.length-1) {\n'+ + ' for(i=_n-1;i>=0;i--) {\n'+ + ' accum = arguments.callee(x[i],accum,_s,_k+1);\n'+ + ' }'+ + ' return accum;\n'+ + '}\n'+ + 'for(i=_n-1;i>=1;i-=2) { \n'+ + ' xi = x[i];\n'+ + ' '+body+';\n'+ + ' xi = x[i-1];\n'+ + ' '+body+';\n'+ + '}\n'+ + 'if(i === 0) {\n'+ + ' xi = x[i];\n'+ + ' '+body+'\n'+ + '}\n'+ + 'return accum;' + ); +}; +numeric.mapreduce2 = function mapreduce2(body,setup) { + return Function('x', + 'var n = x.length;\n'+ + 'var i,xi;\n'+setup+';\n'+ + 'for(i=n-1;i!==-1;--i) { \n'+ + ' xi = x[i];\n'+ + ' '+body+';\n'+ + '}\n'+ + 'return accum;' + ); +}; + + +numeric.same = function same(x,y) { + var i,n; + if(!(x instanceof Array) || !(y instanceof Array)) { return false; } + n = x.length; + if(n !== y.length) { return false; } + for(i=0;i=0;i-=2) { ret[i+1] = v; ret[i] = v; } + if(i===-1) { ret[0] = v; } + return ret; + } + for(i=n-1;i>=0;i--) { ret[i] = numeric.rep(s,v,k+1); } + return ret; +}; + + +numeric.dotMMsmall = function dotMMsmall(x,y) { + var i,j,k,p,q,r,ret,foo,bar,woo,i0,k0,p0,r0; + p = x.length; q = y.length; r = y[0].length; + ret = Array(p); + for(i=p-1;i>=0;i--) { + foo = Array(r); + bar = x[i]; + for(k=r-1;k>=0;k--) { + woo = bar[q-1]*y[q-1][k]; + for(j=q-2;j>=1;j-=2) { + i0 = j-1; + woo += bar[j]*y[j][k] + bar[i0]*y[i0][k]; + } + if(j===0) { woo += bar[0]*y[0][k]; } + foo[k] = woo; + } + ret[i] = foo; + } + return ret; +}; +numeric._getCol = function _getCol(A,j,x) { + var n = A.length, i; + for(i=n-1;i>0;--i) { + x[i] = A[i][j]; + --i; + x[i] = A[i][j]; + } + if(i===0) x[0] = A[0][j]; +}; +numeric.dotMMbig = function dotMMbig(x,y){ + var gc = numeric._getCol, p = y.length, v = Array(p); + var m = x.length, n = y[0].length, A = new Array(m), xj; + var VV = numeric.dotVV; + var i,j,k,z; + --p; + --m; + for(i=m;i!==-1;--i) A[i] = Array(n); + --n; + for(i=n;i!==-1;--i) { + gc(y,i,v); + for(j=m;j!==-1;--j) { + z=0; + xj = x[j]; + A[j][i] = VV(xj,v); + } + } + return A; +}; + +numeric.dotMV = function dotMV(x,y) { + var p = x.length, q = y.length,i; + var ret = Array(p), dotVV = numeric.dotVV; + for(i=p-1;i>=0;i--) { ret[i] = dotVV(x[i],y); } + return ret; +}; + +numeric.dotVM = function dotVM(x,y) { + var i,j,k,p,q,r,ret,foo,bar,woo,i0,k0,p0,r0,s1,s2,s3,baz,accum; + p = x.length; q = y[0].length; + ret = Array(q); + for(k=q-1;k>=0;k--) { + woo = x[p-1]*y[p-1][k]; + for(j=p-2;j>=1;j-=2) { + i0 = j-1; + woo += x[j]*y[j][k] + x[i0]*y[i0][k]; + } + if(j===0) { woo += x[0]*y[0][k]; } + ret[k] = woo; + } + return ret; +}; + +numeric.dotVV = function dotVV(x,y) { + var i,n=x.length,i1,ret = x[n-1]*y[n-1]; + for(i=n-2;i>=1;i-=2) { + i1 = i-1; + ret += x[i]*y[i] + x[i1]*y[i1]; + } + if(i===0) { ret += x[0]*y[0]; } + return ret; +}; + +numeric.dot = function dot(x,y) { + var d = numeric.dim; + switch(d(x).length*1000+d(y).length) { + case 2002: + if(y.length < 10) return numeric.dotMMsmall(x,y); + else return numeric.dotMMbig(x,y); + case 2001: return numeric.dotMV(x,y); + case 1002: return numeric.dotVM(x,y); + case 1001: return numeric.dotVV(x,y); + case 1000: return numeric.mulVS(x,y); + case 1: return numeric.mulSV(x,y); + case 0: return x*y; + default: throw new Error('numeric.dot only works on vectors and matrices'); + } +}; + +numeric.diag = function diag(d) { + var i,i1,j,n = d.length, A = Array(n), Ai; + for(i=n-1;i>=0;i--) { + Ai = Array(n); + i1 = i+2; + for(j=n-1;j>=i1;j-=2) { + Ai[j] = 0; + Ai[j-1] = 0; + } + if(j>i) { Ai[j] = 0; } + Ai[i] = d[i]; + for(j=i-1;j>=1;j-=2) { + Ai[j] = 0; + Ai[j-1] = 0; + } + if(j===0) { Ai[0] = 0; } + A[i] = Ai; + } + return A; +}; +numeric.getDiag = function(A) { + var n = Math.min(A.length,A[0].length),i,ret = Array(n); + for(i=n-1;i>=1;--i) { + ret[i] = A[i][i]; + --i; + ret[i] = A[i][i]; + } + if(i===0) { + ret[0] = A[0][0]; + } + return ret; +}; + +numeric.identity = function identity(n) { return numeric.diag(numeric.rep([n],1)); }; +numeric.pointwise = function pointwise(params,body,setup) { + if(typeof setup === "undefined") { setup = ""; } + var fun = []; + var k; + var avec = /\[i\]$/,p,thevec = ''; + var haveret = false; + for(k=0;k=0;i--) ret[i] = arguments.callee('+params.join(',')+',_s,_k+1);\n'+ + ' return ret;\n'+ + '}\n'+ + setup+'\n'+ + 'for(i=_n-1;i!==-1;--i) {\n'+ + ' '+body+'\n'+ + '}\n'+ + 'return ret;' + ); + return Function.apply(null,fun); +}; +numeric.pointwise2 = function pointwise2(params,body,setup) { + if(typeof setup === "undefined") { setup = ""; } + var fun = []; + var k; + var avec = /\[i\]$/,p,thevec = ''; + var haveret = false; + for(k=0;k=0;i--) { _biforeach(typeof x==="object"?x[i]:x,typeof y==="object"?y[i]:y,s,k+1,f); } +}); +numeric._biforeach2 = (function _biforeach2(x,y,s,k,f) { + if(k === s.length-1) { return f(x,y); } + var i,n=s[k],ret = Array(n); + for(i=n-1;i>=0;--i) { ret[i] = _biforeach2(typeof x==="object"?x[i]:x,typeof y==="object"?y[i]:y,s,k+1,f); } + return ret; +}); +numeric._foreach = (function _foreach(x,s,k,f) { + if(k === s.length-1) { f(x); return; } + var i,n=s[k]; + for(i=n-1;i>=0;i--) { _foreach(x[i],s,k+1,f); } +}); +numeric._foreach2 = (function _foreach2(x,s,k,f) { + if(k === s.length-1) { return f(x); } + var i,n=s[k], ret = Array(n); + for(i=n-1;i>=0;i--) { ret[i] = _foreach2(x[i],s,k+1,f); } + return ret; +}); + +/*numeric.anyV = numeric.mapreduce('if(xi) return true;','false'); +numeric.allV = numeric.mapreduce('if(!xi) return false;','true'); +numeric.any = function(x) { if(typeof x.length === "undefined") return x; return numeric.anyV(x); } +numeric.all = function(x) { if(typeof x.length === "undefined") return x; return numeric.allV(x); }*/ + +numeric.ops2 = { + add: '+', + sub: '-', + mul: '*', + div: '/', + mod: '%', + and: '&&', + or: '||', + eq: '===', + neq: '!==', + lt: '<', + gt: '>', + leq: '<=', + geq: '>=', + band: '&', + bor: '|', + bxor: '^', + lshift: '<<', + rshift: '>>', + rrshift: '>>>' +}; +numeric.opseq = { + addeq: '+=', + subeq: '-=', + muleq: '*=', + diveq: '/=', + modeq: '%=', + lshifteq: '<<=', + rshifteq: '>>=', + rrshifteq: '>>>=', + bandeq: '&=', + boreq: '|=', + bxoreq: '^=' +}; +numeric.mathfuns = ['abs','acos','asin','atan','ceil','cos', + 'exp','floor','log','round','sin','sqrt','tan', + 'isNaN','isFinite']; +numeric.mathfuns2 = ['atan2','pow','max','min']; +numeric.ops1 = { + neg: '-', + not: '!', + bnot: '~', + clone: '' +}; +numeric.mapreducers = { + any: ['if(xi) return true;','var accum = false;'], + all: ['if(!xi) return false;','var accum = true;'], + sum: ['accum += xi;','var accum = 0;'], + prod: ['accum *= xi;','var accum = 1;'], + norm2Squared: ['accum += xi*xi;','var accum = 0;'], + norminf: ['accum = max(accum,abs(xi));','var accum = 0, max = Math.max, abs = Math.abs;'], + norm1: ['accum += abs(xi)','var accum = 0, abs = Math.abs;'], + sup: ['accum = max(accum,xi);','var accum = -Infinity, max = Math.max;'], + inf: ['accum = min(accum,xi);','var accum = Infinity, min = Math.min;'] +}; + +(function () { + var i,o; + for(i=0;iv0) { i0 = i; v0 = k; } } + Aj = A[i0]; A[i0] = A[j]; A[j] = Aj; + Ij = I[i0]; I[i0] = I[j]; I[j] = Ij; + x = Aj[j]; + for(k=j;k!==n;++k) Aj[k] /= x; + for(k=n-1;k!==-1;--k) Ij[k] /= x; + for(i=m-1;i!==-1;--i) { + if(i!==j) { + Ai = A[i]; + Ii = I[i]; + x = Ai[j]; + for(k=j+1;k!==n;++k) Ai[k] -= Aj[k]*x; + for(k=n-1;k>0;--k) { Ii[k] -= Ij[k]*x; --k; Ii[k] -= Ij[k]*x; } + if(k===0) Ii[0] -= Ij[0]*x; + } + } + } + return I; +}; + +numeric.det = function det(x) { + var s = numeric.dim(x); + if(s.length !== 2 || s[0] !== s[1]) { throw new Error('numeric: det() only works on square matrices'); } + var n = s[0], ret = 1,i,j,k,A = numeric.clone(x),Aj,Ai,alpha,temp,k1,k2,k3; + for(j=0;j Math.abs(A[k][j])) { k = i; } } + if(k !== j) { + temp = A[k]; A[k] = A[j]; A[j] = temp; + ret *= -1; + } + Aj = A[j]; + for(i=j+1;i=1;i-=2) { + A1 = x[i]; + A0 = x[i-1]; + for(j=n-1;j>=1;--j) { + Bj = ret[j]; Bj[i] = A1[j]; Bj[i-1] = A0[j]; + --j; + Bj = ret[j]; Bj[i] = A1[j]; Bj[i-1] = A0[j]; + } + if(j===0) { + Bj = ret[0]; Bj[i] = A1[0]; Bj[i-1] = A0[0]; + } + } + if(i===0) { + A0 = x[0]; + for(j=n-1;j>=1;--j) { + ret[j][0] = A0[j]; + --j; + ret[j][0] = A0[j]; + } + if(j===0) { ret[0][0] = A0[0]; } + } + return ret; +}; +numeric.negtranspose = function negtranspose(x) { + var i,j,m = x.length,n = x[0].length, ret=Array(n),A0,A1,Bj; + for(j=0;j=1;i-=2) { + A1 = x[i]; + A0 = x[i-1]; + for(j=n-1;j>=1;--j) { + Bj = ret[j]; Bj[i] = -A1[j]; Bj[i-1] = -A0[j]; + --j; + Bj = ret[j]; Bj[i] = -A1[j]; Bj[i-1] = -A0[j]; + } + if(j===0) { + Bj = ret[0]; Bj[i] = -A1[0]; Bj[i-1] = -A0[0]; + } + } + if(i===0) { + A0 = x[0]; + for(j=n-1;j>=1;--j) { + ret[j][0] = -A0[j]; + --j; + ret[j][0] = -A0[j]; + } + if(j===0) { ret[0][0] = -A0[0]; } + } + return ret; +}; + +numeric._random = function _random(s,k) { + var i,n=s[k],ret=Array(n), rnd; + if(k === s.length-1) { + rnd = Math.random; + for(i=n-1;i>=1;i-=2) { + ret[i] = rnd(); + ret[i-1] = rnd(); + } + if(i===0) { ret[0] = rnd(); } + return ret; + } + for(i=n-1;i>=0;i--) ret[i] = _random(s,k+1); + return ret; +}; +numeric.random = function random(s) { return numeric._random(s,0); }; + +numeric.norm2 = function norm2(x) { return Math.sqrt(numeric.norm2Squared(x)); }; + +numeric.linspace = function linspace(a,b,n) { + if(typeof n === "undefined") n = Math.max(Math.round(b-a)+1,1); + if(n<2) { return n===1?[a]:[]; } + var i,ret = Array(n); + n--; + for(i=n;i>=0;i--) { ret[i] = (i*b+(n-i)*a)/n; } + return ret; +}; + +numeric.getBlock = function getBlock(x,from,to) { + var s = numeric.dim(x); + function foo(x,k) { + var i,a = from[k], n = to[k]-a, ret = Array(n); + if(k === s.length-1) { + for(i=n;i>=0;i--) { ret[i] = x[i+a]; } + return ret; + } + for(i=n;i>=0;i--) { ret[i] = foo(x[i+a],k+1); } + return ret; + } + return foo(x,0); +}; + +numeric.setBlock = function setBlock(x,from,to,B) { + var s = numeric.dim(x); + function foo(x,y,k) { + var i,a = from[k], n = to[k]-a; + if(k === s.length-1) { for(i=n;i>=0;i--) { x[i+a] = y[i]; } } + for(i=n;i>=0;i--) { foo(x[i+a],y[i],k+1); } + } + foo(x,B,0); + return x; +}; + +numeric.getRange = function getRange(A,I,J) { + var m = I.length, n = J.length; + var i,j; + var B = Array(m), Bi, AI; + for(i=m-1;i!==-1;--i) { + B[i] = Array(n); + Bi = B[i]; + AI = A[I[i]]; + for(j=n-1;j!==-1;--j) Bi[j] = AI[J[j]]; + } + return B; +}; + +numeric.blockMatrix = function blockMatrix(X) { + var s = numeric.dim(X); + if(s.length<4) return numeric.blockMatrix([X]); + var m=s[0],n=s[1],M,N,i,j,Xij; + M = 0; N = 0; + for(i=0;i=0;i--) { + Ai = Array(n); + xi = x[i]; + for(j=n-1;j>=3;--j) { + Ai[j] = xi * y[j]; + --j; + Ai[j] = xi * y[j]; + --j; + Ai[j] = xi * y[j]; + --j; + Ai[j] = xi * y[j]; + } + while(j>=0) { Ai[j] = xi * y[j]; --j; } + A[i] = Ai; + } + return A; +}; + +// 3. The Tensor type T +numeric.T = function T(x,y) { this.x = x; this.y = y; }; +numeric.t = function t(x,y) { return new numeric.T(x,y); }; + +numeric.Tbinop = function Tbinop(rr,rc,cr,cc,setup) { + var io = numeric.indexOf; + if(typeof setup !== "string") { + var k; + setup = ''; + for(k in numeric) { + if(numeric.hasOwnProperty(k) && (rr.indexOf(k)>=0 || rc.indexOf(k)>=0 || cr.indexOf(k)>=0 || cc.indexOf(k)>=0) && k.length>1) { + setup += 'var '+k+' = numeric.'+k+';\n'; + } + } + } + return Function(['y'], + 'var x = this;\n'+ + 'if(!(y instanceof numeric.T)) { y = new numeric.T(y); }\n'+ + setup+'\n'+ + 'if(x.y) {'+ + ' if(y.y) {'+ + ' return new numeric.T('+cc+');\n'+ + ' }\n'+ + ' return new numeric.T('+cr+');\n'+ + '}\n'+ + 'if(y.y) {\n'+ + ' return new numeric.T('+rc+');\n'+ + '}\n'+ + 'return new numeric.T('+rr+');\n' + ); +}; + +numeric.T.prototype.add = numeric.Tbinop( + 'add(x.x,y.x)', + 'add(x.x,y.x),y.y', + 'add(x.x,y.x),x.y', + 'add(x.x,y.x),add(x.y,y.y)'); +numeric.T.prototype.sub = numeric.Tbinop( + 'sub(x.x,y.x)', + 'sub(x.x,y.x),neg(y.y)', + 'sub(x.x,y.x),x.y', + 'sub(x.x,y.x),sub(x.y,y.y)'); +numeric.T.prototype.mul = numeric.Tbinop( + 'mul(x.x,y.x)', + 'mul(x.x,y.x),mul(x.x,y.y)', + 'mul(x.x,y.x),mul(x.y,y.x)', + 'sub(mul(x.x,y.x),mul(x.y,y.y)),add(mul(x.x,y.y),mul(x.y,y.x))'); + +numeric.T.prototype.reciprocal = function reciprocal() { + var mul = numeric.mul, div = numeric.div; + if(this.y) { + var d = numeric.add(mul(this.x,this.x),mul(this.y,this.y)); + return new numeric.T(div(this.x,d),div(numeric.neg(this.y),d)); + } + return new T(div(1,this.x)); +}; +numeric.T.prototype.div = function div(y) { + if(!(y instanceof numeric.T)) y = new numeric.T(y); + if(y.y) { return this.mul(y.reciprocal()); } + var div = numeric.div; + if(this.y) { return new numeric.T(div(this.x,y.x),div(this.y,y.x)); } + return new numeric.T(div(this.x,y.x)); +}; +numeric.T.prototype.dot = numeric.Tbinop( + 'dot(x.x,y.x)', + 'dot(x.x,y.x),dot(x.x,y.y)', + 'dot(x.x,y.x),dot(x.y,y.x)', + 'sub(dot(x.x,y.x),dot(x.y,y.y)),add(dot(x.x,y.y),dot(x.y,y.x))' + ); +numeric.T.prototype.transpose = function transpose() { + var t = numeric.transpose, x = this.x, y = this.y; + if(y) { return new numeric.T(t(x),t(y)); } + return new numeric.T(t(x)); +}; +numeric.T.prototype.transjugate = function transjugate() { + var t = numeric.transpose, x = this.x, y = this.y; + if(y) { return new numeric.T(t(x),numeric.negtranspose(y)); } + return new numeric.T(t(x)); +}; +numeric.Tunop = function Tunop(r,c,s) { + if(typeof s !== "string") { s = ''; } + return Function( + 'var x = this;\n'+ + s+'\n'+ + 'if(x.y) {'+ + ' '+c+';\n'+ + '}\n'+ + r+';\n' + ); +}; + +numeric.T.prototype.exp = numeric.Tunop( + 'return new numeric.T(ex)', + 'return new numeric.T(mul(cos(x.y),ex),mul(sin(x.y),ex))', + 'var ex = numeric.exp(x.x), cos = numeric.cos, sin = numeric.sin, mul = numeric.mul;'); +numeric.T.prototype.conj = numeric.Tunop( + 'return new numeric.T(x.x);', + 'return new numeric.T(x.x,numeric.neg(x.y));'); +numeric.T.prototype.neg = numeric.Tunop( + 'return new numeric.T(neg(x.x));', + 'return new numeric.T(neg(x.x),neg(x.y));', + 'var neg = numeric.neg;'); +numeric.T.prototype.sin = numeric.Tunop( + 'return new numeric.T(numeric.sin(x.x))', + 'return x.exp().sub(x.neg().exp()).div(new numeric.T(0,2));'); +numeric.T.prototype.cos = numeric.Tunop( + 'return new numeric.T(numeric.cos(x.x))', + 'return x.exp().add(x.neg().exp()).div(2);'); +numeric.T.prototype.abs = numeric.Tunop( + 'return new numeric.T(numeric.abs(x.x));', + 'return new numeric.T(numeric.sqrt(numeric.add(mul(x.x,x.x),mul(x.y,x.y))));', + 'var mul = numeric.mul;'); +numeric.T.prototype.log = numeric.Tunop( + 'return new numeric.T(numeric.log(x.x));', + 'var theta = new numeric.T(numeric.atan2(x.y,x.x)), r = x.abs();\n'+ + 'return new numeric.T(numeric.log(r.x),theta.x);'); +numeric.T.prototype.norm2 = numeric.Tunop( + 'return numeric.norm2(x.x);', + 'var f = numeric.norm2Squared;\n'+ + 'return Math.sqrt(f(x.x)+f(x.y));'); +numeric.T.prototype.inv = function inv() { + var A = this; + if(typeof A.y === "undefined") { return new numeric.T(numeric.inv(A.x)); } + var n = A.x.length, i, j, k; + var Rx = numeric.identity(n),Ry = numeric.rep([n,n],0); + var Ax = numeric.clone(A.x), Ay = numeric.clone(A.y); + var Aix, Aiy, Ajx, Ajy, Rix, Riy, Rjx, Rjy; + var i,j,k,d,d1,ax,ay,bx,by,temp; + for(i=0;i d) { k=j; d = d1; } + } + if(k!==i) { + temp = Ax[i]; Ax[i] = Ax[k]; Ax[k] = temp; + temp = Ay[i]; Ay[i] = Ay[k]; Ay[k] = temp; + temp = Rx[i]; Rx[i] = Rx[k]; Rx[k] = temp; + temp = Ry[i]; Ry[i] = Ry[k]; Ry[k] = temp; + } + Aix = Ax[i]; Aiy = Ay[i]; + Rix = Rx[i]; Riy = Ry[i]; + ax = Aix[i]; ay = Aiy[i]; + for(j=i+1;j0;i--) { + Rix = Rx[i]; Riy = Ry[i]; + for(j=i-1;j>=0;j--) { + Rjx = Rx[j]; Rjy = Ry[j]; + ax = Ax[j][i]; ay = Ay[j][i]; + for(k=n-1;k>=0;k--) { + bx = Rix[k]; by = Riy[k]; + Rjx[k] -= ax*bx - ay*by; + Rjy[k] -= ax*by + ay*bx; + } + } + } + return new numeric.T(Rx,Ry); +}; +numeric.T.prototype.get = function get(i) { + var x = this.x, y = this.y, k = 0, ik, n = i.length; + if(y) { + while(k= 0 ? 1 : -1; + var alpha = s*numeric.norm2(x); + v[0] += alpha; + var foo = numeric.norm2(v); + if(foo === 0) { /* this should not happen */ throw new Error('eig: internal error'); } + return numeric.div(v,foo); +}; + +numeric.toUpperHessenberg = function toUpperHessenberg(me) { + var s = numeric.dim(me); + if(s.length !== 2 || s[0] !== s[1]) { throw new Error('numeric: toUpperHessenberg() only works on square matrices'); } + var m = s[0], i,j,k,x,v,A = numeric.clone(me),B,C,Ai,Ci,Q = numeric.identity(m),Qi; + for(j=0;j0) { + v = numeric.house(x); + B = numeric.getBlock(A,[j+1,j],[m-1,m-1]); + C = numeric.tensor(v,numeric.dot(v,B)); + for(i=j+1;i=4*det) { + var s1,s2; + s1 = 0.5*(tr+Math.sqrt(tr*tr-4*det)); + s2 = 0.5*(tr-Math.sqrt(tr*tr-4*det)); + Hloc = numeric.add(numeric.sub(numeric.dot(Hloc,Hloc), + numeric.mul(Hloc,s1+s2)), + numeric.diag(numeric.rep([3],s1*s2))); + } else { + Hloc = numeric.add(numeric.sub(numeric.dot(Hloc,Hloc), + numeric.mul(Hloc,tr)), + numeric.diag(numeric.rep([3],det))); + } + x = [Hloc[0][0],Hloc[1][0],Hloc[2][0]]; + v = numeric.house(x); + B = [H[0],H[1],H[2]]; + C = numeric.tensor(v,numeric.dot(v,B)); + for(i=0;i<3;i++) { Hi = H[i]; Ci = C[i]; for(k=0;k=0) { + if(p1<0) x = -0.5*(p1-sqrt(disc)); + else x = -0.5*(p1+sqrt(disc)); + n1 = (a-x)*(a-x)+b*b; + n2 = c*c+(d-x)*(d-x); + if(n1>n2) { + n1 = sqrt(n1); + p = (a-x)/n1; + q = b/n1; + } else { + n2 = sqrt(n2); + p = c/n2; + q = (d-x)/n2; + } + Q0 = new T([[q,-p],[p,q]]); + Q.setRows(i,j,Q0.dot(Q.getRows(i,j))); + } else { + x = -0.5*p1; + y = 0.5*sqrt(-disc); + n1 = (a-x)*(a-x)+b*b; + n2 = c*c+(d-x)*(d-x); + if(n1>n2) { + n1 = sqrt(n1+y*y); + p = (a-x)/n1; + q = b/n1; + x = 0; + y /= n1; + } else { + n2 = sqrt(n2+y*y); + p = c/n2; + q = (d-x)/n2; + x = y/n2; + y = 0; + } + Q0 = new T([[q,-p],[p,q]],[[x,y],[y,-x]]); + Q.setRows(i,j,Q0.dot(Q.getRows(i,j))); + } + } + } + var R = Q.dot(A).dot(Q.transjugate()), n = A.length, E = numeric.T.identity(n); + for(j=0;j0) { + for(k=j-1;k>=0;k--) { + var Rk = R.get([k,k]), Rj = R.get([j,j]); + if(numeric.neq(Rk.x,Rj.x) || numeric.neq(Rk.y,Rj.y)) { + x = R.getRow(k).getBlock([k],[j-1]); + y = E.getRow(j).getBlock([k],[j-1]); + E.set([j,k],(R.get([k,j]).neg().sub(x.dot(y))).div(Rk.sub(Rj))); + } else { + E.setRow(j,E.getRow(k)); + continue; + } + } + } + } + for(j=0;j=counts.length) counts[counts.length] = 0; + if(foo[j]!==0) counts[j]++; + } + } + var n = counts.length; + var Ai = Array(n+1); + Ai[0] = 0; + for(i=0;i= k11) { + xj[n] = j[m]; + if(m===0) return; + ++n; + --m; + km = k[m]; + k11 = k1[m]; + } else { + foo = Pinv[Aj[km]]; + if(x[foo] === 0) { + x[foo] = 1; + k[m] = km; + ++m; + j[m] = foo; + km = Ai[foo]; + k1[m] = k11 = Ai[foo+1]; + } else ++km; + } + } +}; +numeric.ccsLPSolve = function ccsLPSolve(A,B,x,xj,I,Pinv,dfs) { + var Ai = A[0], Aj = A[1], Av = A[2],m = Ai.length-1, n=0; + var Bi = B[0], Bj = B[1], Bv = B[2]; + + var i,i0,i1,j,J,j0,j1,k,l,l0,l1,a; + i0 = Bi[I]; + i1 = Bi[I+1]; + xj.length = 0; + for(i=i0;i a) { e = k; a = c; } + } + if(abs(x[i])= k11) { + xj[n] = Pinv[j[m]]; + if(m===0) return; + ++n; + --m; + km = k[m]; + k11 = k1[m]; + } else { + foo = Aj[km]; + if(x[foo] === 0) { + x[foo] = 1; + k[m] = km; + ++m; + j[m] = foo; + foo = Pinv[foo]; + km = Ai[foo]; + k1[m] = k11 = Ai[foo+1]; + } else ++km; + } + } +}; +numeric.ccsLPSolve0 = function ccsLPSolve0(A,B,y,xj,I,Pinv,P,dfs) { + var Ai = A[0], Aj = A[1], Av = A[2],m = Ai.length-1, n=0; + var Bi = B[0], Bj = B[1], Bv = B[2]; + + var i,i0,i1,j,J,j0,j1,k,l,l0,l1,a; + i0 = Bi[I]; + i1 = Bi[I+1]; + xj.length = 0; + for(i=i0;i a) { e = k; a = c; } + } + if(abs(y[P[i]]) ret[k]) ret[k] = A.length; + var i; + for(i in A) { + if(A.hasOwnProperty(i)) dim(A[i],ret,k+1); + } + return ret; +}; + +numeric.sclone = function clone(A,k,n) { + if(typeof k === "undefined") { k=0; } + if(typeof n === "undefined") { n = numeric.sdim(A).length; } + var i,ret = Array(A.length); + if(k === n-1) { + for(i in A) { if(A.hasOwnProperty(i)) ret[i] = A[i]; } + return ret; + } + for(i in A) { + if(A.hasOwnProperty(i)) ret[i] = clone(A[i],k+1,n); + } + return ret; +}; + +numeric.sdiag = function diag(d) { + var n = d.length,i,ret = Array(n),i1,i2,i3; + for(i=n-1;i>=1;i-=2) { + i1 = i-1; + ret[i] = []; ret[i][i] = d[i]; + ret[i1] = []; ret[i1][i1] = d[i1]; + } + if(i===0) { ret[0] = []; ret[0][0] = d[i]; } + return ret; +}; + +numeric.sidentity = function identity(n) { return numeric.sdiag(numeric.rep([n],1)); }; + +numeric.stranspose = function transpose(A) { + var ret = [], n = A.length, i,j,Ai; + for(i in A) { + if(!(A.hasOwnProperty(i))) continue; + Ai = A[i]; + for(j in Ai) { + if(!(Ai.hasOwnProperty(j))) continue; + if(typeof ret[j] !== "object") { ret[j] = []; } + ret[j][i] = Ai[j]; + } + } + return ret; +}; + +numeric.sLUP = function LUP(A,tol) { + throw new Error("The function numeric.sLUP had a bug in it and has been removed. Please use the new numeric.ccsLUP function instead."); +}; + +numeric.sdotMM = function dotMM(A,B) { + var p = A.length, q = B.length, BT = numeric.stranspose(B), r = BT.length, Ai, BTk; + var i,j,k,accum; + var ret = Array(p),reti; + for(i=p-1;i>=0;i--) { + reti = []; + Ai = A[i]; + for(k=r-1;k>=0;k--) { + accum = 0; + BTk = BT[k]; + for(j in Ai) { + if(!(Ai.hasOwnProperty(j))) continue; + if(j in BTk) { accum += Ai[j]*BTk[j]; } + } + if(accum) reti[k] = accum; + } + ret[i] = reti; + } + return ret; +}; + +numeric.sdotMV = function dotMV(A,x) { + var p = A.length, Ai, i,j; + var ret = Array(p), accum; + for(i=p-1;i>=0;i--) { + Ai = A[i]; + accum = 0; + for(j in Ai) { + if(!(Ai.hasOwnProperty(j))) continue; + if(x[j]) accum += Ai[j]*x[j]; + } + if(accum) ret[i] = accum; + } + return ret; +}; + +numeric.sdotVM = function dotMV(x,A) { + var i,j,Ai,alpha; + var ret = [], accum; + for(i in x) { + if(!x.hasOwnProperty(i)) continue; + Ai = A[i]; + alpha = x[i]; + for(j in Ai) { + if(!Ai.hasOwnProperty(j)) continue; + if(!ret[j]) { ret[j] = 0; } + ret[j] += alpha*Ai[j]; + } + } + return ret; +}; + +numeric.sdotVV = function dotVV(x,y) { + var i,ret=0; + for(i in x) { if(x[i] && y[i]) ret+= x[i]*y[i]; } + return ret; +}; + +numeric.sdot = function dot(A,B) { + var m = numeric.sdim(A).length, n = numeric.sdim(B).length; + var k = m*1000+n; + switch(k) { + case 0: return A*B; + case 1001: return numeric.sdotVV(A,B); + case 2001: return numeric.sdotMV(A,B); + case 1002: return numeric.sdotVM(A,B); + case 2002: return numeric.sdotMM(A,B); + default: throw new Error('numeric.sdot not implemented for tensors of order '+m+' and '+n); + } +}; + +numeric.sscatter = function scatter(V) { + var n = V[0].length, Vij, i, j, m = V.length, A = [], Aj; + for(i=n-1;i>=0;--i) { + if(!V[m-1][i]) continue; + Aj = A; + for(j=0;j=0;--i) ret[i] = []; + } + for(i=n;i>=0;--i) ret[i].push(k[i]); + ret[n+1].push(Ai); + } + } else gather(Ai,ret,k); + } + } + if(k.length>n) k.pop(); + return ret; +}; + +// 6. Coordinate matrices +numeric.cLU = function LU(A) { + var I = A[0], J = A[1], V = A[2]; + var p = I.length, m=0, i,j,k,a,b,c; + for(i=0;im) m=I[i]; + m++; + var L = Array(m), U = Array(m), left = numeric.rep([m],Infinity), right = numeric.rep([m],-Infinity); + var Ui, Uj,alpha; + for(k=0;kright[i]) right[i] = j; + } + for(i=0;i right[i+1]) right[i+1] = right[i]; } + for(i=m-1;i>=1;i--) { if(left[i]=0;i--) { + while(Uj[k] > i) { + ret[i] -= Uv[k]*ret[Uj[k]]; + k--; + } + ret[i] /= Uv[k]; + k--; + } + return ret; +}; + +numeric.cgrid = function grid(n,shape) { + if(typeof n === "number") n = [n,n]; + var ret = numeric.rep(n,-1); + var i,j,count; + if(typeof shape !== "function") { + switch(shape) { + case 'L': + shape = function(i,j) { return (i>=n[0]/2 || jN) N = Ai[k]; } + N++; + ret = numeric.rep([N],0); + for(k=0;k1) { + mid = floor((p+q)/2); + if(x[mid] <= x0) p = mid; + else q = mid; + } + return this._at(x0,p); + } + var n = x0.length, i, ret = Array(n); + for(i=n-1;i!==-1;--i) ret[i] = this.at(x0[i]); + return ret; +}; +numeric.Spline.prototype.diff = function diff() { + var x = this.x; + var yl = this.yl; + var yr = this.yr; + var kl = this.kl; + var kr = this.kr; + var n = yl.length; + var i,dx,dy; + var zl = kl, zr = kr, pl = Array(n), pr = Array(n); + var add = numeric.add, mul = numeric.mul, div = numeric.div, sub = numeric.sub; + for(i=n-1;i!==-1;--i) { + dx = x[i+1]-x[i]; + dy = sub(yr[i+1],yl[i]); + pl[i] = div(add(mul(dy, 6),mul(kl[i],-4*dx),mul(kr[i+1],-2*dx)),dx*dx); + pr[i+1] = div(add(mul(dy,-6),mul(kl[i], 2*dx),mul(kr[i+1], 4*dx)),dx*dx); + } + return new numeric.Spline(x,zl,zr,pl,pr); +}; +numeric.Spline.prototype.roots = function roots() { + function sqr(x) { return x*x; } + var ret = []; + var x = this.x, yl = this.yl, yr = this.yr, kl = this.kl, kr = this.kr; + if(typeof yl[0] === "number") { + yl = [yl]; + yr = [yr]; + kl = [kl]; + kr = [kr]; + } + var m = yl.length,n=x.length-1,i,j,k,y,s,t; + var ai,bi,ci,di, ret = Array(m),ri,k0,k1,y0,y1,A,B,D,dx,cx,stops,z0,z1,zm,t0,t1,tm; + var sqrt = Math.sqrt; + for(i=0;i!==m;++i) { + ai = yl[i]; + bi = yr[i]; + ci = kl[i]; + di = kr[i]; + ri = []; + for(j=0;j!==n;j++) { + if(j>0 && bi[j]*ai[j]<0) ri.push(x[j]); + dx = (x[j+1]-x[j]); + cx = x[j]; + y0 = ai[j]; + y1 = bi[j+1]; + k0 = ci[j]/dx; + k1 = di[j+1]/dx; + D = sqr(k0-k1+3*(y0-y1)) + 12*k1*y0; + A = k1+3*y0+2*k0-3*y1; + B = 3*(k1+k0+2*(y0-y1)); + if(D<=0) { + z0 = A/B; + if(z0>x[j] && z0x[j] && z0x[j] && z10) { + t0 = t1; + z0 = z1; + continue; + } + var side = 0; + while(1) { + tm = (z0*t1-z1*t0)/(z0-z1); + if(tm <= t0 || tm >= t1) { break; } + zm = this._at(tm,j); + if(zm*z1>0) { + t1 = tm; + z1 = zm; + if(side === -1) z0*=0.5; + side = -1; + } else if(zm*z0>0) { + t0 = tm; + z0 = zm; + if(side === 1) z1*=0.5; + side = 1; + } else break; + } + ri.push(tm); + t0 = stops[k+1]; + z0 = this._at(t0, j); + } + if(z1 === 0) ri.push(t1); + } + ret[i] = ri; + } + if(typeof this.yl[0] === "number") return ret[0]; + return ret; +}; +numeric.spline = function spline(x,y,k1,kn) { + var n = x.length, b = [], dx = [], dy = []; + var i; + var sub = numeric.sub,mul = numeric.mul,add = numeric.add; + for(i=n-2;i>=0;i--) { dx[i] = x[i+1]-x[i]; dy[i] = sub(y[i+1],y[i]); } + if(typeof k1 === "string" || typeof kn === "string") { + k1 = kn = "periodic"; + } + // Build sparse tridiagonal system + var T = [[],[],[]]; + switch(typeof k1) { + case "undefined": + b[0] = mul(3/(dx[0]*dx[0]),dy[0]); + T[0].push(0,0); + T[1].push(0,1); + T[2].push(2/dx[0],1/dx[0]); + break; + case "string": + b[0] = add(mul(3/(dx[n-2]*dx[n-2]),dy[n-2]),mul(3/(dx[0]*dx[0]),dy[0])); + T[0].push(0,0,0); + T[1].push(n-2,0,1); + T[2].push(1/dx[n-2],2/dx[n-2]+2/dx[0],1/dx[0]); + break; + default: + b[0] = k1; + T[0].push(0); + T[1].push(0); + T[2].push(1); + break; + } + for(i=1;i20) { throw new Error("Numerical gradient fails"); } + x0[i] = x[i]+h; + f1 = f(x0); + x0[i] = x[i]-h; + f2 = f(x0); + x0[i] = x[i]; + if(isNaN(f1) || isNaN(f2)) { h/=16; continue; } + J[i] = (f1-f2)/(2*h); + t0 = x[i]-h; + t1 = x[i]; + t2 = x[i]+h; + d1 = (f1-f0)/h; + d2 = (f0-f2)/h; + N = max(abs(J[i]),abs(f0),abs(f1),abs(f2),abs(t0),abs(t1),abs(t2),1e-8); + errest = min(max(abs(d1-J[i]),abs(d2-J[i]),abs(d1-d2))/N,h/N); + if(errest>eps) { h/=16; } + else break; + } + } + return J; +}; + +numeric.uncmin = function uncmin(f,x0,tol,gradient,maxit,callback,options) { + var grad = numeric.gradient; + if(typeof options === "undefined") { options = {}; } + if(typeof tol === "undefined") { tol = 1e-8; } + if(typeof gradient === "undefined") { gradient = function(x) { return grad(f,x); }; } + if(typeof maxit === "undefined") maxit = 1000; + x0 = numeric.clone(x0); + var n = x0.length; + var f0 = f(x0),f1,df0; + if(isNaN(f0)) throw new Error('uncmin: f(x0) is a NaN!'); + var max = Math.max, norm2 = numeric.norm2; + tol = max(tol,numeric.epsilon); + var step,g0,g1,H1 = options.Hinv || numeric.identity(n); + var dot = numeric.dot, inv = numeric.inv, sub = numeric.sub, add = numeric.add, ten = numeric.tensor, div = numeric.div, mul = numeric.mul; + var all = numeric.all, isfinite = numeric.isFinite, neg = numeric.neg; + var it=0,i,s,x1,y,Hy,Hs,ys,i0,t,nstep,t1,t2; + var msg = ""; + g0 = gradient(x0); + while(it= 0.1*t*df0 || isNaN(f1)) { + t *= 0.5; + ++it; + continue; + } + break; + } + if(t*nstep < tol) { msg = "Line search step size smaller than tol"; break; } + if(it === maxit) { msg = "maxit reached during line search"; break; } + g1 = gradient(x1); + y = sub(g1,g0); + ys = dot(y,s); + Hy = dot(H1,y); + H1 = sub(add(H1, + mul( + (ys+dot(y,Hy))/(ys*ys), + ten(s,s) )), + div(add(ten(Hy,s),ten(s,Hy)),ys)); + x0 = x1; + f0 = f1; + g0 = g1; + ++it; + } + return {solution: x0, f: f0, gradient: g0, invHessian: H1, iterations:it, message: msg}; +}; + +// 10. Ode solver (Dormand-Prince) +numeric.Dopri = function Dopri(x,y,f,ymid,iterations,msg,events) { + this.x = x; + this.y = y; + this.f = f; + this.ymid = ymid; + this.iterations = iterations; + this.events = events; + this.message = msg; +}; +numeric.Dopri.prototype._at = function _at(xi,j) { + function sqr(x) { return x*x; } + var sol = this; + var xs = sol.x; + var ys = sol.y; + var k1 = sol.f; + var ymid = sol.ymid; + var n = xs.length; + var x0,x1,xh,y0,y1,yh,xi; + var floor = Math.floor,h; + var c = 0.5; + var add = numeric.add, mul = numeric.mul,sub = numeric.sub, p,q,w; + x0 = xs[j]; + x1 = xs[j+1]; + y0 = ys[j]; + y1 = ys[j+1]; + h = x1-x0; + xh = x0+c*h; + yh = ymid[j]; + p = sub(k1[j ],mul(y0,1/(x0-xh)+2/(x0-x1))); + q = sub(k1[j+1],mul(y1,1/(x1-xh)+2/(x1-x0))); + w = [sqr(xi - x1) * (xi - xh) / sqr(x0 - x1) / (x0 - xh), + sqr(xi - x0) * sqr(xi - x1) / sqr(x0 - xh) / sqr(x1 - xh), + sqr(xi - x0) * (xi - xh) / sqr(x1 - x0) / (x1 - xh), + (xi - x0) * sqr(xi - x1) * (xi - xh) / sqr(x0-x1) / (x0 - xh), + (xi - x1) * sqr(xi - x0) * (xi - xh) / sqr(x0-x1) / (x1 - xh)]; + return add(add(add(add(mul(y0,w[0]), + mul(yh,w[1])), + mul(y1,w[2])), + mul( p,w[3])), + mul( q,w[4])); +}; +numeric.Dopri.prototype.at = function at(x) { + var i,j,k,floor = Math.floor; + if(typeof x !== "number") { + var n = x.length, ret = Array(n); + for(i=n-1;i!==-1;--i) { + ret[i] = this.at(x[i]); + } + return ret; + } + var x0 = this.x; + i = 0; j = x0.length-1; + while(j-i>1) { + k = floor(0.5*(i+j)); + if(x0[k] <= x) i = k; + else j = k; + } + return this._at(x,i); +}; + +numeric.dopri = function dopri(x0,x1,y0,f,tol,maxit,event) { + if(typeof tol === "undefined") { tol = 1e-6; } + if(typeof maxit === "undefined") { maxit = 1000; } + var xs = [x0], ys = [y0], k1 = [f(x0,y0)], k2,k3,k4,k5,k6,k7, ymid = []; + var A2 = 1/5; + var A3 = [3/40,9/40]; + var A4 = [44/45,-56/15,32/9]; + var A5 = [19372/6561,-25360/2187,64448/6561,-212/729]; + var A6 = [9017/3168,-355/33,46732/5247,49/176,-5103/18656]; + var b = [35/384,0,500/1113,125/192,-2187/6784,11/84]; + var bm = [0.5*6025192743/30085553152, + 0, + 0.5*51252292925/65400821598, + 0.5*-2691868925/45128329728, + 0.5*187940372067/1594534317056, + 0.5*-1776094331/19743644256, + 0.5*11237099/235043384]; + var c = [1/5,3/10,4/5,8/9,1,1]; + var e = [-71/57600,0,71/16695,-71/1920,17253/339200,-22/525,1/40]; + var i = 0,er,j; + var h = (x1-x0)/10; + var it = 0; + var add = numeric.add, mul = numeric.mul, y1,erinf; + var max = Math.max, min = Math.min, abs = Math.abs, norminf = numeric.norminf,pow = Math.pow; + var any = numeric.any, lt = numeric.lt, and = numeric.and, sub = numeric.sub; + var e0, e1, ev; + var ret = new numeric.Dopri(xs,ys,k1,ymid,-1,""); + if(typeof event === "function") e0 = event(x0,y0); + while(x0x1) h = x1-x0; + k2 = f(x0+c[0]*h, add(y0,mul( A2*h,k1[i]))); + k3 = f(x0+c[1]*h, add(add(y0,mul(A3[0]*h,k1[i])),mul(A3[1]*h,k2))); + k4 = f(x0+c[2]*h, add(add(add(y0,mul(A4[0]*h,k1[i])),mul(A4[1]*h,k2)),mul(A4[2]*h,k3))); + k5 = f(x0+c[3]*h, add(add(add(add(y0,mul(A5[0]*h,k1[i])),mul(A5[1]*h,k2)),mul(A5[2]*h,k3)),mul(A5[3]*h,k4))); + k6 = f(x0+c[4]*h,add(add(add(add(add(y0,mul(A6[0]*h,k1[i])),mul(A6[1]*h,k2)),mul(A6[2]*h,k3)),mul(A6[3]*h,k4)),mul(A6[4]*h,k5))); + y1 = add(add(add(add(add(y0,mul(k1[i],h*b[0])),mul(k3,h*b[2])),mul(k4,h*b[3])),mul(k5,h*b[4])),mul(k6,h*b[5])); + k7 = f(x0+h,y1); + er = add(add(add(add(add(mul(k1[i],h*e[0]),mul(k3,h*e[2])),mul(k4,h*e[3])),mul(k5,h*e[4])),mul(k6,h*e[5])),mul(k7,h*e[6])); + if(typeof er === "number") erinf = abs(er); + else erinf = norminf(er); + if(erinf > tol) { // reject + h = 0.2*h*pow(tol/erinf,0.25); + if(x0+h === x0) { + ret.msg = "Step size became too small"; + break; + } + continue; + } + ymid[i] = add(add(add(add(add(add(y0, + mul(k1[i],h*bm[0])), + mul(k3 ,h*bm[2])), + mul(k4 ,h*bm[3])), + mul(k5 ,h*bm[4])), + mul(k6 ,h*bm[5])), + mul(k7 ,h*bm[6])); + ++i; + xs[i] = x0+h; + ys[i] = y1; + k1[i] = k7; + if(typeof event === "function") { + var yi,xl = x0,xr = x0+0.5*h,xi; + e1 = event(xr,ymid[i-1]); + ev = and(lt(e0,0),lt(0,e1)); + if(!any(ev)) { xl = xr; xr = x0+h; e0 = e1; e1 = event(xr,y1); ev = and(lt(e0,0),lt(0,e1)); } + if(any(ev)) { + var xc, yc, en,ei; + var side=0, sl = 1.0, sr = 1.0; + while(1) { + if(typeof e0 === "number") xi = (sr*e1*xl-sl*e0*xr)/(sr*e1-sl*e0); + else { + xi = xr; + for(j=e0.length-1;j!==-1;--j) { + if(e0[j]<0 && e1[j]>0) xi = min(xi,(sr*e1[j]*xl-sl*e0[j]*xr)/(sr*e1[j]-sl*e0[j])); + } + } + if(xi <= xl || xi >= xr) break; + yi = ret._at(xi, i-1); + ei = event(xi,yi); + en = and(lt(e0,0),lt(0,ei)); + if(any(en)) { + xr = xi; + e1 = ei; + ev = en; + sr = 1.0; + if(side === -1) sl *= 0.5; + else sl = 1.0; + side = -1; + } else { + xl = xi; + e0 = ei; + sl = 1.0; + if(side === 1) sr *= 0.5; + else sr = 1.0; + side = 1; + } + } + y1 = ret._at(0.5*(x0+xi),i-1); + ret.f[i] = f(xi,yi); + ret.x[i] = xi; + ret.y[i] = yi; + ret.ymid[i-1] = y1; + ret.events = ev; + ret.iterations = it; + return ret; + } + } + x0 += h; + y0 = y1; + e0 = e1; + h = min(0.8*h*pow(tol/erinf,0.25),4*h); + } + ret.iterations = it; + return ret; +}; + +// 11. Ax = b +numeric.LU = function(A, fast) { + fast = fast || false; + + var abs = Math.abs; + var i, j, k, absAjk, Akk, Ak, Pk, Ai; + var max; + var n = A.length, n1 = n-1; + var P = new Array(n); + if(!fast) A = numeric.clone(A); + + for (k = 0; k < n; ++k) { + Pk = k; + Ak = A[k]; + max = abs(Ak[k]); + for (j = k + 1; j < n; ++j) { + absAjk = abs(A[j][k]); + if (max < absAjk) { + max = absAjk; + Pk = j; + } + } + P[k] = Pk; + + if (Pk != k) { + A[k] = A[Pk]; + A[Pk] = Ak; + Ak = A[k]; + } + + Akk = Ak[k]; + + for (i = k + 1; i < n; ++i) { + A[i][k] /= Akk; + } + + for (i = k + 1; i < n; ++i) { + Ai = A[i]; + for (j = k + 1; j < n1; ++j) { + Ai[j] -= Ai[k] * Ak[j]; + ++j; + Ai[j] -= Ai[k] * Ak[j]; + } + if(j===n1) Ai[j] -= Ai[k] * Ak[j]; + } + } + + return { + LU: A, + P: P + }; +}; + +numeric.LUsolve = function LUsolve(LUP, b) { + var i, j; + var LU = LUP.LU; + var n = LU.length; + var x = numeric.clone(b); + var P = LUP.P; + var Pi, LUi, LUii, tmp; + + for (i=n-1;i!==-1;--i) x[i] = b[i]; + for (i = 0; i < n; ++i) { + Pi = P[i]; + if (P[i] !== i) { + tmp = x[i]; + x[i] = x[Pi]; + x[Pi] = tmp; + } + + LUi = LU[i]; + for (j = 0; j < i; ++j) { + x[i] -= x[j] * LUi[j]; + } + } + + for (i = n - 1; i >= 0; --i) { + LUi = LU[i]; + for (j = i + 1; j < n; ++j) { + x[i] -= x[j] * LUi[j]; + } + + x[i] /= LUi[i]; + } + + return x; +}; + +numeric.solve = function solve(A,b,fast) { return numeric.LUsolve(numeric.LU(A,fast), b); }; + +// 12. Linear programming +numeric.echelonize = function echelonize(A) { + var s = numeric.dim(A), m = s[0], n = s[1]; + var I = numeric.identity(m); + var P = Array(m); + var i,j,k,l,Ai,Ii,Z,a; + var abs = Math.abs; + var diveq = numeric.diveq; + A = numeric.clone(A); + for(i=0;ia1) alpha = a1; + g = add(c,mul(alpha,p)); + H = dot(A1,A0); + for(i=m-1;i!==-1;--i) H[i][i] += 1; + d = solve(H,div(g,alpha),true); + var t0 = div(z,dot(A,d)); + var t = 1.0; + for(i=n-1;i!==-1;--i) if(t0[i]<0) t = min(t,-0.999*t0[i]); + y = sub(x,mul(d,t)); + z = sub(b,dot(A,y)); + if(!all(gt(z,0))) return { solution: x, message: "", iterations: count }; + x = y; + if(alpha=0) unbounded = false; + else unbounded = true; + } + if(unbounded) return { solution: y, message: "Unbounded", iterations: count }; + } + return { solution: x, message: "maximum iteration count exceeded", iterations:count }; +}; + +numeric._solveLP = function _solveLP(c,A,b,tol,maxit) { + var m = c.length, n = b.length,y; + var sum = numeric.sum, log = numeric.log, mul = numeric.mul, sub = numeric.sub, dot = numeric.dot, div = numeric.div, add = numeric.add; + var c0 = numeric.rep([m],0).concat([1]); + var J = numeric.rep([n,1],-1); + var A0 = numeric.blockMatrix([[A , J ]]); + var b0 = b; + var y = numeric.rep([m],0).concat(Math.max(0,numeric.sup(numeric.neg(b)))+1); + var x0 = numeric.__solveLP(c0,A0,b0,tol,maxit,y,false); + var x = numeric.clone(x0.solution); + x.length = m; + var foo = numeric.inf(sub(b,dot(A,x))); + if(foo<0) { return { solution: NaN, message: "Infeasible", iterations: x0.iterations }; } + var ret = numeric.__solveLP(c, A, b, tol, maxit-x0.iterations, x, true); + ret.iterations += x0.iterations; + return ret; +}; + +numeric.solveLP = function solveLP(c,A,b,Aeq,beq,tol,maxit) { + if(typeof maxit === "undefined") maxit = 1000; + if(typeof tol === "undefined") tol = numeric.epsilon; + if(typeof Aeq === "undefined") return numeric._solveLP(c,A,b,tol,maxit); + var m = Aeq.length, n = Aeq[0].length, o = A.length; + var B = numeric.echelonize(Aeq); + var flags = numeric.rep([n],0); + var P = B.P; + var Q = []; + var i; + for(i=P.length-1;i!==-1;--i) flags[P[i]] = 1; + for(i=n-1;i!==-1;--i) if(flags[i]===0) Q.push(i); + var g = numeric.getRange; + var I = numeric.linspace(0,m-1), J = numeric.linspace(0,o-1); + var Aeq2 = g(Aeq,I,Q), A1 = g(A,J,P), A2 = g(A,J,Q), dot = numeric.dot, sub = numeric.sub; + var A3 = dot(A1,B.I); + var A4 = sub(A2,dot(A3,Aeq2)), b4 = sub(b,dot(A3,beq)); + var c1 = Array(P.length), c2 = Array(Q.length); + for(i=P.length-1;i!==-1;--i) c1[i] = c[P[i]]; + for(i=Q.length-1;i!==-1;--i) c2[i] = c[Q[i]]; + var c4 = sub(c2,dot(c1,dot(B.I,Aeq2))); + var S = numeric._solveLP(c4,A4,b4,tol,maxit); + var x2 = S.solution; + if(x2!==x2) return S; + var x1 = dot(B.I,sub(beq,dot(Aeq2,x2))); + var x = Array(c.length); + for(i=P.length-1;i!==-1;--i) x[P[i]] = x1[i]; + for(i=Q.length-1;i!==-1;--i) x[Q[i]] = x2[i]; + return { solution: x, message:S.message, iterations: S.iterations }; +}; + +numeric.MPStoLP = function MPStoLP(MPS) { + if(MPS instanceof String) { MPS.split('\n'); } + var state = 0; + var states = ['Initial state','NAME','ROWS','COLUMNS','RHS','BOUNDS','ENDATA']; + var n = MPS.length; + var i,j,z,N=0,rows = {}, sign = [], rl = 0, vars = {}, nv = 0; + var name; + var c = [], A = [], b = []; + function err(e) { throw new Error('MPStoLP: '+e+'\nLine '+i+': '+MPS[i]+'\nCurrent state: '+states[state]+'\n'); } + for(i=0;i +// +// Math.seedrandom('yipee'); Sets Math.random to a function that is +// initialized using the given explicit seed. +// +// Math.seedrandom(); Sets Math.random to a function that is +// seeded using the current time, dom state, +// and other accumulated local entropy. +// The generated seed string is returned. +// +// Math.seedrandom('yowza', true); +// Seeds using the given explicit seed mixed +// together with accumulated entropy. +// +// +// Seeds using physical random bits downloaded +// from random.org. +// +// Seeds using urandom bits from call.jsonlib.com, +// which is faster than random.org. +// +// Examples: +// +// Math.seedrandom("hello"); // Use "hello" as the seed. +// document.write(Math.random()); // Always 0.5463663768140734 +// document.write(Math.random()); // Always 0.43973793770592234 +// var rng1 = Math.random; // Remember the current prng. +// +// var autoseed = Math.seedrandom(); // New prng with an automatic seed. +// document.write(Math.random()); // Pretty much unpredictable. +// +// Math.random = rng1; // Continue "hello" prng sequence. +// document.write(Math.random()); // Always 0.554769432473455 +// +// Math.seedrandom(autoseed); // Restart at the previous seed. +// document.write(Math.random()); // Repeat the 'unpredictable' value. +// +// Notes: +// +// Each time seedrandom('arg') is called, entropy from the passed seed +// is accumulated in a pool to help generate future seeds for the +// zero-argument form of Math.seedrandom, so entropy can be injected over +// time by calling seedrandom with explicit data repeatedly. +// +// On speed - This javascript implementation of Math.random() is about +// 3-10x slower than the built-in Math.random() because it is not native +// code, but this is typically fast enough anyway. Seeding is more expensive, +// especially if you use auto-seeding. Some details (timings on Chrome 4): +// +// Our Math.random() - avg less than 0.002 milliseconds per call +// seedrandom('explicit') - avg less than 0.5 milliseconds per call +// seedrandom('explicit', true) - avg less than 2 milliseconds per call +// seedrandom() - avg about 38 milliseconds per call +// +// LICENSE (BSD): +// +// Copyright 2010 David Bau, all rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are met: +// +// 1. Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// +// 2. Redistributions in binary form must reproduce the above copyright +// notice, this list of conditions and the following disclaimer in the +// documentation and/or other materials provided with the distribution. +// +// 3. Neither the name of this module nor the names of its contributors may +// be used to endorse or promote products derived from this software +// without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +// +/** + * All code is in an anonymous closure to keep the global namespace clean. + * + * @param {number=} overflow + * @param {number=} startdenom + */ + +// Patched by Seb so that seedrandom.js does not pollute the Math object. +// My tests suggest that doing Math.trouble = 1 makes Math lookups about 5% +// slower. +numeric.seedrandom = { pow:Math.pow, random:Math.random }; + +(function (pool, math, width, chunks, significance, overflow, startdenom) { + + +// +// seedrandom() +// This is the seedrandom function described above. +// +math['seedrandom'] = function seedrandom(seed, use_entropy) { + var key = []; + var arc4; + + // Flatten the seed string or build one from local entropy if needed. + seed = mixkey(flatten( + use_entropy ? [seed, pool] : + arguments.length ? seed : + [new Date().getTime(), pool, window], 3), key); + + // Use the seed to initialize an ARC4 generator. + arc4 = new ARC4(key); + + // Mix the randomness into accumulated entropy. + mixkey(arc4.S, pool); + + // Override Math.random + + // This function returns a random double in [0, 1) that contains + // randomness in every bit of the mantissa of the IEEE 754 value. + + math['random'] = function random() { // Closure to return a random double: + var n = arc4.g(chunks); // Start with a numerator n < 2 ^ 48 + var d = startdenom; // and denominator d = 2 ^ 48. + var x = 0; // and no 'extra last byte'. + while (n < significance) { // Fill up all significant digits by + n = (n + x) * width; // shifting numerator and + d *= width; // denominator and generating a + x = arc4.g(1); // new least-significant-byte. + } + while (n >= overflow) { // To avoid rounding up, before adding + n /= 2; // last byte, shift everything + d /= 2; // right using integer math until + x >>>= 1; // we have exactly the desired bits. + } + return (n + x) / d; // Form the number within [0, 1). + }; + + // Return the seed that was used + return seed; +}; + +// +// ARC4 +// +// An ARC4 implementation. The constructor takes a key in the form of +// an array of at most (width) integers that should be 0 <= x < (width). +// +// The g(count) method returns a pseudorandom integer that concatenates +// the next (count) outputs from ARC4. Its return value is a number x +// that is in the range 0 <= x < (width ^ count). +// +/** @constructor */ +function ARC4(key) { + var t, u, me = this, keylen = key.length; + var i = 0, j = me.i = me.j = me.m = 0; + me.S = []; + me.c = []; + + // The empty key [] is treated as [0]. + if (!keylen) { key = [keylen++]; } + + // Set up S using the standard key scheduling algorithm. + while (i < width) { me.S[i] = i++; } + for (i = 0; i < width; i++) { + t = me.S[i]; + j = lowbits(j + t + key[i % keylen]); + u = me.S[j]; + me.S[i] = u; + me.S[j] = t; + } + + // The "g" method returns the next (count) outputs as one number. + me.g = function getnext(count) { + var s = me.S; + var i = lowbits(me.i + 1); var t = s[i]; + var j = lowbits(me.j + t); var u = s[j]; + s[i] = u; + s[j] = t; + var r = s[lowbits(t + u)]; + while (--count) { + i = lowbits(i + 1); t = s[i]; + j = lowbits(j + t); u = s[j]; + s[i] = u; + s[j] = t; + r = r * width + s[lowbits(t + u)]; + } + me.i = i; + me.j = j; + return r; + }; + // For robust unpredictability discard an initial batch of values. + // See http://www.rsa.com/rsalabs/node.asp?id=2009 + me.g(width); +} + +// +// flatten() +// Converts an object tree to nested arrays of strings. +// +/** @param {Object=} result + * @param {string=} prop + * @param {string=} typ */ +function flatten(obj, depth, result, prop, typ) { + result = []; + typ = typeof(obj); + if (depth && typ == 'object') { + for (prop in obj) { + if (prop.indexOf('S') < 5) { // Avoid FF3 bug (local/sessionStorage) + try { result.push(flatten(obj[prop], depth - 1)); } catch (e) {} + } + } + } + return (result.length ? result : obj + (typ != 'string' ? '\0' : '')); +} + +// +// mixkey() +// Mixes a string seed into a key that is an array of integers, and +// returns a shortened string seed that is equivalent to the result key. +// +/** @param {number=} smear + * @param {number=} j */ +function mixkey(seed, key, smear, j) { + seed += ''; // Ensure the seed is a string + smear = 0; + for (j = 0; j < seed.length; j++) { + key[lowbits(j)] = + lowbits((smear ^= key[lowbits(j)] * 19) + seed.charCodeAt(j)); + } + seed = ''; + for (j in key) { seed += String.fromCharCode(key[j]); } + return seed; +} + +// +// lowbits() +// A quick "n mod width" for width a power of 2. +// +function lowbits(n) { return n & (width - 1); } + +// +// The following constants are related to IEEE 754 limits. +// +startdenom = math.pow(width, chunks); +significance = math.pow(2, significance); +overflow = significance * 2; + +// +// When seedrandom.js is loaded, we immediately mix a few bits +// from the built-in RNG into the entropy pool. Because we do +// not want to intefere with determinstic PRNG state later, +// seedrandom will not call math.random on its own again after +// initialization. +// +mixkey(math.random(), pool); + +// End anonymous scope, and pass initial values. +}( + [], // pool: entropy pool starts empty + numeric.seedrandom, // math: package containing random, pow, and seedrandom + 256, // width: each RC4 output is 0 <= x < 256 + 6, // chunks: at least six RC4 outputs for each double + 52 // significance: there are 52 significant digits in a double + )); +/* This file is a slightly modified version of quadprog.js from Alberto Santini. + * It has been slightly modified by Sébastien Loisel to make sure that it handles + * 0-based Arrays instead of 1-based Arrays. + * License is in resources/LICENSE.quadprog */ +(function(exports) { + +function base0to1(A) { + if(typeof A !== "object") { return A; } + var ret = [], i,n=A.length; + for(i=0;i meq) { + work[l] = sum; + } else { + work[l] = -Math.abs(sum); + if (sum > 0) { + for (j = 1; j <= n; j = j + 1) { + amat[j][i] = -amat[j][i]; + } + bvec[i] = -bvec[i]; + } + } + } + + for (i = 1; i <= nact; i = i + 1) { + work[iwsv + iact[i]] = 0; + } + + nvl = 0; + temp = 0; + for (i = 1; i <= q; i = i + 1) { + if (work[iwsv + i] < temp * work[iwnbv + i]) { + nvl = i; + temp = work[iwsv + i] / work[iwnbv + i]; + } + } + if (nvl === 0) { + return 999; + } + + return 0; + } + + function fn_goto_55() { + for (i = 1; i <= n; i = i + 1) { + sum = 0; + for (j = 1; j <= n; j = j + 1) { + sum = sum + dmat[j][i] * amat[j][nvl]; + } + work[i] = sum; + } + + l1 = iwzv; + for (i = 1; i <= n; i = i + 1) { + work[l1 + i] = 0; + } + for (j = nact + 1; j <= n; j = j + 1) { + for (i = 1; i <= n; i = i + 1) { + work[l1 + i] = work[l1 + i] + dmat[i][j] * work[j]; + } + } + + t1inf = true; + for (i = nact; i >= 1; i = i - 1) { + sum = work[i]; + l = iwrm + (i * (i + 3)) / 2; + l1 = l - i; + for (j = i + 1; j <= nact; j = j + 1) { + sum = sum - work[l] * work[iwrv + j]; + l = l + j; + } + sum = sum / work[l1]; + work[iwrv + i] = sum; + if (iact[i] < meq) { + // continue; + break; + } + if (sum < 0) { + // continue; + break; + } + t1inf = false; + it1 = i; + } + + if (!t1inf) { + t1 = work[iwuv + it1] / work[iwrv + it1]; + for (i = 1; i <= nact; i = i + 1) { + if (iact[i] < meq) { + // continue; + break; + } + if (work[iwrv + i] < 0) { + // continue; + break; + } + temp = work[iwuv + i] / work[iwrv + i]; + if (temp < t1) { + t1 = temp; + it1 = i; + } + } + } + + sum = 0; + for (i = iwzv + 1; i <= iwzv + n; i = i + 1) { + sum = sum + work[i] * work[i]; + } + if (Math.abs(sum) <= vsmall) { + if (t1inf) { + ierr[1] = 1; + // GOTO 999 + return 999; + } else { + for (i = 1; i <= nact; i = i + 1) { + work[iwuv + i] = work[iwuv + i] - t1 * work[iwrv + i]; + } + work[iwuv + nact + 1] = work[iwuv + nact + 1] + t1; + // GOTO 700 + return 700; + } + } else { + sum = 0; + for (i = 1; i <= n; i = i + 1) { + sum = sum + work[iwzv + i] * amat[i][nvl]; + } + tt = -work[iwsv + nvl] / sum; + t2min = true; + if (!t1inf) { + if (t1 < tt) { + tt = t1; + t2min = false; + } + } + + for (i = 1; i <= n; i = i + 1) { + sol[i] = sol[i] + tt * work[iwzv + i]; + if (Math.abs(sol[i]) < vsmall) { + sol[i] = 0; + } + } + + crval[1] = crval[1] + tt * sum * (tt / 2 + work[iwuv + nact + 1]); + for (i = 1; i <= nact; i = i + 1) { + work[iwuv + i] = work[iwuv + i] - tt * work[iwrv + i]; + } + work[iwuv + nact + 1] = work[iwuv + nact + 1] + tt; + + if (t2min) { + nact = nact + 1; + iact[nact] = nvl; + + l = iwrm + ((nact - 1) * nact) / 2 + 1; + for (i = 1; i <= nact - 1; i = i + 1) { + work[l] = work[i]; + l = l + 1; + } + + if (nact === n) { + work[l] = work[n]; + } else { + for (i = n; i >= nact + 1; i = i - 1) { + if (work[i] === 0) { + // continue; + break; + } + gc = Math.max(Math.abs(work[i - 1]), Math.abs(work[i])); + gs = Math.min(Math.abs(work[i - 1]), Math.abs(work[i])); + if (work[i - 1] >= 0) { + temp = Math.abs(gc * Math.sqrt(1 + gs * gs / (gc * gc))); + } else { + temp = -Math.abs(gc * Math.sqrt(1 + gs * gs / (gc * gc))); + } + gc = work[i - 1] / temp; + gs = work[i] / temp; + + if (gc === 1) { + // continue; + break; + } + if (gc === 0) { + work[i - 1] = gs * temp; + for (j = 1; j <= n; j = j + 1) { + temp = dmat[j][i - 1]; + dmat[j][i - 1] = dmat[j][i]; + dmat[j][i] = temp; + } + } else { + work[i - 1] = temp; + nu = gs / (1 + gc); + for (j = 1; j <= n; j = j + 1) { + temp = gc * dmat[j][i - 1] + gs * dmat[j][i]; + dmat[j][i] = nu * (dmat[j][i - 1] + temp) - dmat[j][i]; + dmat[j][i - 1] = temp; + + } + } + } + work[l] = work[nact]; + } + } else { + sum = -bvec[nvl]; + for (j = 1; j <= n; j = j + 1) { + sum = sum + sol[j] * amat[j][nvl]; + } + if (nvl > meq) { + work[iwsv + nvl] = sum; + } else { + work[iwsv + nvl] = -Math.abs(sum); + if (sum > 0) { + for (j = 1; j <= n; j = j + 1) { + amat[j][nvl] = -amat[j][nvl]; + } + bvec[nvl] = -bvec[nvl]; + } + } + // GOTO 700 + return 700; + } + } + + return 0; + } + + function fn_goto_797() { + l = iwrm + (it1 * (it1 + 1)) / 2 + 1; + l1 = l + it1; + if (work[l1] === 0) { + // GOTO 798 + return 798; + } + gc = Math.max(Math.abs(work[l1 - 1]), Math.abs(work[l1])); + gs = Math.min(Math.abs(work[l1 - 1]), Math.abs(work[l1])); + if (work[l1 - 1] >= 0) { + temp = Math.abs(gc * Math.sqrt(1 + gs * gs / (gc * gc))); + } else { + temp = -Math.abs(gc * Math.sqrt(1 + gs * gs / (gc * gc))); + } + gc = work[l1 - 1] / temp; + gs = work[l1] / temp; + + if (gc === 1) { + // GOTO 798 + return 798; + } + if (gc === 0) { + for (i = it1 + 1; i <= nact; i = i + 1) { + temp = work[l1 - 1]; + work[l1 - 1] = work[l1]; + work[l1] = temp; + l1 = l1 + i; + } + for (i = 1; i <= n; i = i + 1) { + temp = dmat[i][it1]; + dmat[i][it1] = dmat[i][it1 + 1]; + dmat[i][it1 + 1] = temp; + } + } else { + nu = gs / (1 + gc); + for (i = it1 + 1; i <= nact; i = i + 1) { + temp = gc * work[l1 - 1] + gs * work[l1]; + work[l1] = nu * (work[l1 - 1] + temp) - work[l1]; + work[l1 - 1] = temp; + l1 = l1 + i; + } + for (i = 1; i <= n; i = i + 1) { + temp = gc * dmat[i][it1] + gs * dmat[i][it1 + 1]; + dmat[i][it1 + 1] = nu * (dmat[i][it1] + temp) - dmat[i][it1 + 1]; + dmat[i][it1] = temp; + } + } + + return 0; + } + + function fn_goto_798() { + l1 = l - it1; + for (i = 1; i <= it1; i = i + 1) { + work[l1] = work[l]; + l = l + 1; + l1 = l1 + 1; + } + + work[iwuv + it1] = work[iwuv + it1 + 1]; + iact[it1] = iact[it1 + 1]; + it1 = it1 + 1; + if (it1 < nact) { + // GOTO 797 + return 797; + } + + return 0; + } + + function fn_goto_799() { + work[iwuv + nact] = work[iwuv + nact + 1]; + work[iwuv + nact + 1] = 0; + iact[nact] = 0; + nact = nact - 1; + iter[2] = iter[2] + 1; + + return 0; + } + + go = 0; + while (true) { + go = fn_goto_50(); + if (go === 999) { + return; + } + while (true) { + go = fn_goto_55(); + if (go === 0) { + break; + } + if (go === 999) { + return; + } + if (go === 700) { + if (it1 === nact) { + fn_goto_799(); + } else { + while (true) { + fn_goto_797(); + go = fn_goto_798(); + if (go !== 797) { + break; + } + } + fn_goto_799(); + } + } + } + } + +} + +function solveQP(Dmat, dvec, Amat, bvec, meq, factorized) { + Dmat = base0to1(Dmat); + dvec = base0to1(dvec); + Amat = base0to1(Amat); + var i, n, q, + nact, r, + crval = [], iact = [], sol = [], work = [], iter = [], + message; + + meq = meq || 0; + factorized = factorized ? base0to1(factorized) : [undefined, 0]; + bvec = bvec ? base0to1(bvec) : []; + + // In Fortran the array index starts from 1 + n = Dmat.length - 1; + q = Amat[1].length - 1; + + if (!bvec) { + for (i = 1; i <= q; i = i + 1) { + bvec[i] = 0; + } + } + for (i = 1; i <= q; i = i + 1) { + iact[i] = 0; + } + nact = 0; + r = Math.min(n, q); + for (i = 1; i <= n; i = i + 1) { + sol[i] = 0; + } + crval[1] = 0; + for (i = 1; i <= (2 * n + (r * (r + 5)) / 2 + 2 * q + 1); i = i + 1) { + work[i] = 0; + } + for (i = 1; i <= 2; i = i + 1) { + iter[i] = 0; + } + + qpgen2(Dmat, dvec, n, n, sol, crval, Amat, + bvec, n, q, meq, iact, nact, iter, work, factorized); + + message = ""; + if (factorized[1] === 1) { + message = "constraints are inconsistent, no solution!"; + } + if (factorized[1] === 2) { + message = "matrix D in quadratic function is not positive definite!"; + } + + return { + solution: base1to0(sol), + value: base1to0(crval), + unconstrained_solution: base1to0(dvec), + iterations: base1to0(iter), + iact: base1to0(iact), + message: message + }; +} +exports.solveQP = solveQP; +}(numeric)); +/* +Shanti Rao sent me this routine by private email. I had to modify it +slightly to work on Arrays instead of using a Matrix object. +It is apparently translated from http://stitchpanorama.sourceforge.net/Python/svd.py +*/ + +numeric.svd= function svd(A) { + var temp; +//Compute the thin SVD from G. H. Golub and C. Reinsch, Numer. Math. 14, 403-420 (1970) + var prec= numeric.epsilon; //Math.pow(2,-52) // assumes double prec + var tolerance= 1.e-64/prec; + var itmax= 50; + var c=0; + var i=0; + var j=0; + var k=0; + var l=0; + + var u= numeric.clone(A); + var m= u.length; + + var n= u[0].length; + + if (m < n) throw "Need more rows than columns" + + var e = new Array(n); + var q = new Array(n); + for (i=0; i b) + return a*Math.sqrt(1.0+(b*b/a/a)) + else if (b == 0.0) + return a + return b*Math.sqrt(1.0+(a*a/b/b)) + } + + //Householder's reduction to bidiagonal form + + var f= 0.0; + var g= 0.0; + var h= 0.0; + var x= 0.0; + var y= 0.0; + var z= 0.0; + var s= 0.0; + + for (i=0; i < n; i++) + { + e[i]= g; + s= 0.0; + l= i+1; + for (j=i; j < m; j++) + s += (u[j][i]*u[j][i]); + if (s <= tolerance) + g= 0.0; + else + { + f= u[i][i]; + g= Math.sqrt(s); + if (f >= 0.0) g= -g; + h= f*g-s; + u[i][i]=f-g; + for (j=l; j < n; j++) + { + s= 0.0; + for (k=i; k < m; k++) + s += u[k][i]*u[k][j]; + f= s/h; + for (k=i; k < m; k++) + u[k][j]+=f*u[k][i]; + } + } + q[i]= g; + s= 0.0; + for (j=l; j < n; j++) + s= s + u[i][j]*u[i][j]; + if (s <= tolerance) + g= 0.0; + else + { + f= u[i][i+1]; + g= Math.sqrt(s); + if (f >= 0.0) g= -g; + h= f*g - s; + u[i][i+1] = f-g; + for (j=l; j < n; j++) e[j]= u[i][j]/h; + for (j=l; j < m; j++) + { + s=0.0; + for (k=l; k < n; k++) + s += (u[j][k]*u[i][k]); + for (k=l; k < n; k++) + u[j][k]+=s*e[k]; + } + } + y= Math.abs(q[i])+Math.abs(e[i]); + if (y>x) + x=y; + } + + // accumulation of right hand gtransformations + for (i=n-1; i != -1; i+= -1) + { + if (g != 0.0) + { + h= g*u[i][i+1]; + for (j=l; j < n; j++) + v[j][i]=u[i][j]/h; + for (j=l; j < n; j++) + { + s=0.0; + for (k=l; k < n; k++) + s += u[i][k]*v[k][j]; + for (k=l; k < n; k++) + v[k][j]+=(s*v[k][i]); + } + } + for (j=l; j < n; j++) + { + v[i][j] = 0; + v[j][i] = 0; + } + v[i][i] = 1; + g= e[i]; + l= i; + } + + // accumulation of left hand transformations + for (i=n-1; i != -1; i+= -1) + { + l= i+1; + g= q[i]; + for (j=l; j < n; j++) + u[i][j] = 0; + if (g != 0.0) + { + h= u[i][i]*g; + for (j=l; j < n; j++) + { + s=0.0; + for (k=l; k < m; k++) s += u[k][i]*u[k][j]; + f= s/h; + for (k=i; k < m; k++) u[k][j]+=f*u[k][i]; + } + for (j=i; j < m; j++) u[j][i] = u[j][i]/g; + } + else + for (j=i; j < m; j++) u[j][i] = 0; + u[i][i] += 1; + } + + // diagonalization of the bidiagonal form + prec= prec*x; + for (k=n-1; k != -1; k+= -1) + { + for (var iteration=0; iteration < itmax; iteration++) + { // test f splitting + var test_convergence = false; + for (l=k; l != -1; l+= -1) + { + if (Math.abs(e[l]) <= prec) + { test_convergence= true; + break + } + if (Math.abs(q[l-1]) <= prec) + break + } + if (!test_convergence) + { // cancellation of e[l] if l>0 + c= 0.0; + s= 1.0; + var l1= l-1; + for (i =l; i= itmax-1) + throw 'Error: no convergence.' + // shift from bottom 2x2 minor + x= q[l]; + y= q[k-1]; + g= e[k-1]; + h= e[k]; + f= ((y-z)*(y+z)+(g-h)*(g+h))/(2.0*h*y); + g= pythag(f,1.0); + if (f < 0.0) + f= ((x-z)*(x+z)+h*(y/(f-g)-h))/x; + else + f= ((x-z)*(x+z)+h*(y/(f+g)-h))/x; + // next QR transformation + c= 1.0; + s= 1.0; + for (i=l+1; i< k+1; i++) + { + g= e[i]; + y= q[i]; + h= s*g; + g= c*g; + z= pythag(f,h); + e[i-1]= z; + c= f/z; + s= h/z; + f= x*c+g*s; + g= -x*s+g*c; + h= y*s; + y= y*c; + for (j=0; j < n; j++) + { + x= v[j][i-1]; + z= v[j][i]; + v[j][i-1] = x*c+z*s; + v[j][i] = -x*s+z*c; + } + z= pythag(f,h); + q[i-1]= z; + c= f/z; + s= h/z; + f= c*g+s*y; + x= -s*g+c*y; + for (j=0; j < m; j++) + { + y= u[j][i-1]; + z= u[j][i]; + u[j][i-1] = y*c+z*s; + u[j][i] = -y*s+z*c; + } + } + e[l]= 0.0; + e[k]= f; + q[k]= x; + } + } + + //vt= transpose(v) + //return (u,q,vt) + for (i=0;i= 0; j--) + { + if (q[j] < q[i]) + { + // writeln(i,'-',j) + c = q[j]; + q[j] = q[i]; + q[i] = c; + for(k=0;k> 2; + // bit reversal + for(var l=0; l<_n; l++) { + m = _bitrev[l]; + if(l < m) { + tmp = re[l]; + re[l] = re[m]; + re[m] = tmp; + tmp = im[l]; + im[l] = im[m]; + im[m] = tmp; + } + } + // butterfly operation + for(var k=1; k<_n; k<<=1) { + h = 0; + d = _n/(k << 1); + for(var j=0; j> 1; + while(k <= j) { + j -= k; + k >>= 1; + } + j += k; + _bitrev[i] = j; + } + } + + // make trigonometric function table + function _makeCosSinTable() { + var n2 = _n >> 1, + n4 = _n >> 2, + n8 = _n >> 3, + n2p4 = n2 + n4, + t = Math.sin(Math.PI/_n), + dc = 2*t*t, + ds = Math.sqrt(dc*(2 - dc)), + c = _cstb[n4] = 1, + s = _cstb[0] = 0; + t = 2*dc; + for(var i=1; i max) { + max = filtered[(y*_w)+x]*prior; + maxpos = [x,y]; + } + if (filtered[(y*_w)+x] < min) { + min = filtered[(y*_w)+x]; + } + } + } + } else { + for (var x = 0;x < _w;x++) { + for (var y = 0;y < _h;y++) { + if (filtered[(y*_w)+x] > max) { + max = filtered[(y*_w)+x]; + maxpos = [x,y]; + } + if (filtered[(y*_w)+x] < min) { + min = filtered[(y*_w)+x]; + } + } + } + } + this.peak_prev = max; + + if (params.drawResponse) { + // draw response + var diff = max-min; + var dc = document.createElement('canvas'); + dc.setAttribute('width', 32); + dc.setAttribute('height', 32); + var dcc = dc.getContext('2d'); + var psci = dcc.createImageData(32, 32); + var pscidata = psci.data; + for (var j = 0;j < 32*32;j++) { + //draw with priors + //var val = filtered[j]*Math.exp(-0.5*(((j%_w - _w/2)*(j%_w -_w/2))+((Math.floor(j/_h)-(_h/2))*(Math.floor(j/_h)-(_h/2))))/128); + var val = filtered[j]; + val = Math.round((val+Math.abs(min))*(255/diff)); + pscidata[j*4] = val; + pscidata[(j*4)+1] = val; + pscidata[(j*4)+2] = val; + pscidata[(j*4)+3] = 255; + } + dcc.putImageData(psci, 0, 0); + responseContext.drawImage(dc, left, top, width, width); + } + + if (calcPSR) { + this.psr_prev = this.psr(filtered); + } + + if (updateFilter) { + if (!updateable) { + console.log("The loaded filter does not support updating. Ignoring parameter 'updateFilter'."); + } else { + if (calcPSR) { + var psr = this.psr_prev; + } else { + var psr = this.psr(filtered); + } + + if (psr > params.psrThreshold) { + // create target + var target = []; + var nux = maxpos[0]; + var nuy = maxpos[1]; + for (var x = 0;x < _w;x++) { + for (var y = 0;y < _h;y++) { + target[(y*_w)+x] = Math.exp(-(((x-nux)*(x-nux))+((y-nuy)*(y-nuy)))/(2*2)); + } + } + + //fft target + target = this.fft(target); + + // create filter + var res_conj = complex_conj(res); + var fuTop = complex_mult(target,res_conj); + var fuBottom = complex_mult(res,res_conj); + + // add up + var eta = params.eta; + for (var i = 0;i < _arrlen;i++) { + _top[0][i] = eta*fuTop[0][i] + (1-eta)*_top[0][i]; + _top[1][i] = eta*fuTop[1][i] + (1-eta)*_top[1][i]; + _bottom[0][i] = eta*fuBottom[0][i] + (1-eta)*_bottom[0][i]; + _bottom[1][i] = eta*fuBottom[1][i] + (1-eta)*_bottom[1][i]; + } + + _filter = complex_div(_top,_bottom); + } + } + } + + /*if (psr < 5) { + maxpos = [_w/2,_h/2]; + }*/ + + maxpos[0] = maxpos[0]*(width/_w); + maxpos[1] = maxpos[1]*(width/_h); + + // check if output is strong enough + // if not, return false? + if (max < 0) { + return false; + } else { + return maxpos; + } + }; + + this.train = function(input, left, top, width, height) { + + if (!updateable) { + console.log("The loaded filter does not support updating. Unable to do training."); + return false; + } + + if (input.tagName == "VIDEO" || input.tagName == "IMG") { + // scale selection according to original source image + var videoLeft = Math.round((left/input.width)*input.videoWidth); + var videoTop = Math.round((top/input.height)*input.videoHeight); + var videoWidth = Math.round((width/input.width)*input.videoWidth); + var videoHeight = Math.round((height/input.height)*input.videoHeight); + _cc.drawImage(input, videoLeft, videoTop, videoWidth, videoHeight, 0, 0, _w, _h); + } else if (input.tagName == "CANVAS") { + _cc.drawImage(input, left, top, width, height, 0, 0, _w, _h); + } + + var image = _cc.getImageData(0,0,_w,_h); + var id = image.data; + + // convert to grayscale + for (var i = 0;i < _arrlen;i++) { + _image_array[i] = id[(4*i)]*0.3; + _image_array[i] += id[(4*i)+1]*0.59; + _image_array[i] += id[(4*i)+2]*0.11; + } + + // preprocess + var prepImage = preprocess(_image_array); + prepImage = cosine_window(prepImage); + + // create target + var target = []; + var nux = _w/2; + var nuy = _h/2; + for (var x = 0;x < _w;x++) { + for (var y = 0;y < _h;y++) { + target[(y*_w)+x] = Math.exp(-(((x-nux)*(x-nux))+((y-nuy)*(y-nuy)))/(2*2)); + } + } + + //fft target + target = this.fft(target); + + // filter + var res = this.fft(prepImage); + // create filter + var res_conj = complex_conj(res); + var fuTop = complex_mult(target,res_conj); + var fuBottom = complex_mult(res,res_conj); + + // add up + var eta = params.eta; + for (var i = 0;i < _arrlen;i++) { + _top[0][i] = eta*fuTop[0][i] + (1-eta)*_top[0][i]; + _top[1][i] = eta*fuTop[1][i] + (1-eta)*_top[1][i]; + _bottom[0][i] = eta*fuBottom[0][i] + (1-eta)*_bottom[0][i]; + _bottom[1][i] = eta*fuBottom[1][i] + (1-eta)*_bottom[1][i]; + } + + _filter = complex_div(_top,_bottom); + + return true; + }; + + var preprocess = function(array) { + // in-place + + // log adjusting + for (var i = 0;i < _arrlen;i++) { + array[i] = Math.log(array[i]+1); + } + + // normalize to mean 0 and norm 1 + var mean = 0; + for (var i = 0;i < _arrlen;i++) { + mean += array[i]; + } + mean /= _arrlen; + + for (var i = 0;i < _arrlen;i++) { + array[i] -= mean; + } + var norm = 0.0; + for (var i = 0;i < _arrlen;i++) { + norm += (array[i]*array[i]); + } + norm = Math.sqrt(norm); + if (norm !== 0) { + for (var i = 0;i < _arrlen;i++) { + array[i] /= norm; + } + } + + return array; + }; + + var cosine_window = function(array) { + // calculate rect cosine window (in-place) + var pos = 0; + for (var i = 0;i < _w;i++) { + for (var j = 0;j < _h;j++) { + //pos = (i%_w)+(j*_w); + var cww = Math.sin((Math.PI*i)/(_w-1)); + var cwh = Math.sin((Math.PI*j)/(_h-1)); + array[pos] = Math.min(cww,cwh)*array[pos]; + pos++; + } + } + + return array; + }; + + var complex_mult = function(cn1, cn2) { + // not in-place + var re_part = new Array(_w); + var im_part = new Array(_w); + var nucn = [re_part, im_part]; + for (var r = 0;r < _arrlen;r++) { + nucn[0][r] = (cn1[0][r]*cn2[0][r]) - (cn1[1][r]*cn2[1][r]); + nucn[1][r] = (cn1[0][r]*cn2[1][r]) + (cn1[1][r]*cn2[0][r]); + } + return nucn; + }; + + var complex_mult_inplace = function(cn1, cn2) { + // in-place + var temp1, temp2; + for (var r = 0;r < _arrlen;r++) { + temp1 = (cn1[0][r]*cn2[0][r]) - (cn1[1][r]*cn2[1][r]); + temp2 = (cn1[0][r]*cn2[1][r]) + (cn1[1][r]*cn2[0][r]); + cn1[0][r] = temp1; + cn1[1][r] = temp2; + } + }; + + var complex_conj = function(cn) { + // not in-place (TODO) + var nucn = [[],[]]; + for (var i = 0;i < _arrlen;i++) { + nucn[0][i] = cn[0][i]; + nucn[1][i] = -cn[1][i]; + } + return nucn; + }; + + var complex_div = function(cn1, cn2) { + // not in-place (TODO) + var nucn = [[],[]]; + for (var r = 0;r < _arrlen;r++) { + nucn[0][r] = ((cn1[0][r]*cn2[0][r])+(cn1[1][r]*cn2[1][r])) / ((cn2[0][r]*cn2[0][r]) + (cn2[1][r]*cn2[1][r])); + nucn[1][r] = ((cn1[1][r]*cn2[0][r])-(cn1[0][r]*cn2[1][r])) / ((cn2[0][r]*cn2[0][r]) + (cn2[1][r]*cn2[1][r])); + } + return nucn; + }; +} + +var mosse = { + mosseFilter : mosseFilter, + filters : { + left_eye_filter : left_eye_filter, + right_eye_filter : right_eye_filter, + mouth_filter : mouth_filter, + nose_filter : nose_filter, + face_filter : face_filter + } +}; + +var jsfeat_1 = createCommonjsModule(function (module) { +/** + * @author Eugene Zatepyakin / http://inspirit.ru/ + */ + +// namespace ? +var jsfeat = jsfeat || { REVISION: 'ALPHA' }; +/** + * @author Eugene Zatepyakin / http://inspirit.ru/ + */ + +(function(global) { + "use strict"; + // + + // CONSTANTS + var EPSILON = 0.0000001192092896; + var FLT_MIN = 1E-37; + + // implementation from CCV project + // currently working only with u8,s32,f32 + var U8_t = 0x0100, + S32_t = 0x0200, + F32_t = 0x0400, + S64_t = 0x0800, + F64_t = 0x1000; + + var C1_t = 0x01, + C2_t = 0x02, + C3_t = 0x03, + C4_t = 0x04; + + var _data_type_size = new Int32Array([ -1, 1, 4, -1, 4, -1, -1, -1, 8, -1, -1, -1, -1, -1, -1, -1, 8 ]); + + var get_data_type = (function () { + return function(type) { + return (type & 0xFF00); + } + })(); + + var get_channel = (function () { + return function(type) { + return (type & 0xFF); + } + })(); + + var get_data_type_size = (function () { + return function(type) { + return _data_type_size[(type & 0xFF00) >> 8]; + } + })(); + + // color conversion + var COLOR_RGBA2GRAY = 0; + var COLOR_RGB2GRAY = 1; + var COLOR_BGRA2GRAY = 2; + var COLOR_BGR2GRAY = 3; + + // box blur option + var BOX_BLUR_NOSCALE = 0x01; + // svd options + var SVD_U_T = 0x01; + var SVD_V_T = 0x02; + + var data_t = (function () { + function data_t(size_in_bytes, buffer) { + // we need align size to multiple of 8 + this.size = ((size_in_bytes + 7) | 0) & -8; + if (typeof buffer === "undefined") { + this.buffer = new ArrayBuffer(this.size); + } else { + this.buffer = buffer; + this.size = buffer.length; + } + this.u8 = new Uint8Array(this.buffer); + this.i32 = new Int32Array(this.buffer); + this.f32 = new Float32Array(this.buffer); + this.f64 = new Float64Array(this.buffer); + } + return data_t; + })(); + + var matrix_t = (function () { + // columns, rows, data_type + function matrix_t(c, r, data_type, data_buffer) { + this.type = get_data_type(data_type)|0; + this.channel = get_channel(data_type)|0; + this.cols = c|0; + this.rows = r|0; + if (typeof data_buffer === "undefined") { + this.allocate(); + } else { + this.buffer = data_buffer; + // data user asked for + this.data = this.type&U8_t ? this.buffer.u8 : (this.type&S32_t ? this.buffer.i32 : (this.type&F32_t ? this.buffer.f32 : this.buffer.f64)); + } + } + matrix_t.prototype.allocate = function() { + // clear references + delete this.data; + delete this.buffer; + // + this.buffer = new data_t((this.cols * get_data_type_size(this.type) * this.channel) * this.rows); + this.data = this.type&U8_t ? this.buffer.u8 : (this.type&S32_t ? this.buffer.i32 : (this.type&F32_t ? this.buffer.f32 : this.buffer.f64)); + }; + matrix_t.prototype.copy_to = function(other) { + var od = other.data, td = this.data; + var i = 0, n = (this.cols*this.rows*this.channel)|0; + for(; i < n-4; i+=4) { + od[i] = td[i]; + od[i+1] = td[i+1]; + od[i+2] = td[i+2]; + od[i+3] = td[i+3]; + } + for(; i < n; ++i) { + od[i] = td[i]; + } + }; + matrix_t.prototype.resize = function(c, r, ch) { + if (typeof ch === "undefined") { ch = this.channel; } + // relocate buffer only if new size doesnt fit + var new_size = (c * get_data_type_size(this.type) * ch) * r; + if(new_size > this.buffer.size) { + this.cols = c; + this.rows = r; + this.channel = ch; + this.allocate(); + } else { + this.cols = c; + this.rows = r; + this.channel = ch; + } + }; + + return matrix_t; + })(); + + var pyramid_t = (function () { + + function pyramid_t(levels) { + this.levels = levels|0; + this.data = new Array(levels); + this.pyrdown = jsfeat.imgproc.pyrdown; + } + + pyramid_t.prototype.allocate = function(start_w, start_h, data_type) { + var i = this.levels; + while(--i >= 0) { + this.data[i] = new matrix_t(start_w >> i, start_h >> i, data_type); + } + }; + + pyramid_t.prototype.build = function(input, skip_first_level) { + if (typeof skip_first_level === "undefined") { skip_first_level = true; } + // just copy data to first level + var i = 2, a = input, b = this.data[0]; + if(!skip_first_level) { + var j=input.cols*input.rows; + while(--j >= 0) { + b.data[j] = input.data[j]; + } + } + b = this.data[1]; + this.pyrdown(a, b); + for(; i < this.levels; ++i) { + a = b; + b = this.data[i]; + this.pyrdown(a, b); + } + }; + + return pyramid_t; + })(); + + var keypoint_t = (function () { + function keypoint_t(x,y,score,level,angle) { + if (typeof x === "undefined") { x=0; } + if (typeof y === "undefined") { y=0; } + if (typeof score === "undefined") { score=0; } + if (typeof level === "undefined") { level=0; } + if (typeof angle === "undefined") { angle=-1.0; } + + this.x = x; + this.y = y; + this.score = score; + this.level = level; + this.angle = angle; + } + return keypoint_t; + })(); + + + // data types + global.U8_t = U8_t; + global.S32_t = S32_t; + global.F32_t = F32_t; + global.S64_t = S64_t; + global.F64_t = F64_t; + // data channels + global.C1_t = C1_t; + global.C2_t = C2_t; + global.C3_t = C3_t; + global.C4_t = C4_t; + + // popular formats + global.U8C1_t = U8_t | C1_t; + global.U8C3_t = U8_t | C3_t; + global.U8C4_t = U8_t | C4_t; + + global.F32C1_t = F32_t | C1_t; + global.F32C2_t = F32_t | C2_t; + global.S32C1_t = S32_t | C1_t; + global.S32C2_t = S32_t | C2_t; + + // constants + global.EPSILON = EPSILON; + global.FLT_MIN = FLT_MIN; + + // color convert + global.COLOR_RGBA2GRAY = COLOR_RGBA2GRAY; + global.COLOR_RGB2GRAY = COLOR_RGB2GRAY; + global.COLOR_BGRA2GRAY = COLOR_BGRA2GRAY; + global.COLOR_BGR2GRAY = COLOR_BGR2GRAY; + + // options + global.BOX_BLUR_NOSCALE = BOX_BLUR_NOSCALE; + global.SVD_U_T = SVD_U_T; + global.SVD_V_T = SVD_V_T; + + global.get_data_type = get_data_type; + global.get_channel = get_channel; + global.get_data_type_size = get_data_type_size; + + global.data_t = data_t; + global.matrix_t = matrix_t; + global.pyramid_t = pyramid_t; + global.keypoint_t = keypoint_t; + +})(jsfeat); +/** + * @author Eugene Zatepyakin / http://inspirit.ru/ + */ + +(function(global) { + "use strict"; + // + + var cache = (function() { + + // very primitive array cache, still need testing if it helps + // of course V8 has its own powerful cache sys but i'm not sure + // it caches several multichannel 640x480 buffer creations each frame + + var _pool_node_t = (function () { + function _pool_node_t(size_in_bytes) { + this.next = null; + this.data = new jsfeat.data_t(size_in_bytes); + this.size = this.data.size; + this.buffer = this.data.buffer; + this.u8 = this.data.u8; + this.i32 = this.data.i32; + this.f32 = this.data.f32; + this.f64 = this.data.f64; + } + _pool_node_t.prototype.resize = function(size_in_bytes) { + delete this.data; + this.data = new jsfeat.data_t(size_in_bytes); + this.size = this.data.size; + this.buffer = this.data.buffer; + this.u8 = this.data.u8; + this.i32 = this.data.i32; + this.f32 = this.data.f32; + this.f64 = this.data.f64; + }; + return _pool_node_t; + })(); + + var _pool_head, _pool_tail; + var _pool_size = 0; + + return { + + allocate: function(capacity, data_size) { + _pool_head = _pool_tail = new _pool_node_t(data_size); + for (var i = 0; i < capacity; ++i) { + var node = new _pool_node_t(data_size); + _pool_tail = _pool_tail.next = node; + + _pool_size++; + } + }, + + get_buffer: function(size_in_bytes) { + // assume we have enough free nodes + var node = _pool_head; + _pool_head = _pool_head.next; + _pool_size--; + + if(size_in_bytes > node.size) { + node.resize(size_in_bytes); + } + + return node; + }, + + put_buffer: function(node) { + _pool_tail = _pool_tail.next = node; + _pool_size++; + } + }; + })(); + + global.cache = cache; + // for now we dont need more than 30 buffers + // if having cache sys really helps we can add auto extending sys + cache.allocate(30, 640*4); + +})(jsfeat); +/** + * @author Eugene Zatepyakin / http://inspirit.ru/ + */ + +(function(global) { + "use strict"; + // + + var math = (function() { + + var qsort_stack = new Int32Array(48*2); + + return { + get_gaussian_kernel: function(size, sigma, kernel, data_type) { + var i=0,x=0.0,t=0.0,sigma_x=0.0,scale_2x=0.0; + var sum = 0.0; + var kern_node = jsfeat.cache.get_buffer(size<<2); + var _kernel = kern_node.f32;//new Float32Array(size); + + if((size&1) == 1 && size <= 7 && sigma <= 0) { + switch(size>>1) { + case 0: + _kernel[0] = 1.0; + sum = 1.0; + break; + case 1: + _kernel[0] = 0.25, _kernel[1] = 0.5, _kernel[2] = 0.25; + sum = 0.25+0.5+0.25; + break; + case 2: + _kernel[0] = 0.0625, _kernel[1] = 0.25, _kernel[2] = 0.375, + _kernel[3] = 0.25, _kernel[4] = 0.0625; + sum = 0.0625+0.25+0.375+0.25+0.0625; + break; + case 3: + _kernel[0] = 0.03125, _kernel[1] = 0.109375, _kernel[2] = 0.21875, + _kernel[3] = 0.28125, _kernel[4] = 0.21875, _kernel[5] = 0.109375, _kernel[6] = 0.03125; + sum = 0.03125+0.109375+0.21875+0.28125+0.21875+0.109375+0.03125; + break; + } + } else { + sigma_x = sigma > 0 ? sigma : ((size-1)*0.5 - 1.0)*0.3 + 0.8; + scale_2x = -0.5/(sigma_x*sigma_x); + + for( ; i < size; ++i ) + { + x = i - (size-1)*0.5; + t = Math.exp(scale_2x*x*x); + + _kernel[i] = t; + sum += t; + } + } + + if(data_type & jsfeat.U8_t) { + // int based kernel + sum = 256.0/sum; + for (i = 0; i < size; ++i) { + kernel[i] = (_kernel[i] * sum + 0.5)|0; + } + } else { + // classic kernel + sum = 1.0/sum; + for (i = 0; i < size; ++i) { + kernel[i] = _kernel[i] * sum; + } + } + + jsfeat.cache.put_buffer(kern_node); + }, + + // model is 3x3 matrix_t + perspective_4point_transform: function(model, src_x0, src_y0, dst_x0, dst_y0, + src_x1, src_y1, dst_x1, dst_y1, + src_x2, src_y2, dst_x2, dst_y2, + src_x3, src_y3, dst_x3, dst_y3) { + var t1 = src_x0; + var t2 = src_x2; + var t4 = src_y1; + var t5 = t1 * t2 * t4; + var t6 = src_y3; + var t7 = t1 * t6; + var t8 = t2 * t7; + var t9 = src_y2; + var t10 = t1 * t9; + var t11 = src_x1; + var t14 = src_y0; + var t15 = src_x3; + var t16 = t14 * t15; + var t18 = t16 * t11; + var t20 = t15 * t11 * t9; + var t21 = t15 * t4; + var t24 = t15 * t9; + var t25 = t2 * t4; + var t26 = t6 * t2; + var t27 = t6 * t11; + var t28 = t9 * t11; + var t30 = 1.0 / (t21-t24 - t25 + t26 - t27 + t28); + var t32 = t1 * t15; + var t35 = t14 * t11; + var t41 = t4 * t1; + var t42 = t6 * t41; + var t43 = t14 * t2; + var t46 = t16 * t9; + var t48 = t14 * t9 * t11; + var t51 = t4 * t6 * t2; + var t55 = t6 * t14; + var Hr0 = -(t8-t5 + t10 * t11 - t11 * t7 - t16 * t2 + t18 - t20 + t21 * t2) * t30; + var Hr1 = (t5 - t8 - t32 * t4 + t32 * t9 + t18 - t2 * t35 + t27 * t2 - t20) * t30; + var Hr2 = t1; + var Hr3 = (-t9 * t7 + t42 + t43 * t4 - t16 * t4 + t46 - t48 + t27 * t9 - t51) * t30; + var Hr4 = (-t42 + t41 * t9 - t55 * t2 + t46 - t48 + t55 * t11 + t51 - t21 * t9) * t30; + var Hr5 = t14; + var Hr6 = (-t10 + t41 + t43 - t35 + t24 - t21 - t26 + t27) * t30; + var Hr7 = (-t7 + t10 + t16 - t43 + t27 - t28 - t21 + t25) * t30; + + t1 = dst_x0; + t2 = dst_x2; + t4 = dst_y1; + t5 = t1 * t2 * t4; + t6 = dst_y3; + t7 = t1 * t6; + t8 = t2 * t7; + t9 = dst_y2; + t10 = t1 * t9; + t11 = dst_x1; + t14 = dst_y0; + t15 = dst_x3; + t16 = t14 * t15; + t18 = t16 * t11; + t20 = t15 * t11 * t9; + t21 = t15 * t4; + t24 = t15 * t9; + t25 = t2 * t4; + t26 = t6 * t2; + t27 = t6 * t11; + t28 = t9 * t11; + t30 = 1.0 / (t21-t24 - t25 + t26 - t27 + t28); + t32 = t1 * t15; + t35 = t14 * t11; + t41 = t4 * t1; + t42 = t6 * t41; + t43 = t14 * t2; + t46 = t16 * t9; + t48 = t14 * t9 * t11; + t51 = t4 * t6 * t2; + t55 = t6 * t14; + var Hl0 = -(t8-t5 + t10 * t11 - t11 * t7 - t16 * t2 + t18 - t20 + t21 * t2) * t30; + var Hl1 = (t5 - t8 - t32 * t4 + t32 * t9 + t18 - t2 * t35 + t27 * t2 - t20) * t30; + var Hl2 = t1; + var Hl3 = (-t9 * t7 + t42 + t43 * t4 - t16 * t4 + t46 - t48 + t27 * t9 - t51) * t30; + var Hl4 = (-t42 + t41 * t9 - t55 * t2 + t46 - t48 + t55 * t11 + t51 - t21 * t9) * t30; + var Hl5 = t14; + var Hl6 = (-t10 + t41 + t43 - t35 + t24 - t21 - t26 + t27) * t30; + var Hl7 = (-t7 + t10 + t16 - t43 + t27 - t28 - t21 + t25) * t30; + + // the following code computes R = Hl * inverse Hr + t2 = Hr4-Hr7*Hr5; + t4 = Hr0*Hr4; + t5 = Hr0*Hr5; + t7 = Hr3*Hr1; + t8 = Hr2*Hr3; + t10 = Hr1*Hr6; + var t12 = Hr2*Hr6; + t15 = 1.0 / (t4-t5*Hr7-t7+t8*Hr7+t10*Hr5-t12*Hr4); + t18 = -Hr3+Hr5*Hr6; + var t23 = -Hr3*Hr7+Hr4*Hr6; + t28 = -Hr1+Hr2*Hr7; + var t31 = Hr0-t12; + t35 = Hr0*Hr7-t10; + t41 = -Hr1*Hr5+Hr2*Hr4; + var t44 = t5-t8; + var t47 = t4-t7; + t48 = t2*t15; + var t49 = t28*t15; + var t50 = t41*t15; + var mat = model.data; + mat[0] = Hl0*t48+Hl1*(t18*t15)-Hl2*(t23*t15); + mat[1] = Hl0*t49+Hl1*(t31*t15)-Hl2*(t35*t15); + mat[2] = -Hl0*t50-Hl1*(t44*t15)+Hl2*(t47*t15); + mat[3] = Hl3*t48+Hl4*(t18*t15)-Hl5*(t23*t15); + mat[4] = Hl3*t49+Hl4*(t31*t15)-Hl5*(t35*t15); + mat[5] = -Hl3*t50-Hl4*(t44*t15)+Hl5*(t47*t15); + mat[6] = Hl6*t48+Hl7*(t18*t15)-t23*t15; + mat[7] = Hl6*t49+Hl7*(t31*t15)-t35*t15; + mat[8] = -Hl6*t50-Hl7*(t44*t15)+t47*t15; + }, + + // The current implementation was derived from *BSD system qsort(): + // Copyright (c) 1992, 1993 + // The Regents of the University of California. All rights reserved. + qsort: function(array, low, high, cmp) { + var isort_thresh = 7; + var t,ta,tb,tc; + var sp = 0,left=0,right=0,i=0,n=0,m=0,ptr=0,ptr2=0,d=0; + var left0=0,left1=0,right0=0,right1=0,pivot=0,a=0,b=0,c=0,swap_cnt=0; + + var stack = qsort_stack; + + if( (high-low+1) <= 1 ) return; + + stack[0] = low; + stack[1] = high; + + while( sp >= 0 ) { + + left = stack[sp<<1]; + right = stack[(sp<<1)+1]; + sp--; + + for(;;) { + n = (right - left) + 1; + + if( n <= isort_thresh ) { + //insert_sort: + for( ptr = left + 1; ptr <= right; ptr++ ) { + for( ptr2 = ptr; ptr2 > left && cmp(array[ptr2],array[ptr2-1]); ptr2--) { + t = array[ptr2]; + array[ptr2] = array[ptr2-1]; + array[ptr2-1] = t; + } + } + break; + } else { + swap_cnt = 0; + + left0 = left; + right0 = right; + pivot = left + (n>>1); + + if( n > 40 ) { + d = n >> 3; + a = left, b = left + d, c = left + (d<<1); + ta = array[a],tb = array[b],tc = array[c]; + left = cmp(ta, tb) ? (cmp(tb, tc) ? b : (cmp(ta, tc) ? c : a)) + : (cmp(tc, tb) ? b : (cmp(ta, tc) ? a : c)); + + a = pivot - d, b = pivot, c = pivot + d; + ta = array[a],tb = array[b],tc = array[c]; + pivot = cmp(ta, tb) ? (cmp(tb, tc) ? b : (cmp(ta, tc) ? c : a)) + : (cmp(tc, tb) ? b : (cmp(ta, tc) ? a : c)); + + a = right - (d<<1), b = right - d, c = right; + ta = array[a],tb = array[b],tc = array[c]; + right = cmp(ta, tb) ? (cmp(tb, tc) ? b : (cmp(ta, tc) ? c : a)) + : (cmp(tc, tb) ? b : (cmp(ta, tc) ? a : c)); + } + + a = left, b = pivot, c = right; + ta = array[a],tb = array[b],tc = array[c]; + pivot = cmp(ta, tb) ? (cmp(tb, tc) ? b : (cmp(ta, tc) ? c : a)) + : (cmp(tc, tb) ? b : (cmp(ta, tc) ? a : c)); + if( pivot != left0 ) { + t = array[pivot]; + array[pivot] = array[left0]; + array[left0] = t; + pivot = left0; + } + left = left1 = left0 + 1; + right = right1 = right0; + + ta = array[pivot]; + for(;;) { + while( left <= right && !cmp(ta, array[left]) ) { + if( !cmp(array[left], ta) ) { + if( left > left1 ) { + t = array[left1]; + array[left1] = array[left]; + array[left] = t; + } + swap_cnt = 1; + left1++; + } + left++; + } + + while( left <= right && !cmp(array[right], ta) ) { + if( !cmp(ta, array[right]) ) { + if( right < right1 ) { + t = array[right1]; + array[right1] = array[right]; + array[right] = t; + } + swap_cnt = 1; + right1--; + } + right--; + } + + if( left > right ) break; + + t = array[left]; + array[left] = array[right]; + array[right] = t; + swap_cnt = 1; + left++; + right--; + } + + if( swap_cnt == 0 ) { + left = left0, right = right0; + //goto insert_sort; + for( ptr = left + 1; ptr <= right; ptr++ ) { + for( ptr2 = ptr; ptr2 > left && cmp(array[ptr2],array[ptr2-1]); ptr2--) { + t = array[ptr2]; + array[ptr2] = array[ptr2-1]; + array[ptr2-1] = t; + } + } + break; + } + + n = Math.min( (left1 - left0), (left - left1) ); + m = (left-n)|0; + for( i = 0; i < n; ++i,++m ) { + t = array[left0+i]; + array[left0+i] = array[m]; + array[m] = t; + } + + n = Math.min( (right0 - right1), (right1 - right) ); + m = (right0-n+1)|0; + for( i = 0; i < n; ++i,++m ) { + t = array[left+i]; + array[left+i] = array[m]; + array[m] = t; + } + n = (left - left1); + m = (right1 - right); + if( n > 1 ) { + if( m > 1 ) { + if( n > m ) { + ++sp; + stack[sp<<1] = left0; + stack[(sp<<1)+1] = left0 + n - 1; + left = right0 - m + 1, right = right0; + } else { + ++sp; + stack[sp<<1] = right0 - m + 1; + stack[(sp<<1)+1] = right0; + left = left0, right = left0 + n - 1; + } + } else { + left = left0, right = left0 + n - 1; + } + } + else if( m > 1 ) + left = right0 - m + 1, right = right0; + else + break; + } + } + } + }, + + median: function(array, low, high) { + var w; + var middle=0,ll=0,hh=0,median=(low+high)>>1; + for (;;) { + if (high <= low) return array[median]; + if (high == (low + 1)) { + if (array[low] > array[high]) { + w = array[low]; + array[low] = array[high]; + array[high] = w; + } + return array[median]; + } + middle = ((low + high) >> 1); + if (array[middle] > array[high]) { + w = array[middle]; + array[middle] = array[high]; + array[high] = w; + } + if (array[low] > array[high]) { + w = array[low]; + array[low] = array[high]; + array[high] = w; + } + if (array[middle] > array[low]) { + w = array[middle]; + array[middle] = array[low]; + array[low] = w; + } + ll = (low + 1); + w = array[middle]; + array[middle] = array[ll]; + array[ll] = w; + hh = high; + for (;;) { + do ++ll; while (array[low] > array[ll]); + do --hh; while (array[hh] > array[low]); + if (hh < ll) break; + w = array[ll]; + array[ll] = array[hh]; + array[hh] = w; + } + w = array[low]; + array[low] = array[hh]; + array[hh] = w; + if (hh <= median) + low = ll; + else if (hh >= median) + high = (hh - 1); + } + return 0; + } + }; + + })(); + + global.math = math; + +})(jsfeat); +/** + * @author Eugene Zatepyakin / http://inspirit.ru/ + * + */ + +(function(global) { + "use strict"; + // + + var matmath = (function() { + + return { + identity: function(M, value) { + if (typeof value === "undefined") { value=1; } + var src=M.data; + var rows=M.rows, cols=M.cols, cols_1=(cols+1)|0; + var len = rows * cols; + var k = len; + while(--len >= 0) src[len] = 0.0; + len = k; + k = 0; + while(k < len) { + src[k] = value; + k = k + cols_1; + } + }, + + transpose: function(At, A) { + var i=0,j=0,nrows=A.rows,ncols=A.cols; + var Ai=0,Ati=0,pAt=0; + var ad=A.data,atd=At.data; + + for (; i < nrows; Ati += 1, Ai += ncols, i++) { + pAt = Ati; + for (j = 0; j < ncols; pAt += nrows, j++) atd[pAt] = ad[Ai+j]; + } + }, + + // C = A * B + multiply: function(C, A, B) { + var i=0,j=0,k=0; + var Ap=0,pA=0,pB=0,p_B=0,Cp=0; + var ncols=A.cols,nrows=A.rows,mcols=B.cols; + var ad=A.data,bd=B.data,cd=C.data; + var sum=0.0; + + for (; i < nrows; Ap += ncols, i++) { + for (p_B = 0, j = 0; j < mcols; Cp++, p_B++, j++) { + pB = p_B; + pA = Ap; + sum = 0.0; + for (k = 0; k < ncols; pA++, pB += mcols, k++) { + sum += ad[pA] * bd[pB]; + } + cd[Cp] = sum; + } + } + }, + + // C = A * B' + multiply_ABt: function(C, A, B) { + var i=0,j=0,k=0; + var Ap=0,pA=0,pB=0,Cp=0; + var ncols=A.cols,nrows=A.rows,mrows=B.rows; + var ad=A.data,bd=B.data,cd=C.data; + var sum=0.0; + + for (; i < nrows; Ap += ncols, i++) { + for (pB = 0, j = 0; j < mrows; Cp++, j++) { + pA = Ap; + sum = 0.0; + for (k = 0; k < ncols; pA++, pB++, k++) { + sum += ad[pA] * bd[pB]; + } + cd[Cp] = sum; + } + } + }, + + // C = A' * B + multiply_AtB: function(C, A, B) { + var i=0,j=0,k=0; + var Ap=0,pA=0,pB=0,p_B=0,Cp=0; + var ncols=A.cols,nrows=A.rows,mcols=B.cols; + var ad=A.data,bd=B.data,cd=C.data; + var sum=0.0; + + for (; i < ncols; Ap++, i++) { + for (p_B = 0, j = 0; j < mcols; Cp++, p_B++, j++) { + pB = p_B; + pA = Ap; + sum = 0.0; + for (k = 0; k < nrows; pA += ncols, pB += mcols, k++) { + sum += ad[pA] * bd[pB]; + } + cd[Cp] = sum; + } + } + }, + + // C = A * A' + multiply_AAt: function(C, A) { + var i=0,j=0,k=0; + var pCdiag=0,p_A=0,pA=0,pB=0,pC=0,pCt=0; + var ncols=A.cols,nrows=A.rows; + var ad=A.data,cd=C.data; + var sum=0.0; + + for (; i < nrows; pCdiag += nrows + 1, p_A = pA, i++) { + pC = pCdiag; + pCt = pCdiag; + pB = p_A; + for (j = i; j < nrows; pC++, pCt += nrows, j++) { + pA = p_A; + sum = 0.0; + for (k = 0; k < ncols; k++) { + sum += ad[pA++] * ad[pB++]; + } + cd[pC] = sum; + cd[pCt] = sum; + } + } + }, + + // C = A' * A + multiply_AtA: function(C, A) { + var i=0,j=0,k=0; + var p_A=0,pA=0,pB=0,p_C=0,pC=0,p_CC=0; + var ncols=A.cols,nrows=A.rows; + var ad=A.data,cd=C.data; + var sum=0.0; + + for (; i < ncols; p_C += ncols, i++) { + p_A = i; + p_CC = p_C + i; + pC = p_CC; + for (j = i; j < ncols; pC++, p_CC += ncols, j++) { + pA = p_A; + pB = j; + sum = 0.0; + for (k = 0; k < nrows; pA += ncols, pB += ncols, k++) { + sum += ad[pA] * ad[pB]; + } + cd[pC] = sum; + cd[p_CC] = sum; + } + } + }, + + // various small matrix operations + identity_3x3: function(M, value) { + if (typeof value === "undefined") { value=1; } + var dt=M.data; + dt[0] = dt[4] = dt[8] = value; + dt[1] = dt[2] = dt[3] = 0; + dt[5] = dt[6] = dt[7] = 0; + }, + + invert_3x3: function(from, to) { + var A = from.data, invA = to.data; + var t1 = A[4]; + var t2 = A[8]; + var t4 = A[5]; + var t5 = A[7]; + var t8 = A[0]; + + var t9 = t8*t1; + var t11 = t8*t4; + var t13 = A[3]; + var t14 = A[1]; + var t15 = t13*t14; + var t17 = A[2]; + var t18 = t13*t17; + var t20 = A[6]; + var t21 = t20*t14; + var t23 = t20*t17; + var t26 = 1.0/(t9*t2-t11*t5-t15*t2+t18*t5+t21*t4-t23*t1); + invA[0] = (t1*t2-t4*t5)*t26; + invA[1] = -(t14*t2-t17*t5)*t26; + invA[2] = -(-t14*t4+t17*t1)*t26; + invA[3] = -(t13*t2-t4*t20)*t26; + invA[4] = (t8*t2-t23)*t26; + invA[5] = -(t11-t18)*t26; + invA[6] = -(-t13*t5+t1*t20)*t26; + invA[7] = -(t8*t5-t21)*t26; + invA[8] = (t9-t15)*t26; + }, + // C = A * B + multiply_3x3: function(C, A, B) { + var Cd=C.data, Ad=A.data, Bd=B.data; + var m1_0 = Ad[0], m1_1 = Ad[1], m1_2 = Ad[2]; + var m1_3 = Ad[3], m1_4 = Ad[4], m1_5 = Ad[5]; + var m1_6 = Ad[6], m1_7 = Ad[7], m1_8 = Ad[8]; + + var m2_0 = Bd[0], m2_1 = Bd[1], m2_2 = Bd[2]; + var m2_3 = Bd[3], m2_4 = Bd[4], m2_5 = Bd[5]; + var m2_6 = Bd[6], m2_7 = Bd[7], m2_8 = Bd[8]; + + Cd[0] = m1_0 * m2_0 + m1_1 * m2_3 + m1_2 * m2_6; + Cd[1] = m1_0 * m2_1 + m1_1 * m2_4 + m1_2 * m2_7; + Cd[2] = m1_0 * m2_2 + m1_1 * m2_5 + m1_2 * m2_8; + Cd[3] = m1_3 * m2_0 + m1_4 * m2_3 + m1_5 * m2_6; + Cd[4] = m1_3 * m2_1 + m1_4 * m2_4 + m1_5 * m2_7; + Cd[5] = m1_3 * m2_2 + m1_4 * m2_5 + m1_5 * m2_8; + Cd[6] = m1_6 * m2_0 + m1_7 * m2_3 + m1_8 * m2_6; + Cd[7] = m1_6 * m2_1 + m1_7 * m2_4 + m1_8 * m2_7; + Cd[8] = m1_6 * m2_2 + m1_7 * m2_5 + m1_8 * m2_8; + }, + + mat3x3_determinant: function(M) { + var md=M.data; + return md[0] * md[4] * md[8] - + md[0] * md[5] * md[7] - + md[3] * md[1] * md[8] + + md[3] * md[2] * md[7] + + md[6] * md[1] * md[5] - + md[6] * md[2] * md[4]; + }, + + determinant_3x3: function(M11, M12, M13, + M21, M22, M23, + M31, M32, M33) { + return M11 * M22 * M33 - M11 * M23 * M32 - + M21 * M12 * M33 + M21 * M13 * M32 + + M31 * M12 * M23 - M31 * M13 * M22; + } + }; + + })(); + + global.matmath = matmath; + +})(jsfeat); +/** + * @author Eugene Zatepyakin / http://inspirit.ru/ + * + */ + +(function(global) { + "use strict"; + // + + var linalg = (function() { + + var swap = function(A, i0, i1, t) { + t = A[i0]; + A[i0] = A[i1]; + A[i1] = t; + }; + + var hypot = function(a, b) { + a = Math.abs(a); + b = Math.abs(b); + if( a > b ) { + b /= a; + return a*Math.sqrt(1.0 + b*b); + } + if( b > 0 ) { + a /= b; + return b*Math.sqrt(1.0 + a*a); + } + return 0.0; + }; + + var JacobiImpl = function(A, astep, W, V, vstep, n) { + var eps = jsfeat.EPSILON; + var i=0,j=0,k=0,m=0,l=0,idx=0,_in=0,_in2=0; + var iters=0,max_iter=n*n*30; + var mv=0.0,val=0.0,p=0.0,y=0.0,t=0.0,s=0.0,c=0.0,a0=0.0,b0=0.0; + + var indR_buff = jsfeat.cache.get_buffer(n<<2); + var indC_buff = jsfeat.cache.get_buffer(n<<2); + var indR = indR_buff.i32; + var indC = indC_buff.i32; + + if(V) { + for(; i < n; i++) { + k = i*vstep; + for(j = 0; j < n; j++) { + V[k + j] = 0.0; + } + V[k + i] = 1.0; + } + } + + for(k = 0; k < n; k++) { + W[k] = A[(astep + 1)*k]; + if(k < n - 1) { + for(m = k+1, mv = Math.abs(A[astep*k + m]), i = k+2; i < n; i++) { + val = Math.abs(A[astep*k+i]); + if(mv < val) + mv = val, m = i; + } + indR[k] = m; + } + if(k > 0) { + for(m = 0, mv = Math.abs(A[k]), i = 1; i < k; i++) { + val = Math.abs(A[astep*i+k]); + if(mv < val) + mv = val, m = i; + } + indC[k] = m; + } + } + + if(n > 1) for( ; iters < max_iter; iters++) { + // find index (k,l) of pivot p + for(k = 0, mv = Math.abs(A[indR[0]]), i = 1; i < n-1; i++) { + val = Math.abs(A[astep*i + indR[i]]); + if( mv < val ) + mv = val, k = i; + } + l = indR[k]; + for(i = 1; i < n; i++) { + val = Math.abs(A[astep*indC[i] + i]); + if( mv < val ) + mv = val, k = indC[i], l = i; + } + + p = A[astep*k + l]; + + if(Math.abs(p) <= eps) break; + + y = (W[l] - W[k])*0.5; + t = Math.abs(y) + hypot(p, y); + s = hypot(p, t); + c = t/s; + s = p/s; t = (p/t)*p; + if(y < 0) + s = -s, t = -t; + A[astep*k + l] = 0; + + W[k] -= t; + W[l] += t; + + // rotate rows and columns k and l + for (i = 0; i < k; i++) { + _in = (astep * i + k); + _in2 = (astep * i + l); + a0 = A[_in]; + b0 = A[_in2]; + A[_in] = a0 * c - b0 * s; + A[_in2] = a0 * s + b0 * c; + } + for (i = (k + 1); i < l; i++) { + _in = (astep * k + i); + _in2 = (astep * i + l); + a0 = A[_in]; + b0 = A[_in2]; + A[_in] = a0 * c - b0 * s; + A[_in2] = a0 * s + b0 * c; + } + i = l + 1; + _in = (astep * k + i); + _in2 = (astep * l + i); + for (; i < n; i++, _in++, _in2++) { + a0 = A[_in]; + b0 = A[_in2]; + A[_in] = a0 * c - b0 * s; + A[_in2] = a0 * s + b0 * c; + } + + // rotate eigenvectors + if (V) { + _in = vstep * k; + _in2 = vstep * l; + for (i = 0; i < n; i++, _in++, _in2++) { + a0 = V[_in]; + b0 = V[_in2]; + V[_in] = a0 * c - b0 * s; + V[_in2] = a0 * s + b0 * c; + } + } + + for(j = 0; j < 2; j++) { + idx = j == 0 ? k : l; + if(idx < n - 1) { + for(m = idx+1, mv = Math.abs(A[astep*idx + m]), i = idx+2; i < n; i++) { + val = Math.abs(A[astep*idx+i]); + if( mv < val ) + mv = val, m = i; + } + indR[idx] = m; + } + if(idx > 0) { + for(m = 0, mv = Math.abs(A[idx]), i = 1; i < idx; i++) { + val = Math.abs(A[astep*i+idx]); + if( mv < val ) + mv = val, m = i; + } + indC[idx] = m; + } + } + } + + // sort eigenvalues & eigenvectors + for(k = 0; k < n-1; k++) { + m = k; + for(i = k+1; i < n; i++) { + if(W[m] < W[i]) + m = i; + } + if(k != m) { + swap(W, m, k, mv); + if(V) { + for(i = 0; i < n; i++) { + swap(V, vstep*m + i, vstep*k + i, mv); + } + } + } + } + + + jsfeat.cache.put_buffer(indR_buff); + jsfeat.cache.put_buffer(indC_buff); + }; + + var JacobiSVDImpl = function(At, astep, _W, Vt, vstep, m, n, n1) { + var eps = jsfeat.EPSILON * 2.0; + var minval = jsfeat.FLT_MIN; + var i=0,j=0,k=0,iter=0,max_iter=Math.max(m, 30); + var Ai=0,Aj=0,Vi=0,Vj=0,changed=0; + var c=0.0, s=0.0, t=0.0; + var t0=0.0,t1=0.0,sd=0.0,beta=0.0,gamma=0.0,delta=0.0,a=0.0,p=0.0,b=0.0; + var seed = 0x1234; + var val=0.0,val0=0.0,asum=0.0; + + var W_buff = jsfeat.cache.get_buffer(n<<3); + var W = W_buff.f64; + + for(; i < n; i++) { + for(k = 0, sd = 0; k < m; k++) { + t = At[i*astep + k]; + sd += t*t; + } + W[i] = sd; + + if(Vt) { + for(k = 0; k < n; k++) { + Vt[i*vstep + k] = 0; + } + Vt[i*vstep + i] = 1; + } + } + + for(; iter < max_iter; iter++) { + changed = 0; + + for(i = 0; i < n-1; i++) { + for(j = i+1; j < n; j++) { + Ai = (i*astep)|0, Aj = (j*astep)|0; + a = W[i], p = 0, b = W[j]; + + k = 2; + p += At[Ai]*At[Aj]; + p += At[Ai+1]*At[Aj+1]; + + for(; k < m; k++) + p += At[Ai+k]*At[Aj+k]; + + if(Math.abs(p) <= eps*Math.sqrt(a*b)) continue; + + p *= 2.0; + beta = a - b, gamma = hypot(p, beta); + if( beta < 0 ) { + delta = (gamma - beta)*0.5; + s = Math.sqrt(delta/gamma); + c = (p/(gamma*s*2.0)); + } else { + c = Math.sqrt((gamma + beta)/(gamma*2.0)); + s = (p/(gamma*c*2.0)); + } + + a=0.0, b=0.0; + + k = 2; // unroll + t0 = c*At[Ai] + s*At[Aj]; + t1 = -s*At[Ai] + c*At[Aj]; + At[Ai] = t0; At[Aj] = t1; + a += t0*t0; b += t1*t1; + + t0 = c*At[Ai+1] + s*At[Aj+1]; + t1 = -s*At[Ai+1] + c*At[Aj+1]; + At[Ai+1] = t0; At[Aj+1] = t1; + a += t0*t0; b += t1*t1; + + for( ; k < m; k++ ) + { + t0 = c*At[Ai+k] + s*At[Aj+k]; + t1 = -s*At[Ai+k] + c*At[Aj+k]; + At[Ai+k] = t0; At[Aj+k] = t1; + + a += t0*t0; b += t1*t1; + } + + W[i] = a; W[j] = b; + + changed = 1; + + if(Vt) { + Vi = (i*vstep)|0, Vj = (j*vstep)|0; + + k = 2; + t0 = c*Vt[Vi] + s*Vt[Vj]; + t1 = -s*Vt[Vi] + c*Vt[Vj]; + Vt[Vi] = t0; Vt[Vj] = t1; + + t0 = c*Vt[Vi+1] + s*Vt[Vj+1]; + t1 = -s*Vt[Vi+1] + c*Vt[Vj+1]; + Vt[Vi+1] = t0; Vt[Vj+1] = t1; + + for(; k < n; k++) { + t0 = c*Vt[Vi+k] + s*Vt[Vj+k]; + t1 = -s*Vt[Vi+k] + c*Vt[Vj+k]; + Vt[Vi+k] = t0; Vt[Vj+k] = t1; + } + } + } + } + if(changed == 0) break; + } + + for(i = 0; i < n; i++) { + for(k = 0, sd = 0; k < m; k++) { + t = At[i*astep + k]; + sd += t*t; + } + W[i] = Math.sqrt(sd); + } + + for(i = 0; i < n-1; i++) { + j = i; + for(k = i+1; k < n; k++) { + if(W[j] < W[k]) + j = k; + } + if(i != j) { + swap(W, i, j, sd); + if(Vt) { + for(k = 0; k < m; k++) { + swap(At, i*astep + k, j*astep + k, t); + } + + for(k = 0; k < n; k++) { + swap(Vt, i*vstep + k, j*vstep + k, t); + } + } + } + } + + for(i = 0; i < n; i++) { + _W[i] = W[i]; + } + + if(!Vt) { + jsfeat.cache.put_buffer(W_buff); + return; + } + + for(i = 0; i < n1; i++) { + + sd = i < n ? W[i] : 0; + + while(sd <= minval) { + // if we got a zero singular value, then in order to get the corresponding left singular vector + // we generate a random vector, project it to the previously computed left singular vectors, + // subtract the projection and normalize the difference. + val0 = (1.0/m); + for(k = 0; k < m; k++) { + seed = (seed * 214013 + 2531011); + val = (((seed >> 16) & 0x7fff) & 256) != 0 ? val0 : -val0; + At[i*astep + k] = val; + } + for(iter = 0; iter < 2; iter++) { + for(j = 0; j < i; j++) { + sd = 0; + for(k = 0; k < m; k++) { + sd += At[i*astep + k]*At[j*astep + k]; + } + asum = 0.0; + for(k = 0; k < m; k++) { + t = (At[i*astep + k] - sd*At[j*astep + k]); + At[i*astep + k] = t; + asum += Math.abs(t); + } + asum = asum ? 1.0/asum : 0; + for(k = 0; k < m; k++) { + At[i*astep + k] *= asum; + } + } + } + sd = 0; + for(k = 0; k < m; k++) { + t = At[i*astep + k]; + sd += t*t; + } + sd = Math.sqrt(sd); + } + + s = (1.0/sd); + for(k = 0; k < m; k++) { + At[i*astep + k] *= s; + } + } + + jsfeat.cache.put_buffer(W_buff); + }; + + return { + + lu_solve: function(A, B) { + var i=0,j=0,k=0,p=1,astep=A.cols; + var ad=A.data, bd=B.data; + var t,alpha,d,s; + + for(i = 0; i < astep; i++) { + k = i; + for(j = i+1; j < astep; j++) { + if(Math.abs(ad[j*astep + i]) > Math.abs(ad[k*astep+i])) { + k = j; + } + } + + if(Math.abs(ad[k*astep+i]) < jsfeat.EPSILON) { + return 0; // FAILED + } + + if(k != i) { + for(j = i; j < astep; j++ ) { + swap(ad, i*astep+j, k*astep+j, t); + } + + swap(bd, i, k, t); + p = -p; + } + + d = -1.0/ad[i*astep+i]; + + for(j = i+1; j < astep; j++) { + alpha = ad[j*astep+i]*d; + + for(k = i+1; k < astep; k++) { + ad[j*astep+k] += alpha*ad[i*astep+k]; + } + + bd[j] += alpha*bd[i]; + } + + ad[i*astep+i] = -d; + } + + for(i = astep-1; i >= 0; i--) { + s = bd[i]; + for(k = i+1; k < astep; k++) { + s -= ad[i*astep+k]*bd[k]; + } + bd[i] = s*ad[i*astep+i]; + } + + return 1; // OK + }, + + cholesky_solve: function(A, B) { + var col=0,row=0,col2=0,cs=0,rs=0,i=0,j=0; + var size = A.cols; + var ad=A.data, bd=B.data; + var val,inv_diag; + + for (col = 0; col < size; col++) { + inv_diag = 1.0; + cs = (col * size); + rs = cs; + for (row = col; row < size; row++) + { + // correct for the parts of cholesky already computed + val = ad[(rs+col)]; + for (col2 = 0; col2 < col; col2++) { + val -= ad[(col2*size+col)] * ad[(rs+col2)]; + } + if (row == col) { + // this is the diagonal element so don't divide + ad[(rs+col)] = val; + if(val == 0) { + return 0; + } + inv_diag = 1.0 / val; + } else { + // cache the value without division in the upper half + ad[(cs+row)] = val; + // divide my the diagonal element for all others + ad[(rs+col)] = val * inv_diag; + } + rs = (rs + size); + } + } + + // first backsub through L + cs = 0; + for (i = 0; i < size; i++) { + val = bd[i]; + for (j = 0; j < i; j++) { + val -= ad[(cs+j)] * bd[j]; + } + bd[i] = val; + cs = (cs + size); + } + // backsub through diagonal + cs = 0; + for (i = 0; i < size; i++) { + bd[i] /= ad[(cs + i)]; + cs = (cs + size); + } + // backsub through L Transpose + i = (size-1); + for (; i >= 0; i--) { + val = bd[i]; + j = (i + 1); + cs = (j * size); + for (; j < size; j++) { + val -= ad[(cs + i)] * bd[j]; + cs = (cs + size); + } + bd[i] = val; + } + + return 1; + }, + + svd_decompose: function(A, W, U, V, options) { + if (typeof options === "undefined") { options = 0; } + var at=0,i=0,j=0,_m=A.rows,_n=A.cols,m=_m,n=_n; + var dt = A.type | jsfeat.C1_t; // we only work with single channel + + if(m < n) { + at = 1; + i = m; + m = n; + n = i; + } + + var a_buff = jsfeat.cache.get_buffer((m*m)<<3); + var w_buff = jsfeat.cache.get_buffer(n<<3); + var v_buff = jsfeat.cache.get_buffer((n*n)<<3); + + var a_mt = new jsfeat.matrix_t(m, m, dt, a_buff.data); + var w_mt = new jsfeat.matrix_t(1, n, dt, w_buff.data); + var v_mt = new jsfeat.matrix_t(n, n, dt, v_buff.data); + + if(at == 0) { + // transpose + jsfeat.matmath.transpose(a_mt, A); + } else { + for(i = 0; i < _n*_m; i++) { + a_mt.data[i] = A.data[i]; + } + for(; i < n*m; i++) { + a_mt.data[i] = 0; + } + } + + JacobiSVDImpl(a_mt.data, m, w_mt.data, v_mt.data, n, m, n, m); + + if(W) { + for(i=0; i < n; i++) { + W.data[i] = w_mt.data[i]; + } + for(; i < _n; i++) { + W.data[i] = 0; + } + } + + if (at == 0) { + if(U && (options & jsfeat.SVD_U_T)) { + i = m*m; + while(--i >= 0) { + U.data[i] = a_mt.data[i]; + } + } else if(U) { + jsfeat.matmath.transpose(U, a_mt); + } + + if(V && (options & jsfeat.SVD_V_T)) { + i = n*n; + while(--i >= 0) { + V.data[i] = v_mt.data[i]; + } + } else if(V) { + jsfeat.matmath.transpose(V, v_mt); + } + } else { + if(U && (options & jsfeat.SVD_U_T)) { + i = n*n; + while(--i >= 0) { + U.data[i] = v_mt.data[i]; + } + } else if(U) { + jsfeat.matmath.transpose(U, v_mt); + } + + if(V && (options & jsfeat.SVD_V_T)) { + i = m*m; + while(--i >= 0) { + V.data[i] = a_mt.data[i]; + } + } else if(V) { + jsfeat.matmath.transpose(V, a_mt); + } + } + + jsfeat.cache.put_buffer(a_buff); + jsfeat.cache.put_buffer(w_buff); + jsfeat.cache.put_buffer(v_buff); + + }, + + svd_solve: function(A, X, B) { + var i=0,j=0,k=0; + var pu=0,pv=0; + var nrows=A.rows,ncols=A.cols; + var sum=0.0,xsum=0.0,tol=0.0; + var dt = A.type | jsfeat.C1_t; + + var u_buff = jsfeat.cache.get_buffer((nrows*nrows)<<3); + var w_buff = jsfeat.cache.get_buffer(ncols<<3); + var v_buff = jsfeat.cache.get_buffer((ncols*ncols)<<3); + + var u_mt = new jsfeat.matrix_t(nrows, nrows, dt, u_buff.data); + var w_mt = new jsfeat.matrix_t(1, ncols, dt, w_buff.data); + var v_mt = new jsfeat.matrix_t(ncols, ncols, dt, v_buff.data); + + var bd = B.data, ud = u_mt.data, wd = w_mt.data, vd = v_mt.data; + + this.svd_decompose(A, w_mt, u_mt, v_mt, 0); + + tol = jsfeat.EPSILON * wd[0] * ncols; + + for (; i < ncols; i++, pv += ncols) { + xsum = 0.0; + for(j = 0; j < ncols; j++) { + if(wd[j] > tol) { + for(k = 0, sum = 0.0, pu = 0; k < nrows; k++, pu += ncols) { + sum += ud[pu + j] * bd[k]; + } + xsum += sum * vd[pv + j] / wd[j]; + } + } + X.data[i] = xsum; + } + + jsfeat.cache.put_buffer(u_buff); + jsfeat.cache.put_buffer(w_buff); + jsfeat.cache.put_buffer(v_buff); + }, + + svd_invert: function(Ai, A) { + var i=0,j=0,k=0; + var pu=0,pv=0,pa=0; + var nrows=A.rows,ncols=A.cols; + var sum=0.0,tol=0.0; + var dt = A.type | jsfeat.C1_t; + + var u_buff = jsfeat.cache.get_buffer((nrows*nrows)<<3); + var w_buff = jsfeat.cache.get_buffer(ncols<<3); + var v_buff = jsfeat.cache.get_buffer((ncols*ncols)<<3); + + var u_mt = new jsfeat.matrix_t(nrows, nrows, dt, u_buff.data); + var w_mt = new jsfeat.matrix_t(1, ncols, dt, w_buff.data); + var v_mt = new jsfeat.matrix_t(ncols, ncols, dt, v_buff.data); + + var id = Ai.data, ud = u_mt.data, wd = w_mt.data, vd = v_mt.data; + + this.svd_decompose(A, w_mt, u_mt, v_mt, 0); + + tol = jsfeat.EPSILON * wd[0] * ncols; + + for (; i < ncols; i++, pv += ncols) { + for (j = 0, pu = 0; j < nrows; j++, pa++) { + for (k = 0, sum = 0.0; k < ncols; k++, pu++) { + if (wd[k] > tol) sum += vd[pv + k] * ud[pu] / wd[k]; + } + id[pa] = sum; + } + } + + jsfeat.cache.put_buffer(u_buff); + jsfeat.cache.put_buffer(w_buff); + jsfeat.cache.put_buffer(v_buff); + }, + + eigenVV: function(A, vects, vals) { + var n=A.cols,i=n*n; + var dt = A.type | jsfeat.C1_t; + + var a_buff = jsfeat.cache.get_buffer((n*n)<<3); + var w_buff = jsfeat.cache.get_buffer(n<<3); + var a_mt = new jsfeat.matrix_t(n, n, dt, a_buff.data); + var w_mt = new jsfeat.matrix_t(1, n, dt, w_buff.data); + + while(--i >= 0) { + a_mt.data[i] = A.data[i]; + } + + JacobiImpl(a_mt.data, n, w_mt.data, vects ? vects.data : null, n, n); + + if(vals) { + while(--n >= 0) { + vals.data[n] = w_mt.data[n]; + } + } + + jsfeat.cache.put_buffer(a_buff); + jsfeat.cache.put_buffer(w_buff); + } + + }; + + })(); + + global.linalg = linalg; + +})(jsfeat); +/** + * @author Eugene Zatepyakin / http://inspirit.ru/ + * + */ + +(function(global) { + "use strict"; + // + + var motion_model = (function() { + + var sqr = function(x) { + return x*x; + }; + + // does isotropic normalization + var iso_normalize_points = function(from, to, T0, T1, count) { + var i=0; + var cx0=0.0, cy0=0.0, d0=0.0, s0=0.0; + var cx1=0.0, cy1=0.0, d1=0.0, s1=0.0; + var dx=0.0,dy=0.0; + + for (; i < count; ++i) { + cx0 += from[i].x; + cy0 += from[i].y; + cx1 += to[i].x; + cy1 += to[i].y; + } + + cx0 /= count; cy0 /= count; + cx1 /= count; cy1 /= count; + + for (i = 0; i < count; ++i) { + dx = from[i].x - cx0; + dy = from[i].y - cy0; + d0 += Math.sqrt(dx*dx + dy*dy); + dx = to[i].x - cx1; + dy = to[i].y - cy1; + d1 += Math.sqrt(dx*dx + dy*dy); + } + + d0 /= count; d1 /= count; + + s0 = Math.SQRT2 / d0; s1 = Math.SQRT2 / d1; + + T0[0] = T0[4] = s0; + T0[2] = -cx0*s0; + T0[5] = -cy0*s0; + T0[1] = T0[3] = T0[6] = T0[7] = 0.0; + T0[8] = 1.0; + + T1[0] = T1[4] = s1; + T1[2] = -cx1*s1; + T1[5] = -cy1*s1; + T1[1] = T1[3] = T1[6] = T1[7] = 0.0; + T1[8] = 1.0; + }; + + var have_collinear_points = function(points, count) { + var j=0,k=0,i=(count-1)|0; + var dx1=0.0,dy1=0.0,dx2=0.0,dy2=0.0; + + // check that the i-th selected point does not belong + // to a line connecting some previously selected points + for(; j < i; ++j) { + dx1 = points[j].x - points[i].x; + dy1 = points[j].y - points[i].y; + for(k = 0; k < j; ++k) { + dx2 = points[k].x - points[i].x; + dy2 = points[k].y - points[i].y; + if( Math.abs(dx2*dy1 - dy2*dx1) <= jsfeat.EPSILON*(Math.abs(dx1) + Math.abs(dy1) + Math.abs(dx2) + Math.abs(dy2))) + return true; + } + } + return false; + }; + + var T0 = new jsfeat.matrix_t(3, 3, jsfeat.F32_t|jsfeat.C1_t); + var T1 = new jsfeat.matrix_t(3, 3, jsfeat.F32_t|jsfeat.C1_t); + var AtA = new jsfeat.matrix_t(6, 6, jsfeat.F32_t|jsfeat.C1_t); + var AtB = new jsfeat.matrix_t(6, 1, jsfeat.F32_t|jsfeat.C1_t); + + var affine2d = (function () { + + function affine2d() { + // empty constructor + } + + affine2d.prototype.run = function(from, to, model, count) { + var i=0,j=0; + var dt=model.type|jsfeat.C1_t; + var md=model.data, t0d=T0.data, t1d=T1.data; + var pt0,pt1,px=0.0,py=0.0; + + iso_normalize_points(from, to, t0d, t1d, count); + + var a_buff = jsfeat.cache.get_buffer((2*count*6)<<3); + var b_buff = jsfeat.cache.get_buffer((2*count)<<3); + + var a_mt = new jsfeat.matrix_t(6, 2*count, dt, a_buff.data); + var b_mt = new jsfeat.matrix_t(1, 2*count, dt, b_buff.data); + var ad=a_mt.data, bd=b_mt.data; + + for (; i < count; ++i) { + pt0 = from[i]; + pt1 = to[i]; + + px = t0d[0]*pt0.x + t0d[1]*pt0.y + t0d[2]; + py = t0d[3]*pt0.x + t0d[4]*pt0.y + t0d[5]; + + j = i*2*6; + ad[j]=px, ad[j+1]=py, ad[j+2]=1.0, ad[j+3]=0.0, ad[j+4]=0.0, ad[j+5]=0.0; + + j += 6; + ad[j]=0.0, ad[j+1]=0.0, ad[j+2]=0.0, ad[j+3]=px, ad[j+4]=py, ad[j+5]=1.0; + + bd[i<<1] = t1d[0]*pt1.x + t1d[1]*pt1.y + t1d[2]; + bd[(i<<1)+1] = t1d[3]*pt1.x + t1d[4]*pt1.y + t1d[5]; + } + + jsfeat.matmath.multiply_AtA(AtA, a_mt); + jsfeat.matmath.multiply_AtB(AtB, a_mt, b_mt); + + jsfeat.linalg.lu_solve(AtA, AtB); + + md[0] = AtB.data[0], md[1]=AtB.data[1], md[2]=AtB.data[2]; + md[3] = AtB.data[3], md[4]=AtB.data[4], md[5]=AtB.data[5]; + md[6] = 0.0, md[7] = 0.0, md[8] = 1.0; // fill last row + + // denormalize + jsfeat.matmath.invert_3x3(T1, T1); + jsfeat.matmath.multiply_3x3(model, T1, model); + jsfeat.matmath.multiply_3x3(model, model, T0); + + // free buffer + jsfeat.cache.put_buffer(a_buff); + jsfeat.cache.put_buffer(b_buff); + + return 1; + }; + + affine2d.prototype.error = function(from, to, model, err, count) { + var i=0; + var pt0,pt1; + var m=model.data; + + for (; i < count; ++i) { + pt0 = from[i]; + pt1 = to[i]; + + err[i] = sqr(pt1.x - m[0]*pt0.x - m[1]*pt0.y - m[2]) + + sqr(pt1.y - m[3]*pt0.x - m[4]*pt0.y - m[5]); + } + }; + + affine2d.prototype.check_subset = function(from, to, count) { + return true; // all good + }; + + return affine2d; + })(); + + var mLtL = new jsfeat.matrix_t(9, 9, jsfeat.F32_t|jsfeat.C1_t); + var Evec = new jsfeat.matrix_t(9, 9, jsfeat.F32_t|jsfeat.C1_t); + + var homography2d = (function () { + + function homography2d() { + // empty constructor + //this.T0 = new jsfeat.matrix_t(3, 3, jsfeat.F32_t|jsfeat.C1_t); + //this.T1 = new jsfeat.matrix_t(3, 3, jsfeat.F32_t|jsfeat.C1_t); + //this.mLtL = new jsfeat.matrix_t(9, 9, jsfeat.F32_t|jsfeat.C1_t); + //this.Evec = new jsfeat.matrix_t(9, 9, jsfeat.F32_t|jsfeat.C1_t); + } + + homography2d.prototype.run = function(from, to, model, count) { + var i=0,j=0; + var md=model.data, t0d=T0.data, t1d=T1.data; + var LtL=mLtL.data, evd=Evec.data; + var x=0.0,y=0.0,X=0.0,Y=0.0; + + // norm + var smx=0.0, smy=0.0, cmx=0.0, cmy=0.0, sMx=0.0, sMy=0.0, cMx=0.0, cMy=0.0; + + for(; i < count; ++i) { + cmx += to[i].x; + cmy += to[i].y; + cMx += from[i].x; + cMy += from[i].y; + } + + cmx /= count; cmy /= count; + cMx /= count; cMy /= count; + + for(i = 0; i < count; ++i) + { + smx += Math.abs(to[i].x - cmx); + smy += Math.abs(to[i].y - cmy); + sMx += Math.abs(from[i].x - cMx); + sMy += Math.abs(from[i].y - cMy); + } + + if( Math.abs(smx) < jsfeat.EPSILON + || Math.abs(smy) < jsfeat.EPSILON + || Math.abs(sMx) < jsfeat.EPSILON + || Math.abs(sMy) < jsfeat.EPSILON ) return 0; + + smx = count/smx; smy = count/smy; + sMx = count/sMx; sMy = count/sMy; + + t0d[0] = sMx; t0d[1] = 0; t0d[2] = -cMx*sMx; + t0d[3] = 0; t0d[4] = sMy; t0d[5] = -cMy*sMy; + t0d[6] = 0; t0d[7] = 0; t0d[8] = 1; + + t1d[0] = 1.0/smx; t1d[1] = 0; t1d[2] = cmx; + t1d[3] = 0; t1d[4] = 1.0/smy; t1d[5] = cmy; + t1d[6] = 0; t1d[7] = 0; t1d[8] = 1; + // + + // construct system + i = 81; + while(--i >= 0) { + LtL[i] = 0.0; + } + for(i = 0; i < count; ++i) { + x = (to[i].x - cmx) * smx; + y = (to[i].y - cmy) * smy; + X = (from[i].x - cMx) * sMx; + Y = (from[i].y - cMy) * sMy; + + LtL[0] += X*X; + LtL[1] += X*Y; + LtL[2] += X; + + LtL[6] += X*-x*X; + LtL[7] += X*-x*Y; + LtL[8] += X*-x; + LtL[10] += Y*Y; + LtL[11] += Y; + + LtL[15] += Y*-x*X; + LtL[16] += Y*-x*Y; + LtL[17] += Y*-x; + LtL[20] += 1.0; + + LtL[24] += -x*X; + LtL[25] += -x*Y; + LtL[26] += -x; + LtL[30] += X*X; + LtL[31] += X*Y; + LtL[32] += X; + LtL[33] += X*-y*X; + LtL[34] += X*-y*Y; + LtL[35] += X*-y; + LtL[40] += Y*Y; + LtL[41] += Y; + LtL[42] += Y*-y*X; + LtL[43] += Y*-y*Y; + LtL[44] += Y*-y; + LtL[50] += 1.0; + LtL[51] += -y*X; + LtL[52] += -y*Y; + LtL[53] += -y; + LtL[60] += -x*X*-x*X + -y*X*-y*X; + LtL[61] += -x*X*-x*Y + -y*X*-y*Y; + LtL[62] += -x*X*-x + -y*X*-y; + LtL[70] += -x*Y*-x*Y + -y*Y*-y*Y; + LtL[71] += -x*Y*-x + -y*Y*-y; + LtL[80] += -x*-x + -y*-y; + } + // + + // symmetry + for(i = 0; i < 9; ++i) { + for(j = 0; j < i; ++j) + LtL[i*9+j] = LtL[j*9+i]; + } + + jsfeat.linalg.eigenVV(mLtL, Evec); + + md[0]=evd[72], md[1]=evd[73], md[2]=evd[74]; + md[3]=evd[75], md[4]=evd[76], md[5]=evd[77]; + md[6]=evd[78], md[7]=evd[79], md[8]=evd[80]; + + // denormalize + jsfeat.matmath.multiply_3x3(model, T1, model); + jsfeat.matmath.multiply_3x3(model, model, T0); + + // set bottom right to 1.0 + x = 1.0/md[8]; + md[0] *= x; md[1] *= x; md[2] *= x; + md[3] *= x; md[4] *= x; md[5] *= x; + md[6] *= x; md[7] *= x; md[8] = 1.0; + + return 1; + }; + + homography2d.prototype.error = function(from, to, model, err, count) { + var i=0; + var pt0,pt1,ww=0.0,dx=0.0,dy=0.0; + var m=model.data; + + for (; i < count; ++i) { + pt0 = from[i]; + pt1 = to[i]; + + ww = 1.0/(m[6]*pt0.x + m[7]*pt0.y + 1.0); + dx = (m[0]*pt0.x + m[1]*pt0.y + m[2])*ww - pt1.x; + dy = (m[3]*pt0.x + m[4]*pt0.y + m[5])*ww - pt1.y; + err[i] = (dx*dx + dy*dy); + } + }; + + homography2d.prototype.check_subset = function(from, to, count) { + // seems to reject good subsets actually + //if( have_collinear_points(from, count) || have_collinear_points(to, count) ) { + //return false; + //} + if( count == 4 ) { + var negative = 0; + + var fp0=from[0],fp1=from[1],fp2=from[2],fp3=from[3]; + var tp0=to[0],tp1=to[1],tp2=to[2],tp3=to[3]; + + // set1 + var A11=fp0.x, A12=fp0.y, A13=1.0; + var A21=fp1.x, A22=fp1.y, A23=1.0; + var A31=fp2.x, A32=fp2.y, A33=1.0; + + var B11=tp0.x, B12=tp0.y, B13=1.0; + var B21=tp1.x, B22=tp1.y, B23=1.0; + var B31=tp2.x, B32=tp2.y, B33=1.0; + + var detA = jsfeat.matmath.determinant_3x3(A11,A12,A13, A21,A22,A23, A31,A32,A33); + var detB = jsfeat.matmath.determinant_3x3(B11,B12,B13, B21,B22,B23, B31,B32,B33); + + if(detA*detB < 0) negative++; + + // set2 + A11=fp1.x, A12=fp1.y; + A21=fp2.x, A22=fp2.y; + A31=fp3.x, A32=fp3.y; + + B11=tp1.x, B12=tp1.y; + B21=tp2.x, B22=tp2.y; + B31=tp3.x, B32=tp3.y; + + detA = jsfeat.matmath.determinant_3x3(A11,A12,A13, A21,A22,A23, A31,A32,A33); + detB = jsfeat.matmath.determinant_3x3(B11,B12,B13, B21,B22,B23, B31,B32,B33); + + if(detA*detB < 0) negative++; + + // set3 + A11=fp0.x, A12=fp0.y; + A21=fp2.x, A22=fp2.y; + A31=fp3.x, A32=fp3.y; + + B11=tp0.x, B12=tp0.y; + B21=tp2.x, B22=tp2.y; + B31=tp3.x, B32=tp3.y; + + detA = jsfeat.matmath.determinant_3x3(A11,A12,A13, A21,A22,A23, A31,A32,A33); + detB = jsfeat.matmath.determinant_3x3(B11,B12,B13, B21,B22,B23, B31,B32,B33); + + if(detA*detB < 0) negative++; + + // set4 + A11=fp0.x, A12=fp0.y; + A21=fp1.x, A22=fp1.y; + A31=fp3.x, A32=fp3.y; + + B11=tp0.x, B12=tp0.y; + B21=tp1.x, B22=tp1.y; + B31=tp3.x, B32=tp3.y; + + detA = jsfeat.matmath.determinant_3x3(A11,A12,A13, A21,A22,A23, A31,A32,A33); + detB = jsfeat.matmath.determinant_3x3(B11,B12,B13, B21,B22,B23, B31,B32,B33); + + if(detA*detB < 0) negative++; + + if(negative != 0 && negative != 4) { + return false; + } + } + return true; // all good + }; + + return homography2d; + })(); + + return { + + affine2d:affine2d, + homography2d:homography2d + + }; + + })(); + + var ransac_params_t = (function () { + function ransac_params_t(size, thresh, eps, prob) { + if (typeof size === "undefined") { size=0; } + if (typeof thresh === "undefined") { thresh=0.5; } + if (typeof eps === "undefined") { eps=0.5; } + if (typeof prob === "undefined") { prob=0.99; } + + this.size = size; + this.thresh = thresh; + this.eps = eps; + this.prob = prob; + } + ransac_params_t.prototype.update_iters = function(_eps, max_iters) { + var num = Math.log(1 - this.prob); + var denom = Math.log(1 - Math.pow(1 - _eps, this.size)); + return (denom >= 0 || -num >= max_iters*(-denom) ? max_iters : Math.round(num/denom))|0; + }; + return ransac_params_t; + })(); + + var motion_estimator = (function() { + + var get_subset = function(kernel, from, to, need_cnt, max_cnt, from_sub, to_sub) { + var max_try = 1000; + var indices = []; + var i=0, j=0, ssiter=0, idx_i=0, ok=false; + for(; ssiter < max_try; ++ssiter) { + i = 0; + for (; i < need_cnt && ssiter < max_try;) { + ok = false; + idx_i = 0; + while (!ok) { + ok = true; + idx_i = indices[i] = Math.floor(Math.random() * max_cnt)|0; + for (j = 0; j < i; ++j) { + if (idx_i == indices[j]) + { ok = false; break; } + } + } + from_sub[i] = from[idx_i]; + to_sub[i] = to[idx_i]; + if( !kernel.check_subset( from_sub, to_sub, i+1 ) ) { + ssiter++; + continue; + } + ++i; + } + break; + } + + return (i == need_cnt && ssiter < max_try); + }; + + var find_inliers = function(kernel, model, from, to, count, thresh, err, mask) { + var numinliers = 0, i=0, f=0; + var t = thresh*thresh; + + kernel.error(from, to, model, err, count); + + for(; i < count; ++i) { + f = err[i] <= t; + mask[i] = f; + numinliers += f; + } + return numinliers; + }; + + return { + + ransac: function(params, kernel, from, to, count, model, mask, max_iters) { + if (typeof max_iters === "undefined") { max_iters=1000; } + + if(count < params.size) return false; + + var model_points = params.size; + var niters = max_iters, iter=0; + var result = false; + + var subset0 = []; + var subset1 = []; + var found = false; + + var mc=model.cols,mr=model.rows; + var dt = model.type | jsfeat.C1_t; + + var m_buff = jsfeat.cache.get_buffer((mc*mr)<<3); + var ms_buff = jsfeat.cache.get_buffer(count); + var err_buff = jsfeat.cache.get_buffer(count<<2); + var M = new jsfeat.matrix_t(mc, mr, dt, m_buff.data); + var curr_mask = new jsfeat.matrix_t(count, 1, jsfeat.U8C1_t, ms_buff.data); + + var inliers_max = -1, numinliers=0; + var nmodels = 0; + + var err = err_buff.f32; + + // special case + if(count == model_points) { + if(kernel.run(from, to, M, count) <= 0) { + jsfeat.cache.put_buffer(m_buff); + jsfeat.cache.put_buffer(ms_buff); + jsfeat.cache.put_buffer(err_buff); + return false; + } + + M.copy_to(model); + if(mask) { + while(--count >= 0) { + mask.data[count] = 1; + } + } + jsfeat.cache.put_buffer(m_buff); + jsfeat.cache.put_buffer(ms_buff); + jsfeat.cache.put_buffer(err_buff); + return true; + } + + for (; iter < niters; ++iter) { + // generate subset + found = get_subset(kernel, from, to, model_points, count, subset0, subset1); + if(!found) { + if(iter == 0) { + jsfeat.cache.put_buffer(m_buff); + jsfeat.cache.put_buffer(ms_buff); + jsfeat.cache.put_buffer(err_buff); + return false; + } + break; + } + + nmodels = kernel.run( subset0, subset1, M, model_points ); + if(nmodels <= 0) + continue; + + // TODO handle multimodel output + + numinliers = find_inliers(kernel, M, from, to, count, params.thresh, err, curr_mask.data); + + if( numinliers > Math.max(inliers_max, model_points-1) ) { + M.copy_to(model); + inliers_max = numinliers; + if(mask) curr_mask.copy_to(mask); + niters = params.update_iters((count - numinliers)/count, niters); + result = true; + } + } + + jsfeat.cache.put_buffer(m_buff); + jsfeat.cache.put_buffer(ms_buff); + jsfeat.cache.put_buffer(err_buff); + + return result; + }, + + lmeds: function(params, kernel, from, to, count, model, mask, max_iters) { + if (typeof max_iters === "undefined") { max_iters=1000; } + + if(count < params.size) return false; + + var model_points = params.size; + var niters = max_iters, iter=0; + var result = false; + + var subset0 = []; + var subset1 = []; + var found = false; + + var mc=model.cols,mr=model.rows; + var dt = model.type | jsfeat.C1_t; + + var m_buff = jsfeat.cache.get_buffer((mc*mr)<<3); + var ms_buff = jsfeat.cache.get_buffer(count); + var err_buff = jsfeat.cache.get_buffer(count<<2); + var M = new jsfeat.matrix_t(mc, mr, dt, m_buff.data); + var curr_mask = new jsfeat.matrix_t(count, 1, jsfeat.U8_t|jsfeat.C1_t, ms_buff.data); + + var numinliers=0; + var nmodels = 0; + + var err = err_buff.f32; + var min_median = 1000000000.0, sigma=0.0, median=0.0; + + params.eps = 0.45; + niters = params.update_iters(params.eps, niters); + + // special case + if(count == model_points) { + if(kernel.run(from, to, M, count) <= 0) { + jsfeat.cache.put_buffer(m_buff); + jsfeat.cache.put_buffer(ms_buff); + jsfeat.cache.put_buffer(err_buff); + return false; + } + + M.copy_to(model); + if(mask) { + while(--count >= 0) { + mask.data[count] = 1; + } + } + jsfeat.cache.put_buffer(m_buff); + jsfeat.cache.put_buffer(ms_buff); + jsfeat.cache.put_buffer(err_buff); + return true; + } + + for (; iter < niters; ++iter) { + // generate subset + found = get_subset(kernel, from, to, model_points, count, subset0, subset1); + if(!found) { + if(iter == 0) { + jsfeat.cache.put_buffer(m_buff); + jsfeat.cache.put_buffer(ms_buff); + jsfeat.cache.put_buffer(err_buff); + return false; + } + break; + } + + nmodels = kernel.run( subset0, subset1, M, model_points ); + if(nmodels <= 0) + continue; + + // TODO handle multimodel output + + kernel.error(from, to, M, err, count); + median = jsfeat.math.median(err, 0, count-1); + + if(median < min_median) { + min_median = median; + M.copy_to(model); + result = true; + } + } + + if(result) { + sigma = 2.5*1.4826*(1 + 5.0/(count - model_points))*Math.sqrt(min_median); + sigma = Math.max(sigma, 0.001); + + numinliers = find_inliers(kernel, model, from, to, count, sigma, err, curr_mask.data); + if(mask) curr_mask.copy_to(mask); + + result = numinliers >= model_points; + } + + jsfeat.cache.put_buffer(m_buff); + jsfeat.cache.put_buffer(ms_buff); + jsfeat.cache.put_buffer(err_buff); + + return result; + } + + }; + + })(); + + global.ransac_params_t = ransac_params_t; + global.motion_model = motion_model; + global.motion_estimator = motion_estimator; + +})(jsfeat); +/** + * @author Eugene Zatepyakin / http://inspirit.ru/ + */ + +(function(global) { + "use strict"; + // + + var imgproc = (function() { + + var _resample_u8 = function(src, dst, nw, nh) { + var xofs_count=0; + var ch=src.channel,w=src.cols,h=src.rows; + var src_d=src.data,dst_d=dst.data; + var scale_x = w / nw, scale_y = h / nh; + var inv_scale_256 = (scale_x * scale_y * 0x10000)|0; + var dx=0,dy=0,sx=0,sy=0,sx1=0,sx2=0,i=0,k=0,fsx1=0.0,fsx2=0.0; + var a=0,b=0,dxn=0,alpha=0,beta=0,beta1=0; + + var buf_node = jsfeat.cache.get_buffer((nw*ch)<<2); + var sum_node = jsfeat.cache.get_buffer((nw*ch)<<2); + var xofs_node = jsfeat.cache.get_buffer((w*2*3)<<2); + + var buf = buf_node.i32; + var sum = sum_node.i32; + var xofs = xofs_node.i32; + + for (; dx < nw; dx++) { + fsx1 = dx * scale_x, fsx2 = fsx1 + scale_x; + sx1 = (fsx1 + 1.0 - 1e-6)|0, sx2 = fsx2|0; + sx1 = Math.min(sx1, w - 1); + sx2 = Math.min(sx2, w - 1); + + if(sx1 > fsx1) { + xofs[k++] = (dx * ch)|0; + xofs[k++] = ((sx1 - 1)*ch)|0; + xofs[k++] = ((sx1 - fsx1) * 0x100)|0; + xofs_count++; + } + for(sx = sx1; sx < sx2; sx++){ + xofs_count++; + xofs[k++] = (dx * ch)|0; + xofs[k++] = (sx * ch)|0; + xofs[k++] = 256; + } + if(fsx2 - sx2 > 1e-3) { + xofs_count++; + xofs[k++] = (dx * ch)|0; + xofs[k++] = (sx2 * ch)|0; + xofs[k++] = ((fsx2 - sx2) * 256)|0; + } + } + + for (dx = 0; dx < nw * ch; dx++) { + buf[dx] = sum[dx] = 0; + } + dy = 0; + for (sy = 0; sy < h; sy++) { + a = w * sy; + for (k = 0; k < xofs_count; k++) { + dxn = xofs[k*3]; + sx1 = xofs[k*3+1]; + alpha = xofs[k*3+2]; + for (i = 0; i < ch; i++) { + buf[dxn + i] += src_d[a+sx1+i] * alpha; + } + } + if ((dy + 1) * scale_y <= sy + 1 || sy == h - 1) { + beta = (Math.max(sy + 1 - (dy + 1) * scale_y, 0.0) * 256)|0; + beta1 = 256 - beta; + b = nw * dy; + if (beta <= 0) { + for (dx = 0; dx < nw * ch; dx++) { + dst_d[b+dx] = Math.min(Math.max((sum[dx] + buf[dx] * 256) / inv_scale_256, 0), 255); + sum[dx] = buf[dx] = 0; + } + } else { + for (dx = 0; dx < nw * ch; dx++) { + dst_d[b+dx] = Math.min(Math.max((sum[dx] + buf[dx] * beta1) / inv_scale_256, 0), 255); + sum[dx] = buf[dx] * beta; + buf[dx] = 0; + } + } + dy++; + } else { + for(dx = 0; dx < nw * ch; dx++) { + sum[dx] += buf[dx] * 256; + buf[dx] = 0; + } + } + } + + jsfeat.cache.put_buffer(sum_node); + jsfeat.cache.put_buffer(buf_node); + jsfeat.cache.put_buffer(xofs_node); + }; + + var _resample = function(src, dst, nw, nh) { + var xofs_count=0; + var ch=src.channel,w=src.cols,h=src.rows; + var src_d=src.data,dst_d=dst.data; + var scale_x = w / nw, scale_y = h / nh; + var scale = 1.0 / (scale_x * scale_y); + var dx=0,dy=0,sx=0,sy=0,sx1=0,sx2=0,i=0,k=0,fsx1=0.0,fsx2=0.0; + var a=0,b=0,dxn=0,alpha=0.0,beta=0.0,beta1=0.0; + + var buf_node = jsfeat.cache.get_buffer((nw*ch)<<2); + var sum_node = jsfeat.cache.get_buffer((nw*ch)<<2); + var xofs_node = jsfeat.cache.get_buffer((w*2*3)<<2); + + var buf = buf_node.f32; + var sum = sum_node.f32; + var xofs = xofs_node.f32; + + for (; dx < nw; dx++) { + fsx1 = dx * scale_x, fsx2 = fsx1 + scale_x; + sx1 = (fsx1 + 1.0 - 1e-6)|0, sx2 = fsx2|0; + sx1 = Math.min(sx1, w - 1); + sx2 = Math.min(sx2, w - 1); + + if(sx1 > fsx1) { + xofs_count++; + xofs[k++] = ((sx1 - 1)*ch)|0; + xofs[k++] = (dx * ch)|0; + xofs[k++] = (sx1 - fsx1) * scale; + } + for(sx = sx1; sx < sx2; sx++){ + xofs_count++; + xofs[k++] = (sx * ch)|0; + xofs[k++] = (dx * ch)|0; + xofs[k++] = scale; + } + if(fsx2 - sx2 > 1e-3) { + xofs_count++; + xofs[k++] = (sx2 * ch)|0; + xofs[k++] = (dx * ch)|0; + xofs[k++] = (fsx2 - sx2) * scale; + } + } + + for (dx = 0; dx < nw * ch; dx++) { + buf[dx] = sum[dx] = 0; + } + dy = 0; + for (sy = 0; sy < h; sy++) { + a = w * sy; + for (k = 0; k < xofs_count; k++) { + sx1 = xofs[k*3]|0; + dxn = xofs[k*3+1]|0; + alpha = xofs[k*3+2]; + for (i = 0; i < ch; i++) { + buf[dxn + i] += src_d[a+sx1+i] * alpha; + } + } + if ((dy + 1) * scale_y <= sy + 1 || sy == h - 1) { + beta = Math.max(sy + 1 - (dy + 1) * scale_y, 0.0); + beta1 = 1.0 - beta; + b = nw * dy; + if (Math.abs(beta) < 1e-3) { + for (dx = 0; dx < nw * ch; dx++) { + dst_d[b+dx] = sum[dx] + buf[dx]; + sum[dx] = buf[dx] = 0; + } + } else { + for (dx = 0; dx < nw * ch; dx++) { + dst_d[b+dx] = sum[dx] + buf[dx] * beta1; + sum[dx] = buf[dx] * beta; + buf[dx] = 0; + } + } + dy++; + } else { + for(dx = 0; dx < nw * ch; dx++) { + sum[dx] += buf[dx]; + buf[dx] = 0; + } + } + } + jsfeat.cache.put_buffer(sum_node); + jsfeat.cache.put_buffer(buf_node); + jsfeat.cache.put_buffer(xofs_node); + }; + + var _convol_u8 = function(buf, src_d, dst_d, w, h, filter, kernel_size, half_kernel) { + var i=0,j=0,k=0,sp=0,dp=0,sum=0,sum1=0,sum2=0,sum3=0,f0=filter[0],fk=0; + var w2=w<<1,w3=w*3,w4=w<<2; + // hor pass + for (; i < h; ++i) { + sum = src_d[sp]; + for (j = 0; j < half_kernel; ++j) { + buf[j] = sum; + } + for (j = 0; j <= w-2; j+=2) { + buf[j + half_kernel] = src_d[sp+j]; + buf[j + half_kernel+1] = src_d[sp+j+1]; + } + for (; j < w; ++j) { + buf[j + half_kernel] = src_d[sp+j]; + } + sum = src_d[sp+w-1]; + for (j = w; j < half_kernel + w; ++j) { + buf[j + half_kernel] = sum; + } + for (j = 0; j <= w-4; j+=4) { + sum = buf[j] * f0, + sum1 = buf[j+1] * f0, + sum2 = buf[j+2] * f0, + sum3 = buf[j+3] * f0; + for (k = 1; k < kernel_size; ++k) { + fk = filter[k]; + sum += buf[k + j] * fk; + sum1 += buf[k + j+1] * fk; + sum2 += buf[k + j+2] * fk; + sum3 += buf[k + j+3] * fk; + } + dst_d[dp+j] = Math.min(sum >> 8, 255); + dst_d[dp+j+1] = Math.min(sum1 >> 8, 255); + dst_d[dp+j+2] = Math.min(sum2 >> 8, 255); + dst_d[dp+j+3] = Math.min(sum3 >> 8, 255); + } + for (; j < w; ++j) { + sum = buf[j] * f0; + for (k = 1; k < kernel_size; ++k) { + sum += buf[k + j] * filter[k]; + } + dst_d[dp+j] = Math.min(sum >> 8, 255); + } + sp += w; + dp += w; + } + + // vert pass + for (i = 0; i < w; ++i) { + sum = dst_d[i]; + for (j = 0; j < half_kernel; ++j) { + buf[j] = sum; + } + k = i; + for (j = 0; j <= h-2; j+=2, k+=w2) { + buf[j+half_kernel] = dst_d[k]; + buf[j+half_kernel+1] = dst_d[k+w]; + } + for (; j < h; ++j, k+=w) { + buf[j+half_kernel] = dst_d[k]; + } + sum = dst_d[(h-1)*w + i]; + for (j = h; j < half_kernel + h; ++j) { + buf[j + half_kernel] = sum; + } + dp = i; + for (j = 0; j <= h-4; j+=4, dp+=w4) { + sum = buf[j] * f0, + sum1 = buf[j+1] * f0, + sum2 = buf[j+2] * f0, + sum3 = buf[j+3] * f0; + for (k = 1; k < kernel_size; ++k) { + fk = filter[k]; + sum += buf[k + j] * fk; + sum1 += buf[k + j+1] * fk; + sum2 += buf[k + j+2] * fk; + sum3 += buf[k + j+3] * fk; + } + dst_d[dp] = Math.min(sum >> 8, 255); + dst_d[dp+w] = Math.min(sum1 >> 8, 255); + dst_d[dp+w2] = Math.min(sum2 >> 8, 255); + dst_d[dp+w3] = Math.min(sum3 >> 8, 255); + } + for (; j < h; ++j, dp+=w) { + sum = buf[j] * f0; + for (k = 1; k < kernel_size; ++k) { + sum += buf[k + j] * filter[k]; + } + dst_d[dp] = Math.min(sum >> 8, 255); + } + } + }; + + var _convol = function(buf, src_d, dst_d, w, h, filter, kernel_size, half_kernel) { + var i=0,j=0,k=0,sp=0,dp=0,sum=0.0,sum1=0.0,sum2=0.0,sum3=0.0,f0=filter[0],fk=0.0; + var w2=w<<1,w3=w*3,w4=w<<2; + // hor pass + for (; i < h; ++i) { + sum = src_d[sp]; + for (j = 0; j < half_kernel; ++j) { + buf[j] = sum; + } + for (j = 0; j <= w-2; j+=2) { + buf[j + half_kernel] = src_d[sp+j]; + buf[j + half_kernel+1] = src_d[sp+j+1]; + } + for (; j < w; ++j) { + buf[j + half_kernel] = src_d[sp+j]; + } + sum = src_d[sp+w-1]; + for (j = w; j < half_kernel + w; ++j) { + buf[j + half_kernel] = sum; + } + for (j = 0; j <= w-4; j+=4) { + sum = buf[j] * f0, + sum1 = buf[j+1] * f0, + sum2 = buf[j+2] * f0, + sum3 = buf[j+3] * f0; + for (k = 1; k < kernel_size; ++k) { + fk = filter[k]; + sum += buf[k + j] * fk; + sum1 += buf[k + j+1] * fk; + sum2 += buf[k + j+2] * fk; + sum3 += buf[k + j+3] * fk; + } + dst_d[dp+j] = sum; + dst_d[dp+j+1] = sum1; + dst_d[dp+j+2] = sum2; + dst_d[dp+j+3] = sum3; + } + for (; j < w; ++j) { + sum = buf[j] * f0; + for (k = 1; k < kernel_size; ++k) { + sum += buf[k + j] * filter[k]; + } + dst_d[dp+j] = sum; + } + sp += w; + dp += w; + } + + // vert pass + for (i = 0; i < w; ++i) { + sum = dst_d[i]; + for (j = 0; j < half_kernel; ++j) { + buf[j] = sum; + } + k = i; + for (j = 0; j <= h-2; j+=2, k+=w2) { + buf[j+half_kernel] = dst_d[k]; + buf[j+half_kernel+1] = dst_d[k+w]; + } + for (; j < h; ++j, k+=w) { + buf[j+half_kernel] = dst_d[k]; + } + sum = dst_d[(h-1)*w + i]; + for (j = h; j < half_kernel + h; ++j) { + buf[j + half_kernel] = sum; + } + dp = i; + for (j = 0; j <= h-4; j+=4, dp+=w4) { + sum = buf[j] * f0, + sum1 = buf[j+1] * f0, + sum2 = buf[j+2] * f0, + sum3 = buf[j+3] * f0; + for (k = 1; k < kernel_size; ++k) { + fk = filter[k]; + sum += buf[k + j] * fk; + sum1 += buf[k + j+1] * fk; + sum2 += buf[k + j+2] * fk; + sum3 += buf[k + j+3] * fk; + } + dst_d[dp] = sum; + dst_d[dp+w] = sum1; + dst_d[dp+w2] = sum2; + dst_d[dp+w3] = sum3; + } + for (; j < h; ++j, dp+=w) { + sum = buf[j] * f0; + for (k = 1; k < kernel_size; ++k) { + sum += buf[k + j] * filter[k]; + } + dst_d[dp] = sum; + } + } + }; + + return { + // TODO: add support for RGB/BGR order + // for raw arrays + grayscale: function(src, w, h, dst, code) { + // this is default image data representation in browser + if (typeof code === "undefined") { code = jsfeat.COLOR_RGBA2GRAY; } + var x=0, y=0, i=0, j=0, ir=0,jr=0; + var coeff_r = 4899, coeff_g = 9617, coeff_b = 1868, cn = 4; + + if(code == jsfeat.COLOR_BGRA2GRAY || code == jsfeat.COLOR_BGR2GRAY) { + coeff_r = 1868; + coeff_b = 4899; + } + if(code == jsfeat.COLOR_RGB2GRAY || code == jsfeat.COLOR_BGR2GRAY) { + cn = 3; + } + var cn2 = cn<<1, cn3 = (cn*3)|0; + + dst.resize(w, h, 1); + var dst_u8 = dst.data; + + for(y = 0; y < h; ++y, j+=w, i+=w*cn) { + for(x = 0, ir = i, jr = j; x <= w-4; x+=4, ir+=cn<<2, jr+=4) { + dst_u8[jr] = (src[ir] * coeff_r + src[ir+1] * coeff_g + src[ir+2] * coeff_b + 8192) >> 14; + dst_u8[jr + 1] = (src[ir+cn] * coeff_r + src[ir+cn+1] * coeff_g + src[ir+cn+2] * coeff_b + 8192) >> 14; + dst_u8[jr + 2] = (src[ir+cn2] * coeff_r + src[ir+cn2+1] * coeff_g + src[ir+cn2+2] * coeff_b + 8192) >> 14; + dst_u8[jr + 3] = (src[ir+cn3] * coeff_r + src[ir+cn3+1] * coeff_g + src[ir+cn3+2] * coeff_b + 8192) >> 14; + } + for (; x < w; ++x, ++jr, ir+=cn) { + dst_u8[jr] = (src[ir] * coeff_r + src[ir+1] * coeff_g + src[ir+2] * coeff_b + 8192) >> 14; + } + } + }, + // derived from CCV library + resample: function(src, dst, nw, nh) { + var h=src.rows,w=src.cols; + if (h > nh && w > nw) { + dst.resize(nw, nh, src.channel); + // using the fast alternative (fix point scale, 0x100 to avoid overflow) + if (src.type&jsfeat.U8_t && dst.type&jsfeat.U8_t && h * w / (nh * nw) < 0x100) { + _resample_u8(src, dst, nw, nh); + } else { + _resample(src, dst, nw, nh); + } + } + }, + + box_blur_gray: function(src, dst, radius, options) { + if (typeof options === "undefined") { options = 0; } + var w=src.cols, h=src.rows, h2=h<<1, w2=w<<1; + var i=0,x=0,y=0,end=0; + var windowSize = ((radius << 1) + 1)|0; + var radiusPlusOne = (radius + 1)|0, radiusPlus2 = (radiusPlusOne+1)|0; + var scale = options&jsfeat.BOX_BLUR_NOSCALE ? 1 : (1.0 / (windowSize*windowSize)); + + var tmp_buff = jsfeat.cache.get_buffer((w*h)<<2); + + var sum=0, dstIndex=0, srcIndex = 0, nextPixelIndex=0, previousPixelIndex=0; + var data_i32 = tmp_buff.i32; // to prevent overflow + var data_u8 = src.data; + var hold=0; + + dst.resize(w, h, src.channel); + + // first pass + // no need to scale + //data_u8 = src.data; + //data_i32 = tmp; + for (y = 0; y < h; ++y) { + dstIndex = y; + sum = radiusPlusOne * data_u8[srcIndex]; + + for(i = (srcIndex+1)|0, end=(srcIndex+radius)|0; i <= end; ++i) { + sum += data_u8[i]; + } + + nextPixelIndex = (srcIndex + radiusPlusOne)|0; + previousPixelIndex = srcIndex; + hold = data_u8[previousPixelIndex]; + for(x = 0; x < radius; ++x, dstIndex += h) { + data_i32[dstIndex] = sum; + sum += data_u8[nextPixelIndex]- hold; + nextPixelIndex ++; + } + for(; x < w-radiusPlus2; x+=2, dstIndex += h2) { + data_i32[dstIndex] = sum; + sum += data_u8[nextPixelIndex]- data_u8[previousPixelIndex]; + + data_i32[dstIndex+h] = sum; + sum += data_u8[nextPixelIndex+1]- data_u8[previousPixelIndex+1]; + + nextPixelIndex +=2; + previousPixelIndex +=2; + } + for(; x < w-radiusPlusOne; ++x, dstIndex += h) { + data_i32[dstIndex] = sum; + sum += data_u8[nextPixelIndex]- data_u8[previousPixelIndex]; + + nextPixelIndex ++; + previousPixelIndex ++; + } + + hold = data_u8[nextPixelIndex-1]; + for(; x < w; ++x, dstIndex += h) { + data_i32[dstIndex] = sum; + + sum += hold- data_u8[previousPixelIndex]; + previousPixelIndex ++; + } + + srcIndex += w; + } + // + // second pass + srcIndex = 0; + //data_i32 = tmp; // this is a transpose + data_u8 = dst.data; + + // dont scale result + if(scale == 1) { + for (y = 0; y < w; ++y) { + dstIndex = y; + sum = radiusPlusOne * data_i32[srcIndex]; + + for(i = (srcIndex+1)|0, end=(srcIndex+radius)|0; i <= end; ++i) { + sum += data_i32[i]; + } + + nextPixelIndex = srcIndex + radiusPlusOne; + previousPixelIndex = srcIndex; + hold = data_i32[previousPixelIndex]; + + for(x = 0; x < radius; ++x, dstIndex += w) { + data_u8[dstIndex] = sum; + sum += data_i32[nextPixelIndex]- hold; + nextPixelIndex ++; + } + for(; x < h-radiusPlus2; x+=2, dstIndex += w2) { + data_u8[dstIndex] = sum; + sum += data_i32[nextPixelIndex]- data_i32[previousPixelIndex]; + + data_u8[dstIndex+w] = sum; + sum += data_i32[nextPixelIndex+1]- data_i32[previousPixelIndex+1]; + + nextPixelIndex +=2; + previousPixelIndex +=2; + } + for(; x < h-radiusPlusOne; ++x, dstIndex += w) { + data_u8[dstIndex] = sum; + + sum += data_i32[nextPixelIndex]- data_i32[previousPixelIndex]; + nextPixelIndex ++; + previousPixelIndex ++; + } + hold = data_i32[nextPixelIndex-1]; + for(; x < h; ++x, dstIndex += w) { + data_u8[dstIndex] = sum; + + sum += hold- data_i32[previousPixelIndex]; + previousPixelIndex ++; + } + + srcIndex += h; + } + } else { + for (y = 0; y < w; ++y) { + dstIndex = y; + sum = radiusPlusOne * data_i32[srcIndex]; + + for(i = (srcIndex+1)|0, end=(srcIndex+radius)|0; i <= end; ++i) { + sum += data_i32[i]; + } + + nextPixelIndex = srcIndex + radiusPlusOne; + previousPixelIndex = srcIndex; + hold = data_i32[previousPixelIndex]; + + for(x = 0; x < radius; ++x, dstIndex += w) { + data_u8[dstIndex] = sum*scale; + sum += data_i32[nextPixelIndex]- hold; + nextPixelIndex ++; + } + for(; x < h-radiusPlus2; x+=2, dstIndex += w2) { + data_u8[dstIndex] = sum*scale; + sum += data_i32[nextPixelIndex]- data_i32[previousPixelIndex]; + + data_u8[dstIndex+w] = sum*scale; + sum += data_i32[nextPixelIndex+1]- data_i32[previousPixelIndex+1]; + + nextPixelIndex +=2; + previousPixelIndex +=2; + } + for(; x < h-radiusPlusOne; ++x, dstIndex += w) { + data_u8[dstIndex] = sum*scale; + + sum += data_i32[nextPixelIndex]- data_i32[previousPixelIndex]; + nextPixelIndex ++; + previousPixelIndex ++; + } + hold = data_i32[nextPixelIndex-1]; + for(; x < h; ++x, dstIndex += w) { + data_u8[dstIndex] = sum*scale; + + sum += hold- data_i32[previousPixelIndex]; + previousPixelIndex ++; + } + + srcIndex += h; + } + } + + jsfeat.cache.put_buffer(tmp_buff); + }, + + gaussian_blur: function(src, dst, kernel_size, sigma) { + if (typeof sigma === "undefined") { sigma = 0.0; } + if (typeof kernel_size === "undefined") { kernel_size = 0; } + kernel_size = kernel_size == 0 ? (Math.max(1, (4.0 * sigma + 1.0 - 1e-8)) * 2 + 1)|0 : kernel_size; + var half_kernel = kernel_size >> 1; + var w = src.cols, h = src.rows; + var data_type = src.type, is_u8 = data_type&jsfeat.U8_t; + + dst.resize(w, h, src.channel); + + var src_d = src.data, dst_d = dst.data; + var buf,filter,buf_sz=(kernel_size + Math.max(h, w))|0; + + var buf_node = jsfeat.cache.get_buffer(buf_sz<<2); + var filt_node = jsfeat.cache.get_buffer(kernel_size<<2); + + if(is_u8) { + buf = buf_node.i32; + filter = filt_node.i32; + } else if(data_type&jsfeat.S32_t) { + buf = buf_node.i32; + filter = filt_node.f32; + } else { + buf = buf_node.f32; + filter = filt_node.f32; + } + + jsfeat.math.get_gaussian_kernel(kernel_size, sigma, filter, data_type); + + if(is_u8) { + _convol_u8(buf, src_d, dst_d, w, h, filter, kernel_size, half_kernel); + } else { + _convol(buf, src_d, dst_d, w, h, filter, kernel_size, half_kernel); + } + + jsfeat.cache.put_buffer(buf_node); + jsfeat.cache.put_buffer(filt_node); + }, + hough_transform: function( img, rho_res, theta_res, threshold ) { + var image = img.data; + + var width = img.cols; + var height = img.rows; + var step = width; + + min_theta = 0.0; + max_theta = Math.PI; + + numangle = Math.round((max_theta - min_theta) / theta_res); + numrho = Math.round(((width + height) * 2 + 1) / rho_res); + irho = 1.0 / rho_res; + + var accum = new Int32Array((numangle+2) * (numrho+2)); //typed arrays are initialized to 0 + var tabSin = new Float32Array(numangle); + var tabCos = new Float32Array(numangle); + + var n=0; + var ang = min_theta; + for(; n < numangle; n++ ) { + tabSin[n] = Math.sin(ang) * irho; + tabCos[n] = Math.cos(ang) * irho; + ang += theta_res; + } + + // stage 1. fill accumulator + for( var i = 0; i < height; i++ ) { + for( var j = 0; j < width; j++ ) { + if( image[i * step + j] != 0 ) { + //console.log(r, (n+1) * (numrho+2) + r+1, tabCos[n], tabSin[n]); + for(var n = 0; n < numangle; n++ ) { + var r = Math.round( j * tabCos[n] + i * tabSin[n] ); + r += (numrho - 1) / 2; + accum[(n+1) * (numrho+2) + r+1] += 1; + } + } + } + } + + // stage 2. find local maximums + //TODO: Consider making a vector class that uses typed arrays + _sort_buf = new Array(); + for(var r = 0; r < numrho; r++ ) { + for(var n = 0; n < numangle; n++ ) { + var base = (n+1) * (numrho+2) + r+1; + if( accum[base] > threshold && + accum[base] > accum[base - 1] && accum[base] >= accum[base + 1] && + accum[base] > accum[base - numrho - 2] && accum[base] >= accum[base + numrho + 2] ) { + _sort_buf.push(base); + } + } + } + + // stage 3. sort the detected lines by accumulator value + _sort_buf.sort(function(l1, l2) { + return accum[l1] > accum[l2] || (accum[l1] == accum[l2] && l1 < l2); + }); + + // stage 4. store the first min(total,linesMax) lines to the output buffer + linesMax = Math.min(numangle*numrho, _sort_buf.length); + scale = 1.0 / (numrho+2); + lines = new Array(); + for( var i = 0; i < linesMax; i++ ) { + var idx = _sort_buf[i]; + var n = Math.floor(idx*scale) - 1; + var r = idx - (n+1)*(numrho+2) - 1; + var lrho = (r - (numrho - 1)*0.5) * rho_res; + var langle = n * theta_res; + lines.push([lrho, langle]); + } + return lines; + }, + // assume we always need it for u8 image + pyrdown: function(src, dst, sx, sy) { + // this is needed for bbf + if (typeof sx === "undefined") { sx = 0; } + if (typeof sy === "undefined") { sy = 0; } + + var w = src.cols, h = src.rows; + var w2 = w >> 1, h2 = h >> 1; + var _w2 = w2 - (sx << 1), _h2 = h2 - (sy << 1); + var x=0,y=0,sptr=sx+sy*w,sline=0,dptr=0,dline=0; + + dst.resize(w2, h2, src.channel); + + var src_d = src.data, dst_d = dst.data; + + for(y = 0; y < _h2; ++y) { + sline = sptr; + dline = dptr; + for(x = 0; x <= _w2-2; x+=2, dline+=2, sline += 4) { + dst_d[dline] = (src_d[sline] + src_d[sline+1] + + src_d[sline+w] + src_d[sline+w+1] + 2) >> 2; + dst_d[dline+1] = (src_d[sline+2] + src_d[sline+3] + + src_d[sline+w+2] + src_d[sline+w+3] + 2) >> 2; + } + for(; x < _w2; ++x, ++dline, sline += 2) { + dst_d[dline] = (src_d[sline] + src_d[sline+1] + + src_d[sline+w] + src_d[sline+w+1] + 2) >> 2; + } + sptr += w << 1; + dptr += w2; + } + }, + + // dst: [gx,gy,...] + scharr_derivatives: function(src, dst) { + var w = src.cols, h = src.rows; + var dstep = w<<1,x=0,y=0,x1=0,a,b,c,d,e,f; + var srow0=0,srow1=0,srow2=0,drow=0; + var trow0,trow1; + + dst.resize(w, h, 2); // 2 channel output gx, gy + + var img = src.data, gxgy=dst.data; + + var buf0_node = jsfeat.cache.get_buffer((w+2)<<2); + var buf1_node = jsfeat.cache.get_buffer((w+2)<<2); + + if(src.type&jsfeat.U8_t || src.type&jsfeat.S32_t) { + trow0 = buf0_node.i32; + trow1 = buf1_node.i32; + } else { + trow0 = buf0_node.f32; + trow1 = buf1_node.f32; + } + + for(; y < h; ++y, srow1+=w) { + srow0 = ((y > 0 ? y-1 : 1)*w)|0; + srow2 = ((y < h-1 ? y+1 : h-2)*w)|0; + drow = (y*dstep)|0; + // do vertical convolution + for(x = 0, x1 = 1; x <= w-2; x+=2, x1+=2) { + a = img[srow0+x], b = img[srow2+x]; + trow0[x1] = ( (a + b)*3 + (img[srow1+x])*10 ); + trow1[x1] = ( b - a ); + // + a = img[srow0+x+1], b = img[srow2+x+1]; + trow0[x1+1] = ( (a + b)*3 + (img[srow1+x+1])*10 ); + trow1[x1+1] = ( b - a ); + } + for(; x < w; ++x, ++x1) { + a = img[srow0+x], b = img[srow2+x]; + trow0[x1] = ( (a + b)*3 + (img[srow1+x])*10 ); + trow1[x1] = ( b - a ); + } + // make border + x = (w + 1)|0; + trow0[0] = trow0[1]; trow0[x] = trow0[w]; + trow1[0] = trow1[1]; trow1[x] = trow1[w]; + // do horizontal convolution, interleave the results and store them + for(x = 0; x <= w-4; x+=4) { + a = trow1[x+2], b = trow1[x+1], c = trow1[x+3], d = trow1[x+4], + e = trow0[x+2], f = trow0[x+3]; + gxgy[drow++] = ( e - trow0[x] ); + gxgy[drow++] = ( (a + trow1[x])*3 + b*10 ); + gxgy[drow++] = ( f - trow0[x+1] ); + gxgy[drow++] = ( (c + b)*3 + a*10 ); + + gxgy[drow++] = ( (trow0[x+4] - e) ); + gxgy[drow++] = ( ((d + a)*3 + c*10) ); + gxgy[drow++] = ( (trow0[x+5] - f) ); + gxgy[drow++] = ( ((trow1[x+5] + c)*3 + d*10) ); + } + for(; x < w; ++x) { + gxgy[drow++] = ( (trow0[x+2] - trow0[x]) ); + gxgy[drow++] = ( ((trow1[x+2] + trow1[x])*3 + trow1[x+1]*10) ); + } + } + jsfeat.cache.put_buffer(buf0_node); + jsfeat.cache.put_buffer(buf1_node); + }, + + // compute gradient using Sobel kernel [1 2 1] * [-1 0 1]^T + // dst: [gx,gy,...] + sobel_derivatives: function(src, dst) { + var w = src.cols, h = src.rows; + var dstep = w<<1,x=0,y=0,x1=0,a,b,c,d,e,f; + var srow0=0,srow1=0,srow2=0,drow=0; + var trow0,trow1; + + dst.resize(w, h, 2); // 2 channel output gx, gy + + var img = src.data, gxgy=dst.data; + + var buf0_node = jsfeat.cache.get_buffer((w+2)<<2); + var buf1_node = jsfeat.cache.get_buffer((w+2)<<2); + + if(src.type&jsfeat.U8_t || src.type&jsfeat.S32_t) { + trow0 = buf0_node.i32; + trow1 = buf1_node.i32; + } else { + trow0 = buf0_node.f32; + trow1 = buf1_node.f32; + } + + for(; y < h; ++y, srow1+=w) { + srow0 = ((y > 0 ? y-1 : 1)*w)|0; + srow2 = ((y < h-1 ? y+1 : h-2)*w)|0; + drow = (y*dstep)|0; + // do vertical convolution + for(x = 0, x1 = 1; x <= w-2; x+=2, x1+=2) { + a = img[srow0+x], b = img[srow2+x]; + trow0[x1] = ( (a + b) + (img[srow1+x]*2) ); + trow1[x1] = ( b - a ); + // + a = img[srow0+x+1], b = img[srow2+x+1]; + trow0[x1+1] = ( (a + b) + (img[srow1+x+1]*2) ); + trow1[x1+1] = ( b - a ); + } + for(; x < w; ++x, ++x1) { + a = img[srow0+x], b = img[srow2+x]; + trow0[x1] = ( (a + b) + (img[srow1+x]*2) ); + trow1[x1] = ( b - a ); + } + // make border + x = (w + 1)|0; + trow0[0] = trow0[1]; trow0[x] = trow0[w]; + trow1[0] = trow1[1]; trow1[x] = trow1[w]; + // do horizontal convolution, interleave the results and store them + for(x = 0; x <= w-4; x+=4) { + a = trow1[x+2], b = trow1[x+1], c = trow1[x+3], d = trow1[x+4], + e = trow0[x+2], f = trow0[x+3]; + gxgy[drow++] = ( e - trow0[x] ); + gxgy[drow++] = ( a + trow1[x] + b*2 ); + gxgy[drow++] = ( f - trow0[x+1] ); + gxgy[drow++] = ( c + b + a*2 ); + + gxgy[drow++] = ( trow0[x+4] - e ); + gxgy[drow++] = ( d + a + c*2 ); + gxgy[drow++] = ( trow0[x+5] - f ); + gxgy[drow++] = ( trow1[x+5] + c + d*2 ); + } + for(; x < w; ++x) { + gxgy[drow++] = ( trow0[x+2] - trow0[x] ); + gxgy[drow++] = ( trow1[x+2] + trow1[x] + trow1[x+1]*2 ); + } + } + jsfeat.cache.put_buffer(buf0_node); + jsfeat.cache.put_buffer(buf1_node); + }, + + // please note: + // dst_(type) size should be cols = src.cols+1, rows = src.rows+1 + compute_integral_image: function(src, dst_sum, dst_sqsum, dst_tilted) { + var w0=src.cols|0,h0=src.rows|0,src_d=src.data; + var w1=(w0+1)|0; + var s=0,s2=0,p=0,pup=0,i=0,j=0,v=0,k=0; + + if(dst_sum && dst_sqsum) { + // fill first row with zeros + for(; i < w1; ++i) { + dst_sum[i] = 0, dst_sqsum[i] = 0; + } + p = (w1+1)|0, pup = 1; + for(i = 0, k = 0; i < h0; ++i, ++p, ++pup) { + s = s2 = 0; + for(j = 0; j <= w0-2; j+=2, k+=2, p+=2, pup+=2) { + v = src_d[k]; + s += v, s2 += v*v; + dst_sum[p] = dst_sum[pup] + s; + dst_sqsum[p] = dst_sqsum[pup] + s2; + + v = src_d[k+1]; + s += v, s2 += v*v; + dst_sum[p+1] = dst_sum[pup+1] + s; + dst_sqsum[p+1] = dst_sqsum[pup+1] + s2; + } + for(; j < w0; ++j, ++k, ++p, ++pup) { + v = src_d[k]; + s += v, s2 += v*v; + dst_sum[p] = dst_sum[pup] + s; + dst_sqsum[p] = dst_sqsum[pup] + s2; + } + } + } else if(dst_sum) { + // fill first row with zeros + for(; i < w1; ++i) { + dst_sum[i] = 0; + } + p = (w1+1)|0, pup = 1; + for(i = 0, k = 0; i < h0; ++i, ++p, ++pup) { + s = 0; + for(j = 0; j <= w0-2; j+=2, k+=2, p+=2, pup+=2) { + s += src_d[k]; + dst_sum[p] = dst_sum[pup] + s; + s += src_d[k+1]; + dst_sum[p+1] = dst_sum[pup+1] + s; + } + for(; j < w0; ++j, ++k, ++p, ++pup) { + s += src_d[k]; + dst_sum[p] = dst_sum[pup] + s; + } + } + } else if(dst_sqsum) { + // fill first row with zeros + for(; i < w1; ++i) { + dst_sqsum[i] = 0; + } + p = (w1+1)|0, pup = 1; + for(i = 0, k = 0; i < h0; ++i, ++p, ++pup) { + s2 = 0; + for(j = 0; j <= w0-2; j+=2, k+=2, p+=2, pup+=2) { + v = src_d[k]; + s2 += v*v; + dst_sqsum[p] = dst_sqsum[pup] + s2; + v = src_d[k+1]; + s2 += v*v; + dst_sqsum[p+1] = dst_sqsum[pup+1] + s2; + } + for(; j < w0; ++j, ++k, ++p, ++pup) { + v = src_d[k]; + s2 += v*v; + dst_sqsum[p] = dst_sqsum[pup] + s2; + } + } + } + + if(dst_tilted) { + // fill first row with zeros + for(i = 0; i < w1; ++i) { + dst_tilted[i] = 0; + } + // diagonal + p = (w1+1)|0, pup = 0; + for(i = 0, k = 0; i < h0; ++i, ++p, ++pup) { + for(j = 0; j <= w0-2; j+=2, k+=2, p+=2, pup+=2) { + dst_tilted[p] = src_d[k] + dst_tilted[pup]; + dst_tilted[p+1] = src_d[k+1] + dst_tilted[pup+1]; + } + for(; j < w0; ++j, ++k, ++p, ++pup) { + dst_tilted[p] = src_d[k] + dst_tilted[pup]; + } + } + // diagonal + p = (w1+w0)|0, pup = w0; + for(i = 0; i < h0; ++i, p+=w1, pup+=w1) { + dst_tilted[p] += dst_tilted[pup]; + } + + for(j = w0-1; j > 0; --j) { + p = j+h0*w1, pup=p-w1; + for(i = h0; i > 0; --i, p-=w1, pup-=w1) { + dst_tilted[p] += dst_tilted[pup] + dst_tilted[pup+1]; + } + } + } + }, + equalize_histogram: function(src, dst) { + var w=src.cols,h=src.rows,src_d=src.data; + + dst.resize(w, h, src.channel); + + var dst_d=dst.data,size=w*h; + var i=0,prev=0,hist0,norm; + + var hist0_node = jsfeat.cache.get_buffer(256<<2); + hist0 = hist0_node.i32; + for(; i < 256; ++i) hist0[i] = 0; + for (i = 0; i < size; ++i) { + ++hist0[src_d[i]]; + } + + prev = hist0[0]; + for (i = 1; i < 256; ++i) { + prev = hist0[i] += prev; + } + + norm = 255 / size; + for (i = 0; i < size; ++i) { + dst_d[i] = (hist0[src_d[i]] * norm + 0.5)|0; + } + jsfeat.cache.put_buffer(hist0_node); + }, + + canny: function(src, dst, low_thresh, high_thresh) { + var w=src.cols,h=src.rows,src_d=src.data; + + dst.resize(w, h, src.channel); + + var dst_d=dst.data; + var i=0,j=0,grad=0,w2=w<<1,_grad=0,suppress=0,f=0,x=0,y=0,s=0; + var tg22x=0,tg67x=0; + + // cache buffers + var dxdy_node = jsfeat.cache.get_buffer((h * w2)<<2); + var buf_node = jsfeat.cache.get_buffer((3 * (w + 2))<<2); + var map_node = jsfeat.cache.get_buffer(((h+2) * (w + 2))<<2); + var stack_node = jsfeat.cache.get_buffer((h * w)<<2); + + + var buf = buf_node.i32; + var map = map_node.i32; + var stack = stack_node.i32; + var dxdy = dxdy_node.i32; + var dxdy_m = new jsfeat.matrix_t(w, h, jsfeat.S32C2_t, dxdy_node.data); + var row0=1,row1=(w+2+1)|0,row2=(2*(w+2)+1)|0,map_w=(w+2)|0,map_i=(map_w+1)|0,stack_i=0; + + this.sobel_derivatives(src, dxdy_m); + + if(low_thresh > high_thresh) { + i = low_thresh; + low_thresh = high_thresh; + high_thresh = i; + } + + i = (3 * (w + 2))|0; + while(--i>=0) { + buf[i] = 0; + } + + i = ((h+2) * (w + 2))|0; + while(--i>=0) { + map[i] = 0; + } + + for (; j < w; ++j, grad+=2) { + //buf[row1+j] = Math.abs(dxdy[grad]) + Math.abs(dxdy[grad+1]); + x = dxdy[grad], y = dxdy[grad+1]; + //buf[row1+j] = x*x + y*y; + buf[row1+j] = ((x ^ (x >> 31)) - (x >> 31)) + ((y ^ (y >> 31)) - (y >> 31)); + } + + for(i=1; i <= h; ++i, grad+=w2) { + if(i == h) { + j = row2+w; + while(--j>=row2) { + buf[j] = 0; + } + } else { + for (j = 0; j < w; j++) { + //buf[row2+j] = Math.abs(dxdy[grad+(j<<1)]) + Math.abs(dxdy[grad+(j<<1)+1]); + x = dxdy[grad+(j<<1)], y = dxdy[grad+(j<<1)+1]; + //buf[row2+j] = x*x + y*y; + buf[row2+j] = ((x ^ (x >> 31)) - (x >> 31)) + ((y ^ (y >> 31)) - (y >> 31)); + } + } + _grad = (grad - w2)|0; + map[map_i-1] = 0; + suppress = 0; + for(j = 0; j < w; ++j, _grad+=2) { + f = buf[row1+j]; + if (f > low_thresh) { + x = dxdy[_grad]; + y = dxdy[_grad+1]; + s = x ^ y; + // seems ot be faster than Math.abs + x = ((x ^ (x >> 31)) - (x >> 31))|0; + y = ((y ^ (y >> 31)) - (y >> 31))|0; + //x * tan(22.5) x * tan(67.5) == 2 * x + x * tan(22.5) + tg22x = x * 13573; + tg67x = tg22x + ((x + x) << 15); + y <<= 15; + if (y < tg22x) { + if (f > buf[row1+j-1] && f >= buf[row1+j+1]) { + if (f > high_thresh && !suppress && map[map_i+j-map_w] != 2) { + map[map_i+j] = 2; + suppress = 1; + stack[stack_i++] = map_i + j; + } else { + map[map_i+j] = 1; + } + continue; + } + } else if (y > tg67x) { + if (f > buf[row0+j] && f >= buf[row2+j]) { + if (f > high_thresh && !suppress && map[map_i+j-map_w] != 2) { + map[map_i+j] = 2; + suppress = 1; + stack[stack_i++] = map_i + j; + } else { + map[map_i+j] = 1; + } + continue; + } + } else { + s = s < 0 ? -1 : 1; + if (f > buf[row0+j-s] && f > buf[row2+j+s]) { + if (f > high_thresh && !suppress && map[map_i+j-map_w] != 2) { + map[map_i+j] = 2; + suppress = 1; + stack[stack_i++] = map_i + j; + } else { + map[map_i+j] = 1; + } + continue; + } + } + } + map[map_i+j] = 0; + suppress = 0; + } + map[map_i+w] = 0; + map_i += map_w; + j = row0; + row0 = row1; + row1 = row2; + row2 = j; + } + + j = map_i - map_w - 1; + for(i = 0; i < map_w; ++i, ++j) { + map[j] = 0; + } + // path following + while(stack_i > 0) { + map_i = stack[--stack_i]; + map_i -= map_w+1; + if(map[map_i] == 1) map[map_i] = 2, stack[stack_i++] = map_i; + map_i += 1; + if(map[map_i] == 1) map[map_i] = 2, stack[stack_i++] = map_i; + map_i += 1; + if(map[map_i] == 1) map[map_i] = 2, stack[stack_i++] = map_i; + map_i += map_w; + if(map[map_i] == 1) map[map_i] = 2, stack[stack_i++] = map_i; + map_i -= 2; + if(map[map_i] == 1) map[map_i] = 2, stack[stack_i++] = map_i; + map_i += map_w; + if(map[map_i] == 1) map[map_i] = 2, stack[stack_i++] = map_i; + map_i += 1; + if(map[map_i] == 1) map[map_i] = 2, stack[stack_i++] = map_i; + map_i += 1; + if(map[map_i] == 1) map[map_i] = 2, stack[stack_i++] = map_i; + } + + map_i = map_w + 1; + row0 = 0; + for(i = 0; i < h; ++i, map_i+=map_w) { + for(j = 0; j < w; ++j) { + dst_d[row0++] = (map[map_i+j] == 2) * 0xff; + } + } + + // free buffers + jsfeat.cache.put_buffer(dxdy_node); + jsfeat.cache.put_buffer(buf_node); + jsfeat.cache.put_buffer(map_node); + jsfeat.cache.put_buffer(stack_node); + }, + // transform is 3x3 matrix_t + warp_perspective: function(src, dst, transform, fill_value) { + if (typeof fill_value === "undefined") { fill_value = 0; } + var src_width=src.cols|0, src_height=src.rows|0, dst_width=dst.cols|0, dst_height=dst.rows|0; + var src_d=src.data, dst_d=dst.data; + var x=0,y=0,off=0,ixs=0,iys=0,xs=0.0,ys=0.0,xs0=0.0,ys0=0.0,ws=0.0,sc=0.0,a=0.0,b=0.0,p0=0.0,p1=0.0; + var td=transform.data; + var m00=td[0],m01=td[1],m02=td[2], + m10=td[3],m11=td[4],m12=td[5], + m20=td[6],m21=td[7],m22=td[8]; + + for(var dptr = 0; y < dst_height; ++y) { + xs0 = m01 * y + m02, + ys0 = m11 * y + m12, + ws = m21 * y + m22; + for(x = 0; x < dst_width; ++x, ++dptr, xs0+=m00, ys0+=m10, ws+=m20) { + sc = 1.0 / ws; + xs = xs0 * sc, ys = ys0 * sc; + ixs = xs | 0, iys = ys | 0; + + if(xs > 0 && ys > 0 && ixs < (src_width - 1) && iys < (src_height - 1)) { + a = Math.max(xs - ixs, 0.0); + b = Math.max(ys - iys, 0.0); + off = (src_width*iys + ixs)|0; + + p0 = src_d[off] + a * (src_d[off+1] - src_d[off]); + p1 = src_d[off+src_width] + a * (src_d[off+src_width+1] - src_d[off+src_width]); + + dst_d[dptr] = p0 + b * (p1 - p0); + } + else dst_d[dptr] = fill_value; + } + } + }, + // transform is 3x3 or 2x3 matrix_t only first 6 values referenced + warp_affine: function(src, dst, transform, fill_value) { + if (typeof fill_value === "undefined") { fill_value = 0; } + var src_width=src.cols, src_height=src.rows, dst_width=dst.cols, dst_height=dst.rows; + var src_d=src.data, dst_d=dst.data; + var x=0,y=0,off=0,ixs=0,iys=0,xs=0.0,ys=0.0,a=0.0,b=0.0,p0=0.0,p1=0.0; + var td=transform.data; + var m00=td[0],m01=td[1],m02=td[2], + m10=td[3],m11=td[4],m12=td[5]; + + for(var dptr = 0; y < dst_height; ++y) { + xs = m01 * y + m02; + ys = m11 * y + m12; + for(x = 0; x < dst_width; ++x, ++dptr, xs+=m00, ys+=m10) { + ixs = xs | 0; iys = ys | 0; + + if(ixs >= 0 && iys >= 0 && ixs < (src_width - 1) && iys < (src_height - 1)) { + a = xs - ixs; + b = ys - iys; + off = src_width*iys + ixs; + + p0 = src_d[off] + a * (src_d[off+1] - src_d[off]); + p1 = src_d[off+src_width] + a * (src_d[off+src_width+1] - src_d[off+src_width]); + + dst_d[dptr] = p0 + b * (p1 - p0); + } + else dst_d[dptr] = fill_value; + } + } + }, + + // Basic RGB Skin detection filter + // from http://popscan.blogspot.fr/2012/08/skin-detection-in-digital-images.html + skindetector: function(src,dst) { + var r,g,b,j; + var i = src.width*src.height; + while(i--){ + j = i*4; + r = src.data[j]; + g = src.data[j+1]; + b = src.data[j+2]; + if((r>95)&&(g>40)&&(b>20) + &&(r>g)&&(r>b) + &&(r-Math.min(g,b)>15) + &&(Math.abs(r-g)>15)){ + dst[i] = 255; + } else { + dst[i] = 0; + } + } + } + }; + })(); + + global.imgproc = imgproc; + +})(jsfeat); +/** + * @author Eugene Zatepyakin / http://inspirit.ru/ + * + * This is FAST corner detector, contributed to OpenCV by the author, Edward Rosten. + */ + +/* +The references are: + * Machine learning for high-speed corner detection, + E. Rosten and T. Drummond, ECCV 2006 + * Faster and better: A machine learning approach to corner detection + E. Rosten, R. Porter and T. Drummond, PAMI, 2009 +*/ + +(function(global) { + "use strict"; + // + var fast_corners = (function() { + + var offsets16 = new Int32Array([0, 3, 1, 3, 2, 2, 3, 1, 3, 0, 3, -1, 2, -2, 1, -3, 0, -3, -1, -3, -2, -2, -3, -1, -3, 0, -3, 1, -2, 2, -1, 3]); + + var threshold_tab = new Uint8Array(512); + var pixel_off = new Int32Array(25); + var score_diff = new Int32Array(25); + + // private functions + var _cmp_offsets = function(pixel, step, pattern_size) { + var k = 0; + var offsets = offsets16; + for( ; k < pattern_size; ++k ) { + pixel[k] = offsets[k<<1] + offsets[(k<<1)+1] * step; + } + for( ; k < 25; ++k ) { + pixel[k] = pixel[k - pattern_size]; + } + }, + + _cmp_score_16 = function(src, off, pixel, d, threshold) { + var N = 25, k = 0, v = src[off]; + var a0 = threshold,a=0,b0=0,b=0; + + for( ; k < N; ++k ) { + d[k] = v - src[off+pixel[k]]; + } + + for( k = 0; k < 16; k += 2 ) { + a = Math.min(d[k+1], d[k+2]); + a = Math.min(a, d[k+3]); + + if( a <= a0 ) continue; + + a = Math.min(a, d[k+4]); + a = Math.min(a, d[k+5]); + a = Math.min(a, d[k+6]); + a = Math.min(a, d[k+7]); + a = Math.min(a, d[k+8]); + a0 = Math.max(a0, Math.min(a, d[k])); + a0 = Math.max(a0, Math.min(a, d[k+9])); + } + + b0 = -a0; + for( k = 0; k < 16; k += 2 ) { + b = Math.max(d[k+1], d[k+2]); + b = Math.max(b, d[k+3]); + b = Math.max(b, d[k+4]); + b = Math.max(b, d[k+5]); + + if( b >= b0 ) continue; + b = Math.max(b, d[k+6]); + b = Math.max(b, d[k+7]); + b = Math.max(b, d[k+8]); + b0 = Math.min(b0, Math.max(b, d[k])); + b0 = Math.min(b0, Math.max(b, d[k+9])); + } + + return -b0-1; + }; + + var _threshold = 20; + + return { + set_threshold: function(threshold) { + _threshold = Math.min(Math.max(threshold, 0), 255); + for (var i = -255; i <= 255; ++i) { + threshold_tab[(i + 255)] = (i < -_threshold ? 1 : (i > _threshold ? 2 : 0)); + } + return _threshold; + }, + + detect: function(src, corners, border) { + if (typeof border === "undefined") { border = 3; } + + var K = 8, N = 25; + var img = src.data, w = src.cols, h = src.rows; + var i=0, j=0, k=0, vt=0, x=0, m3=0; + var buf_node = jsfeat.cache.get_buffer(3 * w); + var cpbuf_node = jsfeat.cache.get_buffer(((w+1)*3)<<2); + var buf = buf_node.u8; + var cpbuf = cpbuf_node.i32; + var pixel = pixel_off; + var sd = score_diff; + var sy = Math.max(3, border); + var ey = Math.min((h-2), (h-border)); + var sx = Math.max(3, border); + var ex = Math.min((w - 3), (w - border)); + var _count = 0, corners_cnt = 0, pt; + var score_func = _cmp_score_16; + var thresh_tab = threshold_tab; + var threshold = _threshold; + + var v=0,tab=0,d=0,ncorners=0,cornerpos=0,curr=0,ptr=0,prev=0,pprev=0; + var jp1=0,jm1=0,score=0; + + _cmp_offsets(pixel, w, 16); + + // local vars are faster? + var pixel0 = pixel[0]; + var pixel1 = pixel[1]; + var pixel2 = pixel[2]; + var pixel3 = pixel[3]; + var pixel4 = pixel[4]; + var pixel5 = pixel[5]; + var pixel6 = pixel[6]; + var pixel7 = pixel[7]; + var pixel8 = pixel[8]; + var pixel9 = pixel[9]; + var pixel10 = pixel[10]; + var pixel11 = pixel[11]; + var pixel12 = pixel[12]; + var pixel13 = pixel[13]; + var pixel14 = pixel[14]; + var pixel15 = pixel[15]; + + for(i = 0; i < w*3; ++i) { + buf[i] = 0; + } + + for(i = sy; i < ey; ++i) { + ptr = ((i * w) + sx)|0; + m3 = (i - 3)%3; + curr = (m3*w)|0; + cornerpos = (m3*(w+1))|0; + for (j = 0; j < w; ++j) buf[curr+j] = 0; + ncorners = 0; + + if( i < (ey - 1) ) { + j = sx; + + for( ; j < ex; ++j, ++ptr ) { + v = img[ptr]; + tab = ( - v + 255 ); + d = ( thresh_tab[tab+img[ptr+pixel0]] | thresh_tab[tab+img[ptr+pixel8]] ); + + if( d == 0 ) { + continue; + } + + d &= ( thresh_tab[tab+img[ptr+pixel2]] | thresh_tab[tab+img[ptr+pixel10]] ); + d &= ( thresh_tab[tab+img[ptr+pixel4]] | thresh_tab[tab+img[ptr+pixel12]] ); + d &= ( thresh_tab[tab+img[ptr+pixel6]] | thresh_tab[tab+img[ptr+pixel14]] ); + + if( d == 0 ) { + continue; + } + + d &= ( thresh_tab[tab+img[ptr+pixel1]] | thresh_tab[tab+img[ptr+pixel9]] ); + d &= ( thresh_tab[tab+img[ptr+pixel3]] | thresh_tab[tab+img[ptr+pixel11]] ); + d &= ( thresh_tab[tab+img[ptr+pixel5]] | thresh_tab[tab+img[ptr+pixel13]] ); + d &= ( thresh_tab[tab+img[ptr+pixel7]] | thresh_tab[tab+img[ptr+pixel15]] ); + + if( d & 1 ) { + vt = (v - threshold); + _count = 0; + + for( k = 0; k < N; ++k ) { + x = img[(ptr+pixel[k])]; + if(x < vt) { + ++_count; + if( _count > K ) { + ++ncorners; + cpbuf[cornerpos+ncorners] = j; + buf[curr+j] = score_func(img, ptr, pixel, sd, threshold); + break; + } + } + else { + _count = 0; + } + } + } + + if( d & 2 ) { + vt = (v + threshold); + _count = 0; + + for( k = 0; k < N; ++k ) { + x = img[(ptr+pixel[k])]; + if(x > vt) { + ++_count; + if( _count > K ) { + ++ncorners; + cpbuf[cornerpos+ncorners] = j; + buf[curr+j] = score_func(img, ptr, pixel, sd, threshold); + break; + } + } + else { + _count = 0; + } + } + } + } + } + + cpbuf[cornerpos+w] = ncorners; + + if ( i == sy ) { + continue; + } + + m3 = (i - 4 + 3)%3; + prev = (m3*w)|0; + cornerpos = (m3*(w+1))|0; + m3 = (i - 5 + 3)%3; + pprev = (m3*w)|0; + + ncorners = cpbuf[cornerpos+w]; + + for( k = 0; k < ncorners; ++k ) { + j = cpbuf[cornerpos+k]; + jp1 = (j+1)|0; + jm1 = (j-1)|0; + score = buf[prev+j]; + if( (score > buf[prev+jp1] && score > buf[prev+jm1] && + score > buf[pprev+jm1] && score > buf[pprev+j] && score > buf[pprev+jp1] && + score > buf[curr+jm1] && score > buf[curr+j] && score > buf[curr+jp1]) ) { + // save corner + pt = corners[corners_cnt]; + pt.x = j, pt.y = (i-1), pt.score = score; + corners_cnt++; + } + } + } // y loop + jsfeat.cache.put_buffer(buf_node); + jsfeat.cache.put_buffer(cpbuf_node); + return corners_cnt; + } + }; + })(); + + global.fast_corners = fast_corners; + fast_corners.set_threshold(20); // set default + +})(jsfeat); +/** + * @author Eugene Zatepyakin / http://inspirit.ru/ + * + * Copyright 2007 Computer Vision Lab, + * Ecole Polytechnique Federale de Lausanne (EPFL), Switzerland. + * @author Vincent Lepetit (http://cvlab.epfl.ch/~lepetit) + */ + +(function(global) { + "use strict"; + // + + var yape06 = (function() { + + var compute_laplacian = function(src, dst, w, h, Dxx, Dyy, sx,sy, ex,ey) { + var y=0,x=0,yrow=(sy*w+sx)|0,row=yrow; + + for(y = sy; y < ey; ++y, yrow+=w, row = yrow) { + for(x = sx; x < ex; ++x, ++row) { + dst[row] = -4 * src[row] + src[row+Dxx] + src[row-Dxx] + src[row+Dyy] + src[row-Dyy]; + } + } + }; + + var hessian_min_eigen_value = function(src, off, tr, Dxx, Dyy, Dxy, Dyx) { + var Ixx = -2 * src[off] + src[off + Dxx] + src[off - Dxx]; + var Iyy = -2 * src[off] + src[off + Dyy] + src[off - Dyy]; + var Ixy = src[off + Dxy] + src[off - Dxy] - src[off + Dyx] - src[off - Dyx]; + var sqrt_delta = ( Math.sqrt(((Ixx - Iyy) * (Ixx - Iyy) + 4 * Ixy * Ixy) ) )|0; + + return Math.min(Math.abs(tr - sqrt_delta), Math.abs(-(tr + sqrt_delta))); + }; + + return { + + laplacian_threshold: 30, + min_eigen_value_threshold: 25, + + detect: function(src, points, border) { + if (typeof border === "undefined") { border = 5; } + var x=0,y=0; + var w=src.cols, h=src.rows, srd_d=src.data; + var Dxx = 5, Dyy = (5 * w)|0; + var Dxy = (3 + 3 * w)|0, Dyx = (3 - 3 * w)|0; + var lap_buf = jsfeat.cache.get_buffer((w*h)<<2); + var laplacian = lap_buf.i32; + var lv=0, row=0,rowx=0,min_eigen_value=0,pt; + var number_of_points = 0; + var lap_thresh = this.laplacian_threshold; + var eigen_thresh = this.min_eigen_value_threshold; + + var sx = Math.max(5, border)|0; + var sy = Math.max(3, border)|0; + var ex = Math.min(w-5, w-border)|0; + var ey = Math.min(h-3, h-border)|0; + + x = w*h; + while(--x>=0) {laplacian[x]=0;} + compute_laplacian(srd_d, laplacian, w, h, Dxx, Dyy, sx,sy, ex,ey); + + row = (sy*w+sx)|0; + for(y = sy; y < ey; ++y, row += w) { + for(x = sx, rowx=row; x < ex; ++x, ++rowx) { + + lv = laplacian[rowx]; + if ((lv < -lap_thresh && + lv < laplacian[rowx - 1] && lv < laplacian[rowx + 1] && + lv < laplacian[rowx - w] && lv < laplacian[rowx + w] && + lv < laplacian[rowx - w - 1] && lv < laplacian[rowx + w - 1] && + lv < laplacian[rowx - w + 1] && lv < laplacian[rowx + w + 1]) + || + (lv > lap_thresh && + lv > laplacian[rowx - 1] && lv > laplacian[rowx + 1] && + lv > laplacian[rowx - w] && lv > laplacian[rowx + w] && + lv > laplacian[rowx - w - 1] && lv > laplacian[rowx + w - 1] && + lv > laplacian[rowx - w + 1] && lv > laplacian[rowx + w + 1]) + ) { + + min_eigen_value = hessian_min_eigen_value(srd_d, rowx, lv, Dxx, Dyy, Dxy, Dyx); + if (min_eigen_value > eigen_thresh) { + pt = points[number_of_points]; + pt.x = x, pt.y = y, pt.score = min_eigen_value; + ++number_of_points; + ++x, ++rowx; // skip next pixel since this is maxima in 3x3 + } + } + } + } + + jsfeat.cache.put_buffer(lap_buf); + + return number_of_points; + } + + }; + })(); + + global.yape06 = yape06; + +})(jsfeat); +/** + * @author Eugene Zatepyakin / http://inspirit.ru/ + * + * Copyright 2007 Computer Vision Lab, + * Ecole Polytechnique Federale de Lausanne (EPFL), Switzerland. + */ + +(function(global) { + "use strict"; + // + + var yape = (function() { + + var precompute_directions = function(step, dirs, R) { + var i = 0; + var x, y; + + x = R; + for(y = 0; y < x; y++, i++) + { + x = (Math.sqrt((R * R - y * y)) + 0.5)|0; + dirs[i] = (x + step * y); + } + for(x-- ; x < y && x >= 0; x--, i++) + { + y = (Math.sqrt((R * R - x * x)) + 0.5)|0; + dirs[i] = (x + step * y); + } + for( ; -x < y; x--, i++) + { + y = (Math.sqrt((R * R - x * x)) + 0.5)|0; + dirs[i] = (x + step * y); + } + for(y-- ; y >= 0; y--, i++) + { + x = (-Math.sqrt((R * R - y * y)) - 0.5)|0; + dirs[i] = (x + step * y); + } + for(; y > x; y--, i++) + { + x = (-Math.sqrt((R * R - y * y)) - 0.5)|0; + dirs[i] = (x + step * y); + } + for(x++ ; x <= 0; x++, i++) + { + y = (-Math.sqrt((R * R - x * x)) - 0.5)|0; + dirs[i] = (x + step * y); + } + for( ; x < -y; x++, i++) + { + y = (-Math.sqrt((R * R - x * x)) - 0.5)|0; + dirs[i] = (x + step * y); + } + for(y++ ; y < 0; y++, i++) + { + x = (Math.sqrt((R * R - y * y)) + 0.5)|0; + dirs[i] = (x + step * y); + } + + dirs[i] = dirs[0]; + dirs[i + 1] = dirs[1]; + return i; + }; + + var third_check = function (Sb, off, step) { + var n = 0; + if(Sb[off+1] != 0) n++; + if(Sb[off-1] != 0) n++; + if(Sb[off+step] != 0) n++; + if(Sb[off+step+1] != 0) n++; + if(Sb[off+step-1] != 0) n++; + if(Sb[off-step] != 0) n++; + if(Sb[off-step+1] != 0) n++; + if(Sb[off-step-1] != 0) n++; + + return n; + }; + + var is_local_maxima = function(p, off, v, step, neighborhood) { + var x, y; + + if (v > 0) { + off -= step*neighborhood; + for (y= -neighborhood; y<=neighborhood; ++y) { + for (x= -neighborhood; x<=neighborhood; ++x) { + if (p[off+x] > v) return false; + } + off += step; + } + } else { + off -= step*neighborhood; + for (y= -neighborhood; y<=neighborhood; ++y) { + for (x= -neighborhood; x<=neighborhood; ++x) { + if (p[off+x] < v) return false; + } + off += step; + } + } + return true; + }; + + var perform_one_point = function(I, x, Scores, Im, Ip, dirs, opposite, dirs_nb) { + var score = 0; + var a = 0, b = (opposite - 1)|0; + var A=0, B0=0, B1=0, B2=0; + var state=0; + + // WE KNOW THAT NOT(A ~ I0 & B1 ~ I0): + A = I[x+dirs[a]]; + if ((A <= Ip)) { + if ((A >= Im)) { // A ~ I0 + B0 = I[x+dirs[b]]; + if ((B0 <= Ip)) { + if ((B0 >= Im)) { Scores[x] = 0; return; } + else { + b++; B1 = I[x+dirs[b]]; + if ((B1 > Ip)) { + b++; B2 = I[x+dirs[b]]; + if ((B2 > Ip)) state = 3; + else if ((B2 < Im)) state = 6; + else { Scores[x] = 0; return; } // A ~ I0, B2 ~ I0 + } + else/* if ((B1 < Im))*/ { + b++; B2 = I[x+dirs[b]]; + if ((B2 > Ip)) state = 7; + else if ((B2 < Im)) state = 2; + else { Scores[x] = 0; return; } // A ~ I0, B2 ~ I0 + } + //else { Scores[x] = 0; return; } // A ~ I0, B1 ~ I0 + } + } + else { // B0 < I0 + b++; B1 = I[x+dirs[b]]; + if ((B1 > Ip)) { + b++; B2 = I[x+dirs[b]]; + if ((B2 > Ip)) state = 3; + else if ((B2 < Im)) state = 6; + else { Scores[x] = 0; return; } // A ~ I0, B2 ~ I0 + } + else if ((B1 < Im)) { + b++; B2 = I[x+dirs[b]]; + if ((B2 > Ip)) state = 7; + else if ((B2 < Im)) state = 2; + else { Scores[x] = 0; return; } // A ~ I0, B2 ~ I0 + } + else { Scores[x] = 0; return; } // A ~ I0, B1 ~ I0 + } + } + else { // A > I0 + B0 = I[x+dirs[b]]; + if ((B0 > Ip)) { Scores[x] = 0; return; } + b++; B1 = I[x+dirs[b]]; + if ((B1 > Ip)) { Scores[x] = 0; return; } + b++; B2 = I[x+dirs[b]]; + if ((B2 > Ip)) { Scores[x] = 0; return; } + state = 1; + } + } + else // A < I0 + { + B0 = I[x+dirs[b]]; + if ((B0 < Im)) { Scores[x] = 0; return; } + b++; B1 = I[x+dirs[b]]; + if ((B1 < Im)) { Scores[x] = 0; return; } + b++; B2 = I[x+dirs[b]]; + if ((B2 < Im)) { Scores[x] = 0; return; } + state = 0; + } + + for(a = 1; a <= opposite; a++) + { + A = I[x+dirs[a]]; + + switch(state) + { + case 0: + if ((A > Ip)) { + B1 = B2; b++; B2 = I[x+dirs[b]]; + if ((B2 < Im)) { Scores[x] = 0; return; } + { score -= A + B1; state = 0; break; } + } + if ((A < Im)) { + if ((B1 > Ip)) { Scores[x] = 0; return; } + if ((B2 > Ip)) { Scores[x] = 0; return; } + B1 = B2; b++; B2 = I[x+dirs[b]]; + if ((B2 > Ip)) { Scores[x] = 0; return; } + { score -= A + B1; state = 8; break; } + } + // A ~ I0 + if ((B1 <= Ip)) { Scores[x] = 0; return; } + if ((B2 <= Ip)) { Scores[x] = 0; return; } + B1 = B2; b++; B2 = I[x+dirs[b]]; + if ((B2 > Ip)) { score -= A + B1; state = 3; break; }; + if ((B2 < Im)) { score -= A + B1; state = 6; break; }; + { Scores[x] = 0; return; } + + case 1: + if ((A < Im)) { + B1 = B2; b++; B2 = I[x+dirs[b]]; + if ((B2 > Ip)) { Scores[x] = 0; return; } + { score -= A + B1; state = 1; break; } + } + if ((A > Ip)) { + if ((B1 < Im)) { Scores[x] = 0; return; } + if ((B2 < Im)) { Scores[x] = 0; return; } + B1 = B2; b++; B2 = I[x+dirs[b]]; + if ((B2 < Im)) { Scores[x] = 0; return; } + { score -= A + B1; state = 9; break; } + } + // A ~ I0 + if ((B1 >= Im)) { Scores[x] = 0; return; } + if ((B2 >= Im)) { Scores[x] = 0; return; } + B1 = B2; b++; B2 = I[x+dirs[b]]; + if ((B2 < Im)) { score -= A + B1; state = 2; break; }; + if ((B2 > Ip)) { score -= A + B1; state = 7; break; }; + { Scores[x] = 0; return; } + + case 2: + if ((A > Ip)) { Scores[x] = 0; return; } + B1 = B2; b++; B2 = I[x+dirs[b]]; + if ((A < Im)) + { + if ((B2 > Ip)) { Scores[x] = 0; return; } + { score -= A + B1; state = 4; break; } + } + // A ~ I0 + if ((B2 > Ip)) { score -= A + B1; state = 7; break; }; + if ((B2 < Im)) { score -= A + B1; state = 2; break; }; + { Scores[x] = 0; return; } // A ~ I0, B2 ~ I0 + + case 3: + if ((A < Im)) { Scores[x] = 0; return; } + B1 = B2; b++; B2 = I[x+dirs[b]]; + if ((A > Ip)) { + if ((B2 < Im)) { Scores[x] = 0; return; } + { score -= A + B1; state = 5; break; } + } + // A ~ I0 + if ((B2 > Ip)) { score -= A + B1; state = 3; break; }; + if ((B2 < Im)) { score -= A + B1; state = 6; break; }; + { Scores[x] = 0; return; } + + case 4: + if ((A > Ip)) { Scores[x] = 0; return; } + if ((A < Im)) { + B1 = B2; b++; B2 = I[x+dirs[b]]; + if ((B2 > Ip)) { Scores[x] = 0; return; } + { score -= A + B1; state = 1; break; } + } + if ((B2 >= Im)) { Scores[x] = 0; return; } + B1 = B2; b++; B2 = I[x+dirs[b]]; + if ((B2 < Im)) { score -= A + B1; state = 2; break; }; + if ((B2 > Ip)) { score -= A + B1; state = 7; break; }; + { Scores[x] = 0; return; } + + case 5: + if ((A < Im)) { Scores[x] = 0; return; } + if ((A > Ip)) { + B1 = B2; b++; B2 = I[x+dirs[b]]; + if ((B2 < Im)) { Scores[x] = 0; return; } + { score -= A + B1; state = 0; break; } + } + // A ~ I0 + if ((B2 <= Ip)) { Scores[x] = 0; return; } + B1 = B2; b++; B2 = I[x+dirs[b]]; + if ((B2 > Ip)) { score -= A + B1; state = 3; break; }; + if ((B2 < Im)) { score -= A + B1; state = 6; break; }; + { Scores[x] = 0; return; } + + case 7: + if ((A > Ip)) { Scores[x] = 0; return; } + if ((A < Im)) { Scores[x] = 0; return; } + B1 = B2; b++; B2 = I[x+dirs[b]]; + // A ~ I0 + if ((B2 > Ip)) { score -= A + B1; state = 3; break; }; + if ((B2 < Im)) { score -= A + B1; state = 6; break; }; + { Scores[x] = 0; return; } // A ~ I0, B2 ~ I0 + + case 6: + if ((A > Ip)) { Scores[x] = 0; return; } + if ((A < Im)) { Scores[x] = 0; return; } + B1 = B2; b++; B2 = I[x+dirs[b]]; + // A ~ I0 + if ((B2 < Im)) { score -= A + B1; state = 2; break; }; + if ((B2 > Ip)) { score -= A + B1; state = 7; break; }; + { Scores[x] = 0; return; } // A ~ I0, B2 ~ I0 + + case 8: + if ((A > Ip)) { + if ((B2 < Im)) { Scores[x] = 0; return; } + B1 = B2; b++; B2 = I[x+dirs[b]]; + if ((B2 < Im)) { Scores[x] = 0; return; } + { score -= A + B1; state = 9; break; } + } + if ((A < Im)) { + B1 = B2; b++; B2 = I[x+dirs[b]]; + if ((B2 > Ip)) { Scores[x] = 0; return; } + { score -= A + B1; state = 1; break; } + } + { Scores[x] = 0; return; } + + case 9: + if ((A < Im)) { + if ((B2 > Ip)) { Scores[x] = 0; return; } + B1 = B2; b++; B2 = I[x+dirs[b]]; + if ((B2 > Ip)) { Scores[x] = 0; return; } + { score -= A + B1; state = 8; break; } + } + if ((A > Ip)) { + B1 = B2; b++; B2 = I[x+dirs[b]]; + if ((B2 < Im)) { Scores[x] = 0; return; } + { score -= A + B1; state = 0; break; } + } + { Scores[x] = 0; return; } + + default: + //"PB default"; + break; + } // switch(state) + } // for(a...) + + Scores[x] = (score + dirs_nb * I[x]); + }; + + var lev_table_t = (function () { + function lev_table_t(w, h, r) { + this.dirs = new Int32Array(1024); + this.dirs_count = precompute_directions(w, this.dirs, r)|0; + this.scores = new Int32Array(w*h); + this.radius = r|0; + } + return lev_table_t; + })(); + + return { + + level_tables: [], + tau: 7, + + init: function(width, height, radius, pyramid_levels) { + if (typeof pyramid_levels === "undefined") { pyramid_levels = 1; } + var i; + radius = Math.min(radius, 7); + radius = Math.max(radius, 3); + for(i = 0; i < pyramid_levels; ++i) { + this.level_tables[i] = new lev_table_t(width>>i, height>>i, radius); + } + }, + + detect: function(src, points, border) { + if (typeof border === "undefined") { border = 4; } + var t = this.level_tables[0]; + var R = t.radius|0, Rm1 = (R-1)|0; + var dirs = t.dirs; + var dirs_count = t.dirs_count|0; + var opposite = dirs_count >> 1; + var img = src.data, w=src.cols|0, h=src.rows|0,hw=w>>1; + var scores = t.scores; + var x=0,y=0,row=0,rowx=0,ip=0,im=0,abs_score=0, score=0; + var tau = this.tau|0; + var number_of_points = 0, pt; + + var sx = Math.max(R+1, border)|0; + var sy = Math.max(R+1, border)|0; + var ex = Math.min(w-R-2, w-border)|0; + var ey = Math.min(h-R-2, h-border)|0; + + row = (sy*w+sx)|0; + for(y = sy; y < ey; ++y, row+=w) { + for(x = sx, rowx = row; x < ex; ++x, ++rowx) { + ip = img[rowx] + tau, im = img[rowx] - tau; + + if (im= 3 && is_local_maxima(scores, rowx, score, hw, R)) { + pt = points[number_of_points]; + pt.x = x, pt.y = y, pt.score = abs_score; + ++number_of_points; + + x += Rm1, rowx += Rm1; + } + } + } + } + + return number_of_points; + } + }; + + })(); + + global.yape = yape; + +})(jsfeat); +/** + * @author Eugene Zatepyakin / http://inspirit.ru/ + * + * Original implementation derived from OpenCV, + * @authors Ethan Rublee, Vincent Rabaud, Gary Bradski + */ + +(function(global) { + "use strict"; + // + + var orb = (function() { + + var bit_pattern_31_ = new Int32Array([ + 8,-3, 9,5/*mean (0), correlation (0)*/, + 4,2, 7,-12/*mean (1.12461e-05), correlation (0.0437584)*/, + -11,9, -8,2/*mean (3.37382e-05), correlation (0.0617409)*/, + 7,-12, 12,-13/*mean (5.62303e-05), correlation (0.0636977)*/, + 2,-13, 2,12/*mean (0.000134953), correlation (0.085099)*/, + 1,-7, 1,6/*mean (0.000528565), correlation (0.0857175)*/, + -2,-10, -2,-4/*mean (0.0188821), correlation (0.0985774)*/, + -13,-13, -11,-8/*mean (0.0363135), correlation (0.0899616)*/, + -13,-3, -12,-9/*mean (0.121806), correlation (0.099849)*/, + 10,4, 11,9/*mean (0.122065), correlation (0.093285)*/, + -13,-8, -8,-9/*mean (0.162787), correlation (0.0942748)*/, + -11,7, -9,12/*mean (0.21561), correlation (0.0974438)*/, + 7,7, 12,6/*mean (0.160583), correlation (0.130064)*/, + -4,-5, -3,0/*mean (0.228171), correlation (0.132998)*/, + -13,2, -12,-3/*mean (0.00997526), correlation (0.145926)*/, + -9,0, -7,5/*mean (0.198234), correlation (0.143636)*/, + 12,-6, 12,-1/*mean (0.0676226), correlation (0.16689)*/, + -3,6, -2,12/*mean (0.166847), correlation (0.171682)*/, + -6,-13, -4,-8/*mean (0.101215), correlation (0.179716)*/, + 11,-13, 12,-8/*mean (0.200641), correlation (0.192279)*/, + 4,7, 5,1/*mean (0.205106), correlation (0.186848)*/, + 5,-3, 10,-3/*mean (0.234908), correlation (0.192319)*/, + 3,-7, 6,12/*mean (0.0709964), correlation (0.210872)*/, + -8,-7, -6,-2/*mean (0.0939834), correlation (0.212589)*/, + -2,11, -1,-10/*mean (0.127778), correlation (0.20866)*/, + -13,12, -8,10/*mean (0.14783), correlation (0.206356)*/, + -7,3, -5,-3/*mean (0.182141), correlation (0.198942)*/, + -4,2, -3,7/*mean (0.188237), correlation (0.21384)*/, + -10,-12, -6,11/*mean (0.14865), correlation (0.23571)*/, + 5,-12, 6,-7/*mean (0.222312), correlation (0.23324)*/, + 5,-6, 7,-1/*mean (0.229082), correlation (0.23389)*/, + 1,0, 4,-5/*mean (0.241577), correlation (0.215286)*/, + 9,11, 11,-13/*mean (0.00338507), correlation (0.251373)*/, + 4,7, 4,12/*mean (0.131005), correlation (0.257622)*/, + 2,-1, 4,4/*mean (0.152755), correlation (0.255205)*/, + -4,-12, -2,7/*mean (0.182771), correlation (0.244867)*/, + -8,-5, -7,-10/*mean (0.186898), correlation (0.23901)*/, + 4,11, 9,12/*mean (0.226226), correlation (0.258255)*/, + 0,-8, 1,-13/*mean (0.0897886), correlation (0.274827)*/, + -13,-2, -8,2/*mean (0.148774), correlation (0.28065)*/, + -3,-2, -2,3/*mean (0.153048), correlation (0.283063)*/, + -6,9, -4,-9/*mean (0.169523), correlation (0.278248)*/, + 8,12, 10,7/*mean (0.225337), correlation (0.282851)*/, + 0,9, 1,3/*mean (0.226687), correlation (0.278734)*/, + 7,-5, 11,-10/*mean (0.00693882), correlation (0.305161)*/, + -13,-6, -11,0/*mean (0.0227283), correlation (0.300181)*/, + 10,7, 12,1/*mean (0.125517), correlation (0.31089)*/, + -6,-3, -6,12/*mean (0.131748), correlation (0.312779)*/, + 10,-9, 12,-4/*mean (0.144827), correlation (0.292797)*/, + -13,8, -8,-12/*mean (0.149202), correlation (0.308918)*/, + -13,0, -8,-4/*mean (0.160909), correlation (0.310013)*/, + 3,3, 7,8/*mean (0.177755), correlation (0.309394)*/, + 5,7, 10,-7/*mean (0.212337), correlation (0.310315)*/, + -1,7, 1,-12/*mean (0.214429), correlation (0.311933)*/, + 3,-10, 5,6/*mean (0.235807), correlation (0.313104)*/, + 2,-4, 3,-10/*mean (0.00494827), correlation (0.344948)*/, + -13,0, -13,5/*mean (0.0549145), correlation (0.344675)*/, + -13,-7, -12,12/*mean (0.103385), correlation (0.342715)*/, + -13,3, -11,8/*mean (0.134222), correlation (0.322922)*/, + -7,12, -4,7/*mean (0.153284), correlation (0.337061)*/, + 6,-10, 12,8/*mean (0.154881), correlation (0.329257)*/, + -9,-1, -7,-6/*mean (0.200967), correlation (0.33312)*/, + -2,-5, 0,12/*mean (0.201518), correlation (0.340635)*/, + -12,5, -7,5/*mean (0.207805), correlation (0.335631)*/, + 3,-10, 8,-13/*mean (0.224438), correlation (0.34504)*/, + -7,-7, -4,5/*mean (0.239361), correlation (0.338053)*/, + -3,-2, -1,-7/*mean (0.240744), correlation (0.344322)*/, + 2,9, 5,-11/*mean (0.242949), correlation (0.34145)*/, + -11,-13, -5,-13/*mean (0.244028), correlation (0.336861)*/, + -1,6, 0,-1/*mean (0.247571), correlation (0.343684)*/, + 5,-3, 5,2/*mean (0.000697256), correlation (0.357265)*/, + -4,-13, -4,12/*mean (0.00213675), correlation (0.373827)*/, + -9,-6, -9,6/*mean (0.0126856), correlation (0.373938)*/, + -12,-10, -8,-4/*mean (0.0152497), correlation (0.364237)*/, + 10,2, 12,-3/*mean (0.0299933), correlation (0.345292)*/, + 7,12, 12,12/*mean (0.0307242), correlation (0.366299)*/, + -7,-13, -6,5/*mean (0.0534975), correlation (0.368357)*/, + -4,9, -3,4/*mean (0.099865), correlation (0.372276)*/, + 7,-1, 12,2/*mean (0.117083), correlation (0.364529)*/, + -7,6, -5,1/*mean (0.126125), correlation (0.369606)*/, + -13,11, -12,5/*mean (0.130364), correlation (0.358502)*/, + -3,7, -2,-6/*mean (0.131691), correlation (0.375531)*/, + 7,-8, 12,-7/*mean (0.160166), correlation (0.379508)*/, + -13,-7, -11,-12/*mean (0.167848), correlation (0.353343)*/, + 1,-3, 12,12/*mean (0.183378), correlation (0.371916)*/, + 2,-6, 3,0/*mean (0.228711), correlation (0.371761)*/, + -4,3, -2,-13/*mean (0.247211), correlation (0.364063)*/, + -1,-13, 1,9/*mean (0.249325), correlation (0.378139)*/, + 7,1, 8,-6/*mean (0.000652272), correlation (0.411682)*/, + 1,-1, 3,12/*mean (0.00248538), correlation (0.392988)*/, + 9,1, 12,6/*mean (0.0206815), correlation (0.386106)*/, + -1,-9, -1,3/*mean (0.0364485), correlation (0.410752)*/, + -13,-13, -10,5/*mean (0.0376068), correlation (0.398374)*/, + 7,7, 10,12/*mean (0.0424202), correlation (0.405663)*/, + 12,-5, 12,9/*mean (0.0942645), correlation (0.410422)*/, + 6,3, 7,11/*mean (0.1074), correlation (0.413224)*/, + 5,-13, 6,10/*mean (0.109256), correlation (0.408646)*/, + 2,-12, 2,3/*mean (0.131691), correlation (0.416076)*/, + 3,8, 4,-6/*mean (0.165081), correlation (0.417569)*/, + 2,6, 12,-13/*mean (0.171874), correlation (0.408471)*/, + 9,-12, 10,3/*mean (0.175146), correlation (0.41296)*/, + -8,4, -7,9/*mean (0.183682), correlation (0.402956)*/, + -11,12, -4,-6/*mean (0.184672), correlation (0.416125)*/, + 1,12, 2,-8/*mean (0.191487), correlation (0.386696)*/, + 6,-9, 7,-4/*mean (0.192668), correlation (0.394771)*/, + 2,3, 3,-2/*mean (0.200157), correlation (0.408303)*/, + 6,3, 11,0/*mean (0.204588), correlation (0.411762)*/, + 3,-3, 8,-8/*mean (0.205904), correlation (0.416294)*/, + 7,8, 9,3/*mean (0.213237), correlation (0.409306)*/, + -11,-5, -6,-4/*mean (0.243444), correlation (0.395069)*/, + -10,11, -5,10/*mean (0.247672), correlation (0.413392)*/, + -5,-8, -3,12/*mean (0.24774), correlation (0.411416)*/, + -10,5, -9,0/*mean (0.00213675), correlation (0.454003)*/, + 8,-1, 12,-6/*mean (0.0293635), correlation (0.455368)*/, + 4,-6, 6,-11/*mean (0.0404971), correlation (0.457393)*/, + -10,12, -8,7/*mean (0.0481107), correlation (0.448364)*/, + 4,-2, 6,7/*mean (0.050641), correlation (0.455019)*/, + -2,0, -2,12/*mean (0.0525978), correlation (0.44338)*/, + -5,-8, -5,2/*mean (0.0629667), correlation (0.457096)*/, + 7,-6, 10,12/*mean (0.0653846), correlation (0.445623)*/, + -9,-13, -8,-8/*mean (0.0858749), correlation (0.449789)*/, + -5,-13, -5,-2/*mean (0.122402), correlation (0.450201)*/, + 8,-8, 9,-13/*mean (0.125416), correlation (0.453224)*/, + -9,-11, -9,0/*mean (0.130128), correlation (0.458724)*/, + 1,-8, 1,-2/*mean (0.132467), correlation (0.440133)*/, + 7,-4, 9,1/*mean (0.132692), correlation (0.454)*/, + -2,1, -1,-4/*mean (0.135695), correlation (0.455739)*/, + 11,-6, 12,-11/*mean (0.142904), correlation (0.446114)*/, + -12,-9, -6,4/*mean (0.146165), correlation (0.451473)*/, + 3,7, 7,12/*mean (0.147627), correlation (0.456643)*/, + 5,5, 10,8/*mean (0.152901), correlation (0.455036)*/, + 0,-4, 2,8/*mean (0.167083), correlation (0.459315)*/, + -9,12, -5,-13/*mean (0.173234), correlation (0.454706)*/, + 0,7, 2,12/*mean (0.18312), correlation (0.433855)*/, + -1,2, 1,7/*mean (0.185504), correlation (0.443838)*/, + 5,11, 7,-9/*mean (0.185706), correlation (0.451123)*/, + 3,5, 6,-8/*mean (0.188968), correlation (0.455808)*/, + -13,-4, -8,9/*mean (0.191667), correlation (0.459128)*/, + -5,9, -3,-3/*mean (0.193196), correlation (0.458364)*/, + -4,-7, -3,-12/*mean (0.196536), correlation (0.455782)*/, + 6,5, 8,0/*mean (0.1972), correlation (0.450481)*/, + -7,6, -6,12/*mean (0.199438), correlation (0.458156)*/, + -13,6, -5,-2/*mean (0.211224), correlation (0.449548)*/, + 1,-10, 3,10/*mean (0.211718), correlation (0.440606)*/, + 4,1, 8,-4/*mean (0.213034), correlation (0.443177)*/, + -2,-2, 2,-13/*mean (0.234334), correlation (0.455304)*/, + 2,-12, 12,12/*mean (0.235684), correlation (0.443436)*/, + -2,-13, 0,-6/*mean (0.237674), correlation (0.452525)*/, + 4,1, 9,3/*mean (0.23962), correlation (0.444824)*/, + -6,-10, -3,-5/*mean (0.248459), correlation (0.439621)*/, + -3,-13, -1,1/*mean (0.249505), correlation (0.456666)*/, + 7,5, 12,-11/*mean (0.00119208), correlation (0.495466)*/, + 4,-2, 5,-7/*mean (0.00372245), correlation (0.484214)*/, + -13,9, -9,-5/*mean (0.00741116), correlation (0.499854)*/, + 7,1, 8,6/*mean (0.0208952), correlation (0.499773)*/, + 7,-8, 7,6/*mean (0.0220085), correlation (0.501609)*/, + -7,-4, -7,1/*mean (0.0233806), correlation (0.496568)*/, + -8,11, -7,-8/*mean (0.0236505), correlation (0.489719)*/, + -13,6, -12,-8/*mean (0.0268781), correlation (0.503487)*/, + 2,4, 3,9/*mean (0.0323324), correlation (0.501938)*/, + 10,-5, 12,3/*mean (0.0399235), correlation (0.494029)*/, + -6,-5, -6,7/*mean (0.0420153), correlation (0.486579)*/, + 8,-3, 9,-8/*mean (0.0548021), correlation (0.484237)*/, + 2,-12, 2,8/*mean (0.0616622), correlation (0.496642)*/, + -11,-2, -10,3/*mean (0.0627755), correlation (0.498563)*/, + -12,-13, -7,-9/*mean (0.0829622), correlation (0.495491)*/, + -11,0, -10,-5/*mean (0.0843342), correlation (0.487146)*/, + 5,-3, 11,8/*mean (0.0929937), correlation (0.502315)*/, + -2,-13, -1,12/*mean (0.113327), correlation (0.48941)*/, + -1,-8, 0,9/*mean (0.132119), correlation (0.467268)*/, + -13,-11, -12,-5/*mean (0.136269), correlation (0.498771)*/, + -10,-2, -10,11/*mean (0.142173), correlation (0.498714)*/, + -3,9, -2,-13/*mean (0.144141), correlation (0.491973)*/, + 2,-3, 3,2/*mean (0.14892), correlation (0.500782)*/, + -9,-13, -4,0/*mean (0.150371), correlation (0.498211)*/, + -4,6, -3,-10/*mean (0.152159), correlation (0.495547)*/, + -4,12, -2,-7/*mean (0.156152), correlation (0.496925)*/, + -6,-11, -4,9/*mean (0.15749), correlation (0.499222)*/, + 6,-3, 6,11/*mean (0.159211), correlation (0.503821)*/, + -13,11, -5,5/*mean (0.162427), correlation (0.501907)*/, + 11,11, 12,6/*mean (0.16652), correlation (0.497632)*/, + 7,-5, 12,-2/*mean (0.169141), correlation (0.484474)*/, + -1,12, 0,7/*mean (0.169456), correlation (0.495339)*/, + -4,-8, -3,-2/*mean (0.171457), correlation (0.487251)*/, + -7,1, -6,7/*mean (0.175), correlation (0.500024)*/, + -13,-12, -8,-13/*mean (0.175866), correlation (0.497523)*/, + -7,-2, -6,-8/*mean (0.178273), correlation (0.501854)*/, + -8,5, -6,-9/*mean (0.181107), correlation (0.494888)*/, + -5,-1, -4,5/*mean (0.190227), correlation (0.482557)*/, + -13,7, -8,10/*mean (0.196739), correlation (0.496503)*/, + 1,5, 5,-13/*mean (0.19973), correlation (0.499759)*/, + 1,0, 10,-13/*mean (0.204465), correlation (0.49873)*/, + 9,12, 10,-1/*mean (0.209334), correlation (0.49063)*/, + 5,-8, 10,-9/*mean (0.211134), correlation (0.503011)*/, + -1,11, 1,-13/*mean (0.212), correlation (0.499414)*/, + -9,-3, -6,2/*mean (0.212168), correlation (0.480739)*/, + -1,-10, 1,12/*mean (0.212731), correlation (0.502523)*/, + -13,1, -8,-10/*mean (0.21327), correlation (0.489786)*/, + 8,-11, 10,-6/*mean (0.214159), correlation (0.488246)*/, + 2,-13, 3,-6/*mean (0.216993), correlation (0.50287)*/, + 7,-13, 12,-9/*mean (0.223639), correlation (0.470502)*/, + -10,-10, -5,-7/*mean (0.224089), correlation (0.500852)*/, + -10,-8, -8,-13/*mean (0.228666), correlation (0.502629)*/, + 4,-6, 8,5/*mean (0.22906), correlation (0.498305)*/, + 3,12, 8,-13/*mean (0.233378), correlation (0.503825)*/, + -4,2, -3,-3/*mean (0.234323), correlation (0.476692)*/, + 5,-13, 10,-12/*mean (0.236392), correlation (0.475462)*/, + 4,-13, 5,-1/*mean (0.236842), correlation (0.504132)*/, + -9,9, -4,3/*mean (0.236977), correlation (0.497739)*/, + 0,3, 3,-9/*mean (0.24314), correlation (0.499398)*/, + -12,1, -6,1/*mean (0.243297), correlation (0.489447)*/, + 3,2, 4,-8/*mean (0.00155196), correlation (0.553496)*/, + -10,-10, -10,9/*mean (0.00239541), correlation (0.54297)*/, + 8,-13, 12,12/*mean (0.0034413), correlation (0.544361)*/, + -8,-12, -6,-5/*mean (0.003565), correlation (0.551225)*/, + 2,2, 3,7/*mean (0.00835583), correlation (0.55285)*/, + 10,6, 11,-8/*mean (0.00885065), correlation (0.540913)*/, + 6,8, 8,-12/*mean (0.0101552), correlation (0.551085)*/, + -7,10, -6,5/*mean (0.0102227), correlation (0.533635)*/, + -3,-9, -3,9/*mean (0.0110211), correlation (0.543121)*/, + -1,-13, -1,5/*mean (0.0113473), correlation (0.550173)*/, + -3,-7, -3,4/*mean (0.0140913), correlation (0.554774)*/, + -8,-2, -8,3/*mean (0.017049), correlation (0.55461)*/, + 4,2, 12,12/*mean (0.01778), correlation (0.546921)*/, + 2,-5, 3,11/*mean (0.0224022), correlation (0.549667)*/, + 6,-9, 11,-13/*mean (0.029161), correlation (0.546295)*/, + 3,-1, 7,12/*mean (0.0303081), correlation (0.548599)*/, + 11,-1, 12,4/*mean (0.0355151), correlation (0.523943)*/, + -3,0, -3,6/*mean (0.0417904), correlation (0.543395)*/, + 4,-11, 4,12/*mean (0.0487292), correlation (0.542818)*/, + 2,-4, 2,1/*mean (0.0575124), correlation (0.554888)*/, + -10,-6, -8,1/*mean (0.0594242), correlation (0.544026)*/, + -13,7, -11,1/*mean (0.0597391), correlation (0.550524)*/, + -13,12, -11,-13/*mean (0.0608974), correlation (0.55383)*/, + 6,0, 11,-13/*mean (0.065126), correlation (0.552006)*/, + 0,-1, 1,4/*mean (0.074224), correlation (0.546372)*/, + -13,3, -9,-2/*mean (0.0808592), correlation (0.554875)*/, + -9,8, -6,-3/*mean (0.0883378), correlation (0.551178)*/, + -13,-6, -8,-2/*mean (0.0901035), correlation (0.548446)*/, + 5,-9, 8,10/*mean (0.0949843), correlation (0.554694)*/, + 2,7, 3,-9/*mean (0.0994152), correlation (0.550979)*/, + -1,-6, -1,-1/*mean (0.10045), correlation (0.552714)*/, + 9,5, 11,-2/*mean (0.100686), correlation (0.552594)*/, + 11,-3, 12,-8/*mean (0.101091), correlation (0.532394)*/, + 3,0, 3,5/*mean (0.101147), correlation (0.525576)*/, + -1,4, 0,10/*mean (0.105263), correlation (0.531498)*/, + 3,-6, 4,5/*mean (0.110785), correlation (0.540491)*/, + -13,0, -10,5/*mean (0.112798), correlation (0.536582)*/, + 5,8, 12,11/*mean (0.114181), correlation (0.555793)*/, + 8,9, 9,-6/*mean (0.117431), correlation (0.553763)*/, + 7,-4, 8,-12/*mean (0.118522), correlation (0.553452)*/, + -10,4, -10,9/*mean (0.12094), correlation (0.554785)*/, + 7,3, 12,4/*mean (0.122582), correlation (0.555825)*/, + 9,-7, 10,-2/*mean (0.124978), correlation (0.549846)*/, + 7,0, 12,-2/*mean (0.127002), correlation (0.537452)*/, + -1,-6, 0,-11/*mean (0.127148), correlation (0.547401)*/ + ]); + + var H = new jsfeat.matrix_t(3, 3, jsfeat.F32_t|jsfeat.C1_t); + var patch_img = new jsfeat.matrix_t(32, 32, jsfeat.U8_t|jsfeat.C1_t); + + var rectify_patch = function(src, dst, angle, px, py, psize) { + var cosine = Math.cos(angle); + var sine = Math.sin(angle); + + H.data[0] = cosine, H.data[1] = -sine, H.data[2] = (-cosine + sine ) * psize*0.5 + px, + H.data[3] = sine, H.data[4] = cosine, H.data[5] = (-sine - cosine) * psize*0.5 + py; + + jsfeat.imgproc.warp_affine(src, dst, H, 128); + }; + + return { + + describe: function(src, corners, count, descriptors) { + var DESCR_SIZE = 32; // bytes; + var i=0,b=0,px=0.0,py=0.0,angle=0.0; + var t0=0, t1=0, val=0; + var img = src.data, w = src.cols, h = src.rows; + var patch_d = patch_img.data; + var patch_off = 16*32 + 16; // center of patch + var patt=0; + + if(!(descriptors.type&jsfeat.U8_t)) { + // relocate to U8 type + descriptors.type = jsfeat.U8_t; + descriptors.cols = DESCR_SIZE; + descriptors.rows = count; + descriptors.channel = 1; + descriptors.allocate(); + } else { + descriptors.resize(DESCR_SIZE, count, 1); + } + + var descr_d = descriptors.data; + var descr_off = 0; + + for(i = 0; i < count; ++i) { + px = corners[i].x; + py = corners[i].y; + angle = corners[i].angle; + + rectify_patch(src, patch_img, angle, px, py, 32); + + // describe the patch + patt = 0; + for (b = 0; b < DESCR_SIZE; ++b) { + + t0 = patch_d[patch_off + bit_pattern_31_[patt+1] * 32 + bit_pattern_31_[patt]]; patt += 2; + t1 = patch_d[patch_off + bit_pattern_31_[patt+1] * 32 + bit_pattern_31_[patt]]; patt += 2; + val = (t0 < t1)|0; + + t0 = patch_d[patch_off + bit_pattern_31_[patt+1] * 32 + bit_pattern_31_[patt]]; patt += 2; + t1 = patch_d[patch_off + bit_pattern_31_[patt+1] * 32 + bit_pattern_31_[patt]]; patt += 2; + val |= (t0 < t1) << 1; + + t0 = patch_d[patch_off + bit_pattern_31_[patt+1] * 32 + bit_pattern_31_[patt]]; patt += 2; + t1 = patch_d[patch_off + bit_pattern_31_[patt+1] * 32 + bit_pattern_31_[patt]]; patt += 2; + val |= (t0 < t1) << 2; + + t0 = patch_d[patch_off + bit_pattern_31_[patt+1] * 32 + bit_pattern_31_[patt]]; patt += 2; + t1 = patch_d[patch_off + bit_pattern_31_[patt+1] * 32 + bit_pattern_31_[patt]]; patt += 2; + val |= (t0 < t1) << 3; + + t0 = patch_d[patch_off + bit_pattern_31_[patt+1] * 32 + bit_pattern_31_[patt]]; patt += 2; + t1 = patch_d[patch_off + bit_pattern_31_[patt+1] * 32 + bit_pattern_31_[patt]]; patt += 2; + val |= (t0 < t1) << 4; + + t0 = patch_d[patch_off + bit_pattern_31_[patt+1] * 32 + bit_pattern_31_[patt]]; patt += 2; + t1 = patch_d[patch_off + bit_pattern_31_[patt+1] * 32 + bit_pattern_31_[patt]]; patt += 2; + val |= (t0 < t1) << 5; + + t0 = patch_d[patch_off + bit_pattern_31_[patt+1] * 32 + bit_pattern_31_[patt]]; patt += 2; + t1 = patch_d[patch_off + bit_pattern_31_[patt+1] * 32 + bit_pattern_31_[patt]]; patt += 2; + val |= (t0 < t1) << 6; + + t0 = patch_d[patch_off + bit_pattern_31_[patt+1] * 32 + bit_pattern_31_[patt]]; patt += 2; + t1 = patch_d[patch_off + bit_pattern_31_[patt+1] * 32 + bit_pattern_31_[patt]]; patt += 2; + val |= (t0 < t1) << 7; + + descr_d[descr_off+b] = val; + } + descr_off += DESCR_SIZE; + } + } + }; + })(); + + global.orb = orb; + +})(jsfeat); +/** + * @author Eugene Zatepyakin / http://inspirit.ru/ + * + * this code is a rewrite from OpenCV's Lucas-Kanade optical flow implementation + */ + +(function(global) { + "use strict"; + // + var optical_flow_lk = (function() { + + // short link to shar deriv + var scharr_deriv = jsfeat.imgproc.scharr_derivatives; + + return { + track: function(prev_pyr, curr_pyr, prev_xy, curr_xy, count, win_size, max_iter, status, eps, min_eigen_threshold) { + if (typeof max_iter === "undefined") { max_iter = 30; } + if (typeof status === "undefined") { status = new Uint8Array(count); } + if (typeof eps === "undefined") { eps = 0.01; } + if (typeof min_eigen_threshold === "undefined") { min_eigen_threshold = 0.0001; } + + var half_win = (win_size-1)*0.5; + var win_area = (win_size*win_size)|0; + var win_area2 = win_area << 1; + var prev_imgs = prev_pyr.data, next_imgs = curr_pyr.data; + var img_prev=prev_imgs[0].data,img_next=next_imgs[0].data; + var w0 = prev_imgs[0].cols, h0 = prev_imgs[0].rows,lw=0,lh=0; + + var iwin_node = jsfeat.cache.get_buffer(win_area<<2); + var deriv_iwin_node = jsfeat.cache.get_buffer(win_area2<<2); + var deriv_lev_node = jsfeat.cache.get_buffer((h0*(w0<<1))<<2); + + var deriv_m = new jsfeat.matrix_t(w0, h0, jsfeat.S32C2_t, deriv_lev_node.data); + + var iwin_buf = iwin_node.i32; + var deriv_iwin = deriv_iwin_node.i32; + var deriv_lev = deriv_lev_node.i32; + + var dstep=0,src=0,dsrc=0,iptr=0,diptr=0,jptr=0; + var lev_sc=0.0,prev_x=0.0,prev_y=0.0,next_x=0.0,next_y=0.0; + var prev_delta_x=0.0,prev_delta_y=0.0,delta_x=0.0,delta_y=0.0; + var iprev_x=0,iprev_y=0,inext_x=0,inext_y=0; + var i=0,j=0,x=0,y=0,level=0,ptid=0,iter=0; + var brd_tl=0,brd_r=0,brd_b=0; + var a=0.0,b=0.0,b1=0.0,b2=0.0; + + // fixed point math + var W_BITS14 = 14; + var W_BITS4 = 14; + var W_BITS1m5 = W_BITS4 - 5; + var W_BITS1m51 = (1 << ((W_BITS1m5) - 1)); + var W_BITS14_ = (1 << W_BITS14); + var W_BITS41 = (1 << ((W_BITS4) - 1)); + var FLT_SCALE = 1.0/(1 << 20); + var iw00=0,iw01=0,iw10=0,iw11=0,ival=0,ixval=0,iyval=0; + var A11=0.0,A12=0.0,A22=0.0,D=0.0,min_eig=0.0; + + var FLT_EPSILON = 0.00000011920929; + eps *= eps; + + // reset status + for(; i < count; ++i) { + status[i] = 1; + } + + var max_level = (prev_pyr.levels - 1)|0; + level = max_level; + + for(; level >= 0; --level) { + lev_sc = (1.0/(1 << level)); + lw = w0 >> level; + lh = h0 >> level; + dstep = lw << 1; + img_prev = prev_imgs[level].data; + img_next = next_imgs[level].data; + + brd_r = (lw - win_size)|0; + brd_b = (lh - win_size)|0; + + // calculate level derivatives + scharr_deriv(prev_imgs[level], deriv_m); + + // iterate through points + for(ptid = 0; ptid < count; ++ptid) { + i = ptid << 1; + j = i + 1; + prev_x = prev_xy[i]*lev_sc; + prev_y = prev_xy[j]*lev_sc; + + if( level == max_level ) { + next_x = prev_x; + next_y = prev_y; + } else { + next_x = curr_xy[i]*2.0; + next_y = curr_xy[j]*2.0; + } + curr_xy[i] = next_x; + curr_xy[j] = next_y; + + prev_x -= half_win; + prev_y -= half_win; + iprev_x = prev_x|0; + iprev_y = prev_y|0; + + // border check + x = (iprev_x <= brd_tl)|(iprev_x >= brd_r)|(iprev_y <= brd_tl)|(iprev_y >= brd_b); + if( x != 0 ) { + if( level == 0 ) { + status[ptid] = 0; + } + continue; + } + + a = prev_x - iprev_x; + b = prev_y - iprev_y; + iw00 = (((1.0 - a)*(1.0 - b)*W_BITS14_) + 0.5)|0; + iw01 = ((a*(1.0 - b)*W_BITS14_) + 0.5)|0; + iw10 = (((1.0 - a)*b*W_BITS14_) + 0.5)|0; + iw11 = (W_BITS14_ - iw00 - iw01 - iw10); + + A11 = 0.0, A12 = 0.0, A22 = 0.0; + + // extract the patch from the first image, compute covariation matrix of derivatives + for( y = 0; y < win_size; ++y ) { + src = ( (y + iprev_y)*lw + iprev_x )|0; + dsrc = src << 1; + + iptr = (y*win_size)|0; + diptr = iptr << 1; + for(x = 0 ; x < win_size; ++x, ++src, ++iptr, dsrc += 2) { + ival = ( (img_prev[src])*iw00 + (img_prev[src+1])*iw01 + + (img_prev[src+lw])*iw10 + (img_prev[src+lw+1])*iw11 ); + ival = (((ival) + W_BITS1m51) >> (W_BITS1m5)); + + ixval = ( deriv_lev[dsrc]*iw00 + deriv_lev[dsrc+2]*iw01 + + deriv_lev[dsrc+dstep]*iw10 + deriv_lev[dsrc+dstep+2]*iw11 ); + ixval = (((ixval) + W_BITS41) >> (W_BITS4)); + + iyval = ( deriv_lev[dsrc+1]*iw00 + deriv_lev[dsrc+3]*iw01 + deriv_lev[dsrc+dstep+1]*iw10 + + deriv_lev[dsrc+dstep+3]*iw11 ); + iyval = (((iyval) + W_BITS41) >> (W_BITS4)); + + iwin_buf[iptr] = ival; + deriv_iwin[diptr++] = ixval; + deriv_iwin[diptr++] = iyval; + + A11 += ixval*ixval; + A12 += ixval*iyval; + A22 += iyval*iyval; + } + } + + A11 *= FLT_SCALE; A12 *= FLT_SCALE; A22 *= FLT_SCALE; + + D = A11*A22 - A12*A12; + min_eig = (A22 + A11 - Math.sqrt((A11-A22)*(A11-A22) + 4.0*A12*A12)) / win_area2; + + if( min_eig < min_eigen_threshold || D < FLT_EPSILON ) + { + if( level == 0 ) { + status[ptid] = 0; + } + continue; + } + + D = 1.0/D; + + next_x -= half_win; + next_y -= half_win; + prev_delta_x = 0.0; + prev_delta_y = 0.0; + + for( iter = 0; iter < max_iter; ++iter ) { + inext_x = next_x|0; + inext_y = next_y|0; + + x = (inext_x <= brd_tl)|(inext_x >= brd_r)|(inext_y <= brd_tl)|(inext_y >= brd_b); + if( x != 0 ) { + if( level == 0 ) { + status[ptid] = 0; + } + break; + } + + a = next_x - inext_x; + b = next_y - inext_y; + iw00 = (((1.0 - a)*(1.0 - b)*W_BITS14_) + 0.5)|0; + iw01 = ((a*(1.0 - b)*W_BITS14_) + 0.5)|0; + iw10 = (((1.0 - a)*b*W_BITS14_) + 0.5)|0; + iw11 = (W_BITS14_ - iw00 - iw01 - iw10); + b1 = 0.0, b2 = 0.0; + + for( y = 0; y < win_size; ++y ) { + jptr = ( (y + inext_y)*lw + inext_x )|0; + + iptr = (y*win_size)|0; + diptr = iptr << 1; + for( x = 0 ; x < win_size; ++x, ++jptr, ++iptr ) { + ival = ( (img_next[jptr])*iw00 + (img_next[jptr+1])*iw01 + + (img_next[jptr+lw])*iw10 + (img_next[jptr+lw+1])*iw11 ); + ival = (((ival) + W_BITS1m51) >> (W_BITS1m5)); + ival = (ival - iwin_buf[iptr]); + + b1 += ival * deriv_iwin[diptr++]; + b2 += ival * deriv_iwin[diptr++]; + } + } + + b1 *= FLT_SCALE; + b2 *= FLT_SCALE; + + delta_x = ((A12*b2 - A22*b1) * D); + delta_y = ((A12*b1 - A11*b2) * D); + + next_x += delta_x; + next_y += delta_y; + curr_xy[i] = next_x + half_win; + curr_xy[j] = next_y + half_win; + + if( delta_x*delta_x + delta_y*delta_y <= eps ) { + break; + } + + if( iter > 0 && Math.abs(delta_x + prev_delta_x) < 0.01 && + Math.abs(delta_y + prev_delta_y) < 0.01 ) { + curr_xy[i] -= delta_x*0.5; + curr_xy[j] -= delta_y*0.5; + break; + } + + prev_delta_x = delta_x; + prev_delta_y = delta_y; + } + } // points loop + } // levels loop + + jsfeat.cache.put_buffer(iwin_node); + jsfeat.cache.put_buffer(deriv_iwin_node); + jsfeat.cache.put_buffer(deriv_lev_node); + } + }; + })(); + + global.optical_flow_lk = optical_flow_lk; + +})(jsfeat); +/** + * @author Eugene Zatepyakin / http://inspirit.ru/ + * + * this code is a rewrite from https://github.com/mtschirs/js-objectdetect implementation + * @author Martin Tschirsich / http://www.tu-darmstadt.de/~m_t + */ + +(function(global) { + "use strict"; + // + var haar = (function() { + + var _group_func = function(r1, r2) { + var distance = (r1.width * 0.25 + 0.5)|0; + + return r2.x <= r1.x + distance && + r2.x >= r1.x - distance && + r2.y <= r1.y + distance && + r2.y >= r1.y - distance && + r2.width <= (r1.width * 1.5 + 0.5)|0 && + (r2.width * 1.5 + 0.5)|0 >= r1.width; + }; + + return { + + edges_density: 0.07, + + detect_single_scale: function(int_sum, int_sqsum, int_tilted, int_canny_sum, width, height, scale, classifier) { + var win_w = (classifier.size[0] * scale)|0, + win_h = (classifier.size[1] * scale)|0, + step_x = (0.5 * scale + 1.5)|0, + step_y = step_x; + var i,j,k,x,y,ex=(width-win_w)|0,ey=(height-win_h)|0; + var w1=(width+1)|0,edge_dens,mean,variance,std; + var inv_area = 1.0 / (win_w * win_h); + var stages,stage,trees,tree,sn,tn,fn,found=true,stage_thresh,stage_sum,tree_sum,feature,features; + var fi_a,fi_b,fi_c,fi_d,fw,fh; + + var ii_a=0,ii_b=win_w,ii_c=win_h*w1,ii_d=ii_c+win_w; + var edges_thresh = ((win_w*win_h) * 0xff * this.edges_density)|0; + // if too much gradient we also can skip + //var edges_thresh_high = ((win_w*win_h) * 0xff * 0.3)|0; + + var rects = []; + for(y = 0; y < ey; y += step_y) { + ii_a = y * w1; + for(x = 0; x < ex; x += step_x, ii_a += step_x) { + + mean = int_sum[ii_a] + - int_sum[ii_a+ii_b] + - int_sum[ii_a+ii_c] + + int_sum[ii_a+ii_d]; + + // canny prune + if(int_canny_sum) { + edge_dens = (int_canny_sum[ii_a] + - int_canny_sum[ii_a+ii_b] + - int_canny_sum[ii_a+ii_c] + + int_canny_sum[ii_a+ii_d]); + if(edge_dens < edges_thresh || mean < 20) { + x += step_x, ii_a += step_x; + continue; + } + } + + mean *= inv_area; + variance = (int_sqsum[ii_a] + - int_sqsum[ii_a+ii_b] + - int_sqsum[ii_a+ii_c] + + int_sqsum[ii_a+ii_d]) * inv_area - mean * mean; + + std = variance > 0. ? Math.sqrt(variance) : 1; + + stages = classifier.complexClassifiers; + sn = stages.length; + found = true; + for(i = 0; i < sn; ++i) { + stage = stages[i]; + stage_thresh = stage.threshold; + trees = stage.simpleClassifiers; + tn = trees.length; + stage_sum = 0; + for(j = 0; j < tn; ++j) { + tree = trees[j]; + tree_sum = 0; + features = tree.features; + fn = features.length; + if(tree.tilted === 1) { + for(k=0; k < fn; ++k) { + feature = features[k]; + fi_a = ~~(x + feature[0] * scale) + ~~(y + feature[1] * scale) * w1; + fw = ~~(feature[2] * scale); + fh = ~~(feature[3] * scale); + fi_b = fw * w1; + fi_c = fh * w1; + + tree_sum += (int_tilted[fi_a] + - int_tilted[fi_a + fw + fi_b] + - int_tilted[fi_a - fh + fi_c] + + int_tilted[fi_a + fw - fh + fi_b + fi_c]) * feature[4]; + } + } else { + for(k=0; k < fn; ++k) { + feature = features[k]; + fi_a = ~~(x + feature[0] * scale) + ~~(y + feature[1] * scale) * w1; + fw = ~~(feature[2] * scale); + fh = ~~(feature[3] * scale); + fi_c = fh * w1; + + tree_sum += (int_sum[fi_a] + - int_sum[fi_a+fw] + - int_sum[fi_a+fi_c] + + int_sum[fi_a+fi_c+fw]) * feature[4]; + } + } + stage_sum += (tree_sum * inv_area < tree.threshold * std) ? tree.left_val : tree.right_val; + } + if (stage_sum < stage_thresh) { + found = false; + break; + } + } + + if(found) { + rects.push({"x" : x, + "y" : y, + "width" : win_w, + "height" : win_h, + "neighbor" : 1, + "confidence" : stage_sum}); + x += step_x, ii_a += step_x; + } + } + } + return rects; + }, + + detect_multi_scale: function(int_sum, int_sqsum, int_tilted, int_canny_sum, width, height, classifier, scale_factor, scale_min) { + if (typeof scale_factor === "undefined") { scale_factor = 1.2; } + if (typeof scale_min === "undefined") { scale_min = 1.0; } + var win_w = classifier.size[0]; + var win_h = classifier.size[1]; + var rects = []; + while (scale_min * win_w < width && scale_min * win_h < height) { + rects = rects.concat(this.detect_single_scale(int_sum, int_sqsum, int_tilted, int_canny_sum, width, height, scale_min, classifier)); + scale_min *= scale_factor; + } + return rects; + }, + + // OpenCV method to group detected rectangles + group_rectangles: function(rects, min_neighbors) { + if (typeof min_neighbors === "undefined") { min_neighbors = 1; } + var i, j, n = rects.length; + var node = []; + for (i = 0; i < n; ++i) { + node[i] = {"parent" : -1, + "element" : rects[i], + "rank" : 0}; + } + for (i = 0; i < n; ++i) { + if (!node[i].element) + continue; + var root = i; + while (node[root].parent != -1) + root = node[root].parent; + for (j = 0; j < n; ++j) { + if( i != j && node[j].element && _group_func(node[i].element, node[j].element)) { + var root2 = j; + + while (node[root2].parent != -1) + root2 = node[root2].parent; + + if(root2 != root) { + if(node[root].rank > node[root2].rank) + node[root2].parent = root; + else { + node[root].parent = root2; + if (node[root].rank == node[root2].rank) + node[root2].rank++; + root = root2; + } + + /* compress path from node2 to the root: */ + var temp, node2 = j; + while (node[node2].parent != -1) { + temp = node2; + node2 = node[node2].parent; + node[temp].parent = root; + } + + /* compress path from node to the root: */ + node2 = i; + while (node[node2].parent != -1) { + temp = node2; + node2 = node[node2].parent; + node[temp].parent = root; + } + } + } + } + } + var idx_seq = []; + var class_idx = 0; + for(i = 0; i < n; i++) { + j = -1; + var node1 = i; + if(node[node1].element) { + while (node[node1].parent != -1) + node1 = node[node1].parent; + if(node[node1].rank >= 0) + node[node1].rank = ~class_idx++; + j = ~node[node1].rank; + } + idx_seq[i] = j; + } + + var comps = []; + for (i = 0; i < class_idx+1; ++i) { + comps[i] = {"neighbors" : 0, + "x" : 0, + "y" : 0, + "width" : 0, + "height" : 0, + "confidence" : 0}; + } + + // count number of neighbors + for(i = 0; i < n; ++i) { + var r1 = rects[i]; + var idx = idx_seq[i]; + + if (comps[idx].neighbors == 0) + comps[idx].confidence = r1.confidence; + + ++comps[idx].neighbors; + + comps[idx].x += r1.x; + comps[idx].y += r1.y; + comps[idx].width += r1.width; + comps[idx].height += r1.height; + comps[idx].confidence = Math.max(comps[idx].confidence, r1.confidence); + } + + var seq2 = []; + // calculate average bounding box + for(i = 0; i < class_idx; ++i) { + n = comps[i].neighbors; + if (n >= min_neighbors) + seq2.push({"x" : (comps[i].x * 2 + n) / (2 * n), + "y" : (comps[i].y * 2 + n) / (2 * n), + "width" : (comps[i].width * 2 + n) / (2 * n), + "height" : (comps[i].height * 2 + n) / (2 * n), + "neighbors" : comps[i].neighbors, + "confidence" : comps[i].confidence}); + } + + var result_seq = []; + n = seq2.length; + // filter out small face rectangles inside large face rectangles + for(i = 0; i < n; ++i) { + var r1 = seq2[i]; + var flag = true; + for(j = 0; j < n; ++j) { + var r2 = seq2[j]; + var distance = (r2.width * 0.25 + 0.5)|0; + + if(i != j && + r1.x >= r2.x - distance && + r1.y >= r2.y - distance && + r1.x + r1.width <= r2.x + r2.width + distance && + r1.y + r1.height <= r2.y + r2.height + distance && + (r2.neighbors > Math.max(3, r1.neighbors) || r1.neighbors < 3)) { + flag = false; + break; + } + } + + if(flag) + result_seq.push(r1); + } + return result_seq; + } + }; + + })(); + + global.haar = haar; + +})(jsfeat); +/** + * BBF: Brightness Binary Feature + * + * @author Eugene Zatepyakin / http://inspirit.ru/ + * + * this code is a rewrite from https://github.com/liuliu/ccv implementation + * @author Liu Liu / http://liuliu.me/ + * + * The original paper refers to: YEF∗ Real-Time Object Detection, Yotam Abramson and Bruno Steux + */ + +(function(global) { + "use strict"; + // + var bbf = (function() { + + var _group_func = function(r1, r2) { + var distance = (r1.width * 0.25 + 0.5)|0; + + return r2.x <= r1.x + distance && + r2.x >= r1.x - distance && + r2.y <= r1.y + distance && + r2.y >= r1.y - distance && + r2.width <= (r1.width * 1.5 + 0.5)|0 && + (r2.width * 1.5 + 0.5)|0 >= r1.width; + }; + + var img_pyr = new jsfeat.pyramid_t(1); + + return { + + interval: 4, + scale: 1.1486, + next: 5, + scale_to: 1, + + // make features local copy + // to avoid array allocation with each scale + // this is strange but array works faster than Int32 version??? + prepare_cascade: function(cascade) { + var sn = cascade.stage_classifier.length; + for (var j = 0; j < sn; j++) { + var orig_feature = cascade.stage_classifier[j].feature; + var f_cnt = cascade.stage_classifier[j].count; + var feature = cascade.stage_classifier[j]._feature = new Array(f_cnt); + for (var k = 0; k < f_cnt; k++) { + feature[k] = {"size" : orig_feature[k].size, + "px" : new Array(orig_feature[k].size), + "pz" : new Array(orig_feature[k].size), + "nx" : new Array(orig_feature[k].size), + "nz" : new Array(orig_feature[k].size)}; + } + } + }, + + build_pyramid: function(src, min_width, min_height, interval) { + if (typeof interval === "undefined") { interval = 4; } + + var sw=src.cols,sh=src.rows; + var i=0,nw=0,nh=0; + var new_pyr=false; + var src0=src,src1=src; + var data_type = jsfeat.U8_t | jsfeat.C1_t; + + this.interval = interval; + this.scale = Math.pow(2, 1 / (this.interval + 1)); + this.next = (this.interval + 1)|0; + this.scale_to = (Math.log(Math.min(sw / min_width, sh / min_height)) / Math.log(this.scale))|0; + + var pyr_l = ((this.scale_to + this.next * 2) * 4) | 0; + if(img_pyr.levels != pyr_l) { + img_pyr.levels = pyr_l; + img_pyr.data = new Array(pyr_l); + new_pyr = true; + img_pyr.data[0] = src; // first is src + } + + for (i = 1; i <= this.interval; ++i) { + nw = (sw / Math.pow(this.scale, i))|0; + nh = (sh / Math.pow(this.scale, i))|0; + src0 = img_pyr.data[i<<2]; + if(new_pyr || nw != src0.cols || nh != src0.rows) { + img_pyr.data[i<<2] = new jsfeat.matrix_t(nw, nh, data_type); + src0 = img_pyr.data[i<<2]; + } + jsfeat.imgproc.resample(src, src0, nw, nh); + } + for (i = this.next; i < this.scale_to + this.next * 2; ++i) { + src1 = img_pyr.data[(i << 2) - (this.next << 2)]; + src0 = img_pyr.data[i<<2]; + nw = src1.cols >> 1; + nh = src1.rows >> 1; + if(new_pyr || nw != src0.cols || nh != src0.rows) { + img_pyr.data[i<<2] = new jsfeat.matrix_t(nw, nh, data_type); + src0 = img_pyr.data[i<<2]; + } + jsfeat.imgproc.pyrdown(src1, src0); + } + for (i = this.next * 2; i < this.scale_to + this.next * 2; ++i) { + src1 = img_pyr.data[(i << 2) - (this.next << 2)]; + nw = src1.cols >> 1; + nh = src1.rows >> 1; + src0 = img_pyr.data[(i<<2)+1]; + if(new_pyr || nw != src0.cols || nh != src0.rows) { + img_pyr.data[(i<<2)+1] = new jsfeat.matrix_t(nw, nh, data_type); + src0 = img_pyr.data[(i<<2)+1]; + } + jsfeat.imgproc.pyrdown(src1, src0, 1, 0); + // + src0 = img_pyr.data[(i<<2)+2]; + if(new_pyr || nw != src0.cols || nh != src0.rows) { + img_pyr.data[(i<<2)+2] = new jsfeat.matrix_t(nw, nh, data_type); + src0 = img_pyr.data[(i<<2)+2]; + } + jsfeat.imgproc.pyrdown(src1, src0, 0, 1); + // + src0 = img_pyr.data[(i<<2)+3]; + if(new_pyr || nw != src0.cols || nh != src0.rows) { + img_pyr.data[(i<<2)+3] = new jsfeat.matrix_t(nw, nh, data_type); + src0 = img_pyr.data[(i<<2)+3]; + } + jsfeat.imgproc.pyrdown(src1, src0, 1, 1); + } + return img_pyr; + }, + + detect: function(pyramid, cascade) { + var interval = this.interval; + var scale = this.scale; + var next = this.next; + var scale_upto = this.scale_to; + var i=0,j=0,k=0,n=0,x=0,y=0,q=0,sn=0,f_cnt=0,q_cnt=0,p=0,pmin=0,nmax=0,f=0,i4=0,qw=0,qh=0; + var sum=0.0, alpha, feature, orig_feature, feature_k, feature_o, flag = true, shortcut=true; + var scale_x = 1.0, scale_y = 1.0; + var dx = [0, 1, 0, 1]; + var dy = [0, 0, 1, 1]; + var seq = []; + var pyr=pyramid.data, bpp = 1, bpp2 = 2, bpp4 = 4; + + var u8 = [], u8o = [0,0,0]; + var step = [0,0,0]; + var paddings = [0,0,0]; + + for (i = 0; i < scale_upto; i++) { + i4 = (i<<2); + qw = pyr[i4 + (next << 3)].cols - (cascade.width >> 2); + qh = pyr[i4 + (next << 3)].rows - (cascade.height >> 2); + step[0] = pyr[i4].cols * bpp; + step[1] = pyr[i4 + (next << 2)].cols * bpp; + step[2] = pyr[i4 + (next << 3)].cols * bpp; + paddings[0] = (pyr[i4].cols * bpp4) - (qw * bpp4); + paddings[1] = (pyr[i4 + (next << 2)].cols * bpp2) - (qw * bpp2); + paddings[2] = (pyr[i4 + (next << 3)].cols * bpp) - (qw * bpp); + sn = cascade.stage_classifier.length; + for (j = 0; j < sn; j++) { + orig_feature = cascade.stage_classifier[j].feature; + feature = cascade.stage_classifier[j]._feature; + f_cnt = cascade.stage_classifier[j].count; + for (k = 0; k < f_cnt; k++) { + feature_k = feature[k]; + feature_o = orig_feature[k]; + q_cnt = feature_o.size|0; + for (q = 0; q < q_cnt; q++) { + feature_k.px[q] = (feature_o.px[q] * bpp) + feature_o.py[q] * step[feature_o.pz[q]]; + feature_k.pz[q] = feature_o.pz[q]; + feature_k.nx[q] = (feature_o.nx[q] * bpp) + feature_o.ny[q] * step[feature_o.nz[q]]; + feature_k.nz[q] = feature_o.nz[q]; + } + } + } + u8[0] = pyr[i4].data; u8[1] = pyr[i4 + (next<<2)].data; + for (q = 0; q < 4; q++) { + u8[2] = pyr[i4 + (next<<3) + q].data; + u8o[0] = (dx[q]*bpp2) + dy[q] * (pyr[i4].cols*bpp2); + u8o[1] = (dx[q]*bpp) + dy[q] * (pyr[i4 + (next<<2)].cols*bpp); + u8o[2] = 0; + for (y = 0; y < qh; y++) { + for (x = 0; x < qw; x++) { + sum = 0; + flag = true; + sn = cascade.stage_classifier.length; + for (j = 0; j < sn; j++) { + sum = 0; + alpha = cascade.stage_classifier[j].alpha; + feature = cascade.stage_classifier[j]._feature; + f_cnt = cascade.stage_classifier[j].count; + for (k = 0; k < f_cnt; k++) { + feature_k = feature[k]; + pmin = u8[feature_k.pz[0]][u8o[feature_k.pz[0]] + feature_k.px[0]]; + nmax = u8[feature_k.nz[0]][u8o[feature_k.nz[0]] + feature_k.nx[0]]; + if (pmin <= nmax) { + sum += alpha[k << 1]; + } else { + shortcut = true; + q_cnt = feature_k.size; + for (f = 1; f < q_cnt; f++) { + if (feature_k.pz[f] >= 0) { + p = u8[feature_k.pz[f]][u8o[feature_k.pz[f]] + feature_k.px[f]]; + if (p < pmin) { + if (p <= nmax) { + shortcut = false; + break; + } + pmin = p; + } + } + if (feature_k.nz[f] >= 0) { + n = u8[feature_k.nz[f]][u8o[feature_k.nz[f]] + feature_k.nx[f]]; + if (n > nmax) { + if (pmin <= n) { + shortcut = false; + break; + } + nmax = n; + } + } + } + sum += (shortcut) ? alpha[(k << 1) + 1] : alpha[k << 1]; + } + } + if (sum < cascade.stage_classifier[j].threshold) { + flag = false; + break; + } + } + if (flag) { + seq.push({"x" : (x * 4 + dx[q] * 2) * scale_x, + "y" : (y * 4 + dy[q] * 2) * scale_y, + "width" : cascade.width * scale_x, + "height" : cascade.height * scale_y, + "neighbor" : 1, + "confidence" : sum}); + ++x; + u8o[0] += bpp4; + u8o[1] += bpp2; + u8o[2] += bpp; + } + u8o[0] += bpp4; + u8o[1] += bpp2; + u8o[2] += bpp; + } + u8o[0] += paddings[0]; + u8o[1] += paddings[1]; + u8o[2] += paddings[2]; + } + } + scale_x *= scale; + scale_y *= scale; + } + + return seq; + }, + + // OpenCV method to group detected rectangles + group_rectangles: function(rects, min_neighbors) { + if (typeof min_neighbors === "undefined") { min_neighbors = 1; } + var i, j, n = rects.length; + var node = []; + for (i = 0; i < n; ++i) { + node[i] = {"parent" : -1, + "element" : rects[i], + "rank" : 0}; + } + for (i = 0; i < n; ++i) { + if (!node[i].element) + continue; + var root = i; + while (node[root].parent != -1) + root = node[root].parent; + for (j = 0; j < n; ++j) { + if( i != j && node[j].element && _group_func(node[i].element, node[j].element)) { + var root2 = j; + + while (node[root2].parent != -1) + root2 = node[root2].parent; + + if(root2 != root) { + if(node[root].rank > node[root2].rank) + node[root2].parent = root; + else { + node[root].parent = root2; + if (node[root].rank == node[root2].rank) + node[root2].rank++; + root = root2; + } + + /* compress path from node2 to the root: */ + var temp, node2 = j; + while (node[node2].parent != -1) { + temp = node2; + node2 = node[node2].parent; + node[temp].parent = root; + } + + /* compress path from node to the root: */ + node2 = i; + while (node[node2].parent != -1) { + temp = node2; + node2 = node[node2].parent; + node[temp].parent = root; + } + } + } + } + } + var idx_seq = []; + var class_idx = 0; + for(i = 0; i < n; i++) { + j = -1; + var node1 = i; + if(node[node1].element) { + while (node[node1].parent != -1) + node1 = node[node1].parent; + if(node[node1].rank >= 0) + node[node1].rank = ~class_idx++; + j = ~node[node1].rank; + } + idx_seq[i] = j; + } + + var comps = []; + for (i = 0; i < class_idx+1; ++i) { + comps[i] = {"neighbors" : 0, + "x" : 0, + "y" : 0, + "width" : 0, + "height" : 0, + "confidence" : 0}; + } + + // count number of neighbors + for(i = 0; i < n; ++i) { + var r1 = rects[i]; + var idx = idx_seq[i]; + + if (comps[idx].neighbors == 0) + comps[idx].confidence = r1.confidence; + + ++comps[idx].neighbors; + + comps[idx].x += r1.x; + comps[idx].y += r1.y; + comps[idx].width += r1.width; + comps[idx].height += r1.height; + comps[idx].confidence = Math.max(comps[idx].confidence, r1.confidence); + } + + var seq2 = []; + // calculate average bounding box + for(i = 0; i < class_idx; ++i) { + n = comps[i].neighbors; + if (n >= min_neighbors) + seq2.push({"x" : (comps[i].x * 2 + n) / (2 * n), + "y" : (comps[i].y * 2 + n) / (2 * n), + "width" : (comps[i].width * 2 + n) / (2 * n), + "height" : (comps[i].height * 2 + n) / (2 * n), + "neighbors" : comps[i].neighbors, + "confidence" : comps[i].confidence}); + } + + var result_seq = []; + n = seq2.length; + // filter out small face rectangles inside large face rectangles + for(i = 0; i < n; ++i) { + var r1 = seq2[i]; + var flag = true; + for(j = 0; j < n; ++j) { + var r2 = seq2[j]; + var distance = (r2.width * 0.25 + 0.5)|0; + + if(i != j && + r1.x >= r2.x - distance && + r1.y >= r2.y - distance && + r1.x + r1.width <= r2.x + r2.width + distance && + r1.y + r1.height <= r2.y + r2.height + distance && + (r2.neighbors > Math.max(3, r1.neighbors) || r1.neighbors < 3)) { + flag = false; + break; + } + } + + if(flag) + result_seq.push(r1); + } + return result_seq; + } + + }; + + })(); + + global.bbf = bbf; + +})(jsfeat); +/** + * @author Eugene Zatepyakin / http://inspirit.ru/ + */ + +(function(lib) { + "use strict"; + + { + // in commonjs, or when AMD wrapping has been applied, define its namespaces as exports + module.exports = lib; + } +})(jsfeat); +}); + +var findFaceWorker = function(e) { + var window = self; + + var jsfeat=jsfeat||{REVISION:"ALPHA"};(function(r){var o=1.192092896e-7;var l=1e-37;var m=256,i=512,h=1024,x=2048,w=4096;var A=1,n=2,b=3,p=4;var z=new Int32Array([-1,1,4,-1,4,-1,-1,-1,8,-1,-1,-1,-1,-1,-1,-1,8]);var y=(function(){return function(B){return(B&65280)}})();var k=(function(){return function(B){return(B&255)}})();var c=(function(){return function(B){return z[(B&65280)>>8]}})();var a=0;var f=1;var e=2;var u=3;var d=1;var s=1;var g=2;var v=(function(){function B(D,C){this.size=((D+7)|0)&-8;if(typeof C==="undefined"){this.buffer=new ArrayBuffer(this.size);}else{this.buffer=C;this.size=C.length;}this.u8=new Uint8Array(this.buffer);this.i32=new Int32Array(this.buffer);this.f32=new 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a=(function(){var c=function(e,d){var f=(e.width*0.25+0.5)|0;return d.x<=e.x+f&&d.x>=e.x-f&&d.y<=e.y+f&&d.y>=e.y-f&&d.width<=(e.width*1.5+0.5)|0&&(d.width*1.5+0.5)|0>=e.width};return{edges_density:0.07,detect_single_scale:function(E,ad,af,q,d,f,D,B){var z=(B.size[0]*D)|0,N=(B.size[1]*D)|0,V=(0.5*D+1.5)|0,U=V;var Z,X,W,Q,O,T=(d-z)|0,R=(f-N)|0;var H=(d+1)|0,w,p,r,S;var e=1/(z*N);var t,o,l,u,s,ae,A,g=true,L,h,n,G,m;var M,K,J,I,v,C;var ac=0,ab=z,aa=N*H,Y=aa+z;var F=((z*N)*255*this.edges_density)|0;var P=[];for(O=0;O0?Math.sqrt(r):1;t=B.complexClassifiers;s=t.length;g=true;for(Z=0;Zr[s].rank){r[s].parent=t;}else{r[t].parent=s;if(r[t].rank==r[s].rank){r[s].rank++;}t=s;}var A,d=v;while(r[d].parent!=-1){A=d;d=r[d].parent;r[A].parent=t;}d=y;while(r[d].parent!=-1){A=d;d=r[d].parent;r[A].parent=t;}}}}}var w=[];var o=0;for(y=0;y=0){r[e].rank=~o++;}v=~r[e].rank;}w[y]=v;}var m=[];for(y=0;y=l){h.push({x:(m[y].x*2+q)/(2*q),y:(m[y].y*2+q)/(2*q),width:(m[y].width*2+q)/(2*q),height:(m[y].height*2+q)/(2*q),neighbors:m[y].neighbors,confidence:m[y].confidence});}}var p=[];q=h.length;for(y=0;y=u.x-f&&z.y>=u.y-f&&z.x+z.width<=u.x+u.width+f&&z.y+z.height<=u.y+u.height+f&&(u.neighbors>Math.max(3,z.neighbors)||z.neighbors<3)){x=false;break}}if(x){p.push(z);}}return p}}})();b.haar=a;})(jsfeat);(function(a){var b=(function(){var c=function(f,e){var g=(f.width*0.25+0.5)|0;return e.x<=f.x+g&&e.x>=f.x-g&&e.y<=f.y+g&&e.y>=f.y-g&&e.width<=(f.width*1.5+0.5)|0&&(e.width*1.5+0.5)|0>=f.width};var d=new jsfeat.pyramid_t(1);return{interval:4,scale:1.1486,next:5,scale_to:1,prepare_cascade:function(g){var m=g.stage_classifier.length;for(var h=0;h>1;h=g.rows>>1;if(p||n!=j.cols||h!=j.rows){d.data[l<<2]=new jsfeat.matrix_t(n,h,r);j=d.data[l<<2];}jsfeat.imgproc.pyrdown(g,j);}for(l=this.next*2;l>1;h=g.rows>>1;j=d.data[(l<<2)+1];if(p||n!=j.cols||h!=j.rows){d.data[(l<<2)+1]=new jsfeat.matrix_t(n,h,r);j=d.data[(l<<2)+1];}jsfeat.imgproc.pyrdown(g,j,1,0);j=d.data[(l<<2)+2];if(p||n!=j.cols||h!=j.rows){d.data[(l<<2)+2]=new jsfeat.matrix_t(n,h,r);j=d.data[(l<<2)+2];}jsfeat.imgproc.pyrdown(g,j,0,1);j=d.data[(l<<2)+3];if(p||n!=j.cols||h!=j.rows){d.data[(l<<2)+3]=new jsfeat.matrix_t(n,h,r);j=d.data[(l<<2)+3];}jsfeat.imgproc.pyrdown(g,j,1,1);}return d},detect:function(G,L){var h=this.interval;var N=this.scale;var m=this.next;var l=this.scale_to;var ab=0,aa=0,Z=0,W=0,S=0,R=0,U=0,B=0,J=0,I=0,V=0,ae=0,M=0,ad=0,w=0,Y=0,g=0;var E=0,X,Q,D,H,F,O=true,o=true;var z=1,v=1;var s=[0,1,0,1];var r=[0,0,1,1];var K=[];var C=G.data,ac=1,u=2,t=4;var A=[],e=[0,0,0];var P=[0,0,0];var T=[0,0,0];for(ab=0;ab>2);g=C[w+(m<<3)].rows-(L.height>>2);P[0]=C[w].cols*ac;P[1]=C[w+(m<<2)].cols*ac;P[2]=C[w+(m<<3)].cols*ac;T[0]=(C[w].cols*t)-(Y*t);T[1]=(C[w+(m<<2)].cols*u)-(Y*u);T[2]=(C[w+(m<<3)].cols*ac)-(Y*ac);B=L.stage_classifier.length;for(aa=0;aa=0){V=A[H.pz[ad]][e[H.pz[ad]]+H.px[ad]];if(V=0){W=A[H.nz[ad]][e[H.nz[ad]]+H.nx[ad]];if(W>M){if(ae<=W){o=false;break}M=W;}}}E+=(o)?X[(Z<<1)+1]:X[Z<<1];}}if(Es[t].rank){s[t].parent=u;}else{s[u].parent=t;if(s[u].rank==s[t].rank){s[t].rank++;}u=t;}var B,e=w;while(s[e].parent!=-1){B=e;e=s[e].parent;s[B].parent=u;}e=z;while(s[e].parent!=-1){B=e;e=s[e].parent;s[B].parent=u;}}}}}var x=[];var p=0;for(z=0;z=0){s[f].rank=~p++;}w=~s[f].rank;}x[z]=w;}var o=[];for(z=0;z=m){k.push({x:(o[z].x*2+r)/(2*r),y:(o[z].y*2+r)/(2*r),width:(o[z].width*2+r)/(2*r),height:(o[z].height*2+r)/(2*r),neighbors:o[z].neighbors,confidence:o[z].confidence});}}var q=[];r=k.length;for(z=0;z=v.x-g&&A.y>=v.y-g&&A.x+A.width<=v.x+v.width+g&&A.y+A.height<=v.y+v.height+g&&(v.neighbors>Math.max(3,A.neighbors)||A.neighbors<3)){y=false;break}}if(y){q.push(A);}}return q}}})();a.bbf=b;})(jsfeat);(function(a){if(typeof module==="undefined"||typeof module.exports==="undefined"){window.jsfeat=a;}else{module.exports=a;}})(jsfeat); + + jsfeat.haar.frontalface = 'FRONTALFACE_PLACEHOLDER'; + + var imageData = e.data.imageData, + w = e.data.w, + h = e.data.h, + videoWidth = e.data.videoWidth, + params = e.data.params; + + var img_u8 = new jsfeat.matrix_t(w, h, jsfeat.U8_t | jsfeat.C1_t), + edg = new jsfeat.matrix_t(w, h, jsfeat.U8_t | jsfeat.C1_t), + ii_sum = new Int32Array((w+1)*(h+1)), + ii_sqsum = new Int32Array((w+1)*(h+1)), + ii_tilted = new Int32Array((w+1)*(h+1)), + ii_canny = new Int32Array((w+1)*(h+1)); + + var classifier = jsfeat.haar.frontalface; + + jsfeat.imgproc.grayscale(imageData.data, w, h, img_u8); + + // possible params + if (params.equalizeHistogram) { + jsfeat.imgproc.equalize_histogram(img_u8, img_u8); + } + //jsfeat.imgproc.gaussian_blur(img_u8, img_u8, 3); + + jsfeat.imgproc.compute_integral_image(img_u8, ii_sum, ii_sqsum, classifier.tilted ? ii_tilted : null); + + if(params.useCanny) { + jsfeat.imgproc.canny(img_u8, edg, 10, 50); + jsfeat.imgproc.compute_integral_image(edg, ii_canny, null, null); + } + + jsfeat.haar.edgesDensity = params.edgesDensity; + var rects = jsfeat.haar.detect_multi_scale(ii_sum, ii_sqsum, ii_tilted, params.useCanny? ii_canny : null, img_u8.cols, img_u8.rows, classifier, params.scaleFactor, params.minScale); + rects = jsfeat.haar.group_rectangles(rects, params.min_neighbors); + + for (var i = rects.length-1;i >= 0;i--) { + if (rects[i].confidence < params.confidenceThreshold) { + rects.splice(i,1); + } + } + + var rl = rects.length; + if (rl == 0) { + self.postMessage({ + faces: [] + }); + } else { + var best = rects[0]; + for (var i = 1;i < rl;i++) { + if (rects[i].neighbors > best.neighbors) { + best = rects[i]; + } else if (rects[i].neighbors == best.neighbors) { + // if (rects[i].width > best.width) best = rects[i]; // use biggest rect + if (rects[i].confidence > best.confidence) best = rects[i]; // use most confident rect + } + } + + var sc = videoWidth / img_u8.cols; + best.x = (best.x*sc)|0; + best.y = (best.y*sc)|0; + best.width = (best.width*sc)|0; + best.height = (best.height*sc)|0; + + self.postMessage({ + faces: [best] + }); + } +}; + +// import { drawDetection, drawFacialPoints, drawBoundingBox } from './utils/debugging.js'; + +/** + * this cascade is derived from https://github.com/mtschirs/js-objectdetect implementation + * @author Martin Tschirsich / http://www.tu-darmstadt.de/~m_t + */ +jsfeat_1.haar.frontalface = 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+ +var faceDetection = function(pdmModel, params) { + + // processes an image, detects a face and returns the initial face parameters for clmtrackr + // calls a callback function when it's done + // optionally uses web workers + + if (params === undefined) params = {}; + if (params.workSize === undefined) params.workSize = 200; + if (params.minScale === undefined) params.minScale = 2; + if (params.scaleFactor === undefined) params.scaleFactor = 1.15; + if (params.useCanny === undefined) params.useCanny = false; + if (params.edgesDensity === undefined) params.edgesDensity = 0.13; + if (params.equalizeHistogram === undefined) params.equalizeHistogram = false; + if (params.min_neighbors === undefined) params.min_neighbors = 2; + if (params.confidenceThreshold === undefined) params.confidenceThreshold = 106.1; + if (params.useWebWorkers === undefined) params.useWebWorkers = true; + + // disable web workers if not exists + if (!window.Worker) params.useWebWorkers = false; + + var msxmin, msymin, msymax; + var msmodelheight; + var element; + + var model = pdmModel; + + var mosseFilter = mosse.mosseFilter; + var left_eye_filter = mosse.filters.left_eye_filter; + var right_eye_filter = mosse.filters.right_eye_filter; + var nose_filter = mosse.filters.nose_filter; + + var mossef_lefteye, mossef_righteye, mossef_nose; + var right_eye_position = [0.0,0.0]; + var left_eye_position = [0.0,0.0]; + var nose_position = [0.0,0.0]; + + if (model.hints && mosseFilter && left_eye_filter && right_eye_filter && nose_filter) { + mossef_lefteye = new mosseFilter(); + mossef_lefteye.load(left_eye_filter); + mossef_righteye = new mosseFilter(); + mossef_righteye.load(right_eye_filter); + mossef_nose = new mosseFilter(); + mossef_nose.load(nose_filter); + } else { + console.log('MOSSE filters not found, using rough approximation for initialization.'); + } + + // load mean shape + var meanShape = model.shapeModel.meanShape; + var numPatches = model.patchModel.numPatches; + + // get max and mins, width and height of meanshape + msymax = 0; + msxmin = msymin = 1000000; + for (var i = 0;i < numPatches;i++) { + if (meanShape[i][0] < msxmin) msxmin = meanShape[i][0]; + if (meanShape[i][1] < msymin) msymin = meanShape[i][1]; + if (meanShape[i][1] > msymax) msymax = meanShape[i][1]; + } + msmodelheight = msymax-msymin; + + var jf = new jsfeat_face(params); + + this.init = function(video) { + element = video; + + jf.init(element); + }; + + var getBoundingBox = function(box) { + return new Promise(function(resolve, reject) { + if (box) { + resolve({x : box[0], y : box[1], width : box[2], height : box[3]}); + } else { + resolve(jf.findFace()); + } + }); + }; + + var getFinegrainedPosition = function(candidate) { + var translateX, translateY, scaling, rotation; + var x = candidate.x; + var y = candidate.y; + var w = candidate.width; + var h = candidate.height; + + // var debugCC = document.getElementById('overlay2').getContext('2d') + if (model.hints && mosseFilter && left_eye_filter && right_eye_filter && nose_filter) { + var noseFilterWidth = w * 4.5/10; + var eyeFilterWidth = w * 6/10; + + // detect position of eyes and nose via mosse filter + var nose_result = mossef_nose.track(element, Math.round(x+(w/2)-(noseFilterWidth/2)), Math.round(y+h*(5/8)-(noseFilterWidth/2)), noseFilterWidth, noseFilterWidth, false); + var right_result = mossef_righteye.track(element, Math.round(x+(w*3/4)-(eyeFilterWidth/2)), Math.round(y+h*(2/5)-(eyeFilterWidth/2)), eyeFilterWidth, eyeFilterWidth, false); + var left_result = mossef_lefteye.track(element, Math.round(x+(w/4)-(eyeFilterWidth/2)), Math.round(y+h*(2/5)-(eyeFilterWidth/2)), eyeFilterWidth, eyeFilterWidth, false); + right_eye_position[0] = Math.round(x+(w*3/4)-(eyeFilterWidth/2))+right_result[0]; + right_eye_position[1] = Math.round(y+h*(2/5)-(eyeFilterWidth/2))+right_result[1]; + left_eye_position[0] = Math.round(x+(w/4)-(eyeFilterWidth/2))+left_result[0]; + left_eye_position[1] = Math.round(y+h*(2/5)-(eyeFilterWidth/2))+left_result[1]; + nose_position[0] = Math.round(x+(w/2)-(noseFilterWidth/2))+nose_result[0]; + nose_position[1] = Math.round(y+h*(5/8)-(noseFilterWidth/2))+nose_result[1]; + + // drawDetection(debugCC, candidate, [left_eye_position, right_eye_positions, nose_position]); + + // get eye and nose positions of model + var lep = model.hints.leftEye; + var rep = model.hints.rightEye; + var mep = model.hints.nose; + + // get scaling, rotation, etc. via procrustes analysis + var procrustes_params = procrustes([left_eye_position, right_eye_position, nose_position], [lep, rep, mep]); + translateX = procrustes_params[0]; + translateY = procrustes_params[1]; + scaling = procrustes_params[2]; + rotation = procrustes_params[3]; + + // drawFacialPoints(debugCC, [lep, rep, mep], procrustes_params); + } else { + // drawBoundingBox(debugCC, [x,y,w,h]); + scaling = w/msmodelheight; + rotation = 0; + translateX = x-(msxmin*scaling)+0.1*w; + translateY = y-(msymin*scaling)+0.25*h; + } + + return [scaling, rotation, translateX, translateY]; + }; + + // get initial starting point for model + this.getInitialPosition = function(box) { + return new Promise(function(resolve, reject) { + getBoundingBox(box) + .then(getFinegrainedPosition) + .then(resolve) + .catch(reject); + }); + }; + + // procrustes analysis + function procrustes(template, shape) { + // assume template and shape is a vector of x,y-coordinates + //i.e. template = [[x1,y1], [x2,y2], [x3,y3]]; + var templateClone = []; + var shapeClone = []; + for (var i = 0;i < template.length;i++) { + templateClone[i] = [template[i][0], template[i][1]]; + } + for (var i = 0;i < shape.length;i++) { + shapeClone[i] = [shape[i][0], shape[i][1]]; + } + shape = shapeClone; + template = templateClone; + + // calculate translation + var templateMean = [0.0, 0.0]; + for (var i = 0;i < template.length;i++) { + templateMean[0] += template[i][0]; + templateMean[1] += template[i][1]; + } + templateMean[0] /= template.length; + templateMean[1] /= template.length; + + var shapeMean = [0.0, 0.0]; + for (var i = 0;i < shape.length;i++) { + shapeMean[0] += shape[i][0]; + shapeMean[1] += shape[i][1]; + } + shapeMean[0] /= shape.length; + shapeMean[1] /= shape.length; + + var translationX = templateMean[0] - shapeMean[0]; + var translationY = templateMean[1] - shapeMean[1]; + + // centralize + for (var i = 0;i < shape.length;i++) { + shape[i][0] -= shapeMean[0]; + shape[i][1] -= shapeMean[1]; + } + for (var i = 0;i < template.length;i++) { + template[i][0] -= templateMean[0]; + template[i][1] -= templateMean[1]; + } + + // scaling + + var scaleS = 0.0; + for (var i = 0;i < shape.length;i++) { + scaleS += ((shape[i][0])*(shape[i][0])); + scaleS += ((shape[i][1])*(shape[i][1])); + } + scaleS = Math.sqrt(scaleS/shape.length); + + var scaleT = 0.0; + for (var i = 0;i < template.length;i++) { + scaleT += ((template[i][0])*(template[i][0])); + scaleT += ((template[i][1])*(template[i][1])); + } + scaleT = Math.sqrt(scaleT/template.length); + + var scaling = scaleT/scaleS; + + for (var i = 0;i < shape.length;i++) { + shape[i][0] *= scaling; + shape[i][1] *= scaling; + } + + // rotation + + var top = 0.0; + var bottom = 0.0; + for (var i = 0;i < shape.length;i++) { + top += (shape[i][0]*template[i][1] - shape[i][1]*template[i][0]); + bottom += (shape[i][0]*template[i][0] + shape[i][1]*template[i][1]); + } + var rotation = Math.atan(top/bottom); + + translationX += (shapeMean[0]-(scaling*Math.cos(-rotation)*shapeMean[0])-(scaling*shapeMean[1]*Math.sin(-rotation))); + translationY += (shapeMean[1]+(scaling*Math.sin(-rotation)*shapeMean[0])-(scaling*shapeMean[1]*Math.cos(-rotation))); + + return [translationX, translationY, scaling, rotation]; + } +}; + +// simple wrapper for jsfeat face detector that can run as a webworker +var jsfeat_face = function(parameters) { + + var params = parameters; + var maxWorkSize = params.workSize; + var useWebWorkers = params.useWebWorkers; + + var work_canvas = document.createElement('canvas'); + var work_ctx = work_canvas.getContext('2d'); + + var videoWidth, videoHeight, scale, video, w, h; + var img_u8, edg, ii_sum, ii_sqsum, ii_tilted, ii_canny, classifier; + var worker; + + if (useWebWorkers) { + Worker.createURL = function(func_or_string) { + var str = (typeof func_or_string === 'function')?func_or_string.toString():func_or_string; + str = str.replace("'FRONTALFACE_PLACEHOLDER'", JSON.stringify(jsfeat_1.haar.frontalface)); + var blob = new Blob(['\'use strict\';\nself.onmessage ='+str], { type: 'text/javascript' }); + return window.URL.createObjectURL(blob); + }; + + Worker.create = function(func_or_string) { + return new Worker(Worker.createURL(func_or_string)); + }; + + worker = Worker.create(findFaceWorker); + } + + this.init = function(element) { + video = element; + videoWidth = video.width; + videoHeight = video.height; + + // scale down canvas we do detection on (to reduce noisy detections) + scale = Math.min(maxWorkSize/videoWidth, maxWorkSize/videoHeight); + w = (videoWidth*scale)|0; + h = (videoHeight*scale)|0; + + work_canvas.height = h; + work_canvas.width = w; + + if (!useWebWorkers) { + img_u8 = new jsfeat_1.matrix_t(w, h, jsfeat_1.U8_t | jsfeat_1.C1_t); + edg = new jsfeat_1.matrix_t(w, h, jsfeat_1.U8_t | jsfeat_1.C1_t); + ii_sum = new Int32Array((w+1)*(h+1)); + ii_sqsum = new Int32Array((w+1)*(h+1)); + ii_tilted = new Int32Array((w+1)*(h+1)); + ii_canny = new Int32Array((w+1)*(h+1)); + classifier = jsfeat_1.haar.frontalface; + } + }; + + this.findFace = function () { + work_ctx.drawImage(video, 0, 0, work_canvas.width, work_canvas.height); + var imageData = work_ctx.getImageData(0, 0, work_canvas.width, work_canvas.height); + + return new Promise(function(resolve, reject) { + if (useWebWorkers) { + worker.addEventListener('message', function (e) { + if (e.data.faces.length > 0) { + resolve(e.data.faces[0]); + } else { + reject(); + } + }.bind(this), false); + + worker.postMessage({ + w: work_canvas.width, + h: work_canvas.height, + videoWidth: videoWidth, + imageData:imageData, + params: params + }); + } else { + jsfeat_1.imgproc.grayscale(imageData.data, work_canvas.width, work_canvas.height, img_u8); + + // possible params + if(params.equalizeHistogram) { + jsfeat_1.imgproc.equalize_histogram(img_u8, img_u8); + } + //jsfeat.imgproc.gaussian_blur(img_u8, img_u8, 3); + + jsfeat_1.imgproc.compute_integral_image(img_u8, ii_sum, ii_sqsum, classifier.tilted ? ii_tilted : null); + + if(params.useCanny) { + jsfeat_1.imgproc.canny(img_u8, edg, 10, 50); + jsfeat_1.imgproc.compute_integral_image(edg, ii_canny, null, null); + } + + jsfeat_1.haar.edgesDensity = params.edgesDensity; + var rects = jsfeat_1.haar.detect_multi_scale(ii_sum, ii_sqsum, ii_tilted, params.useCanny? ii_canny : null, img_u8.cols, img_u8.rows, classifier, params.scaleFactor, params.minScale); + rects = jsfeat_1.haar.group_rectangles(rects, params.min_neighbors); + + for (var i = rects.length-1;i >= 0;i--) { + if (rects[i].confidence < params.confidenceThreshold) { + rects.splice(i,1); + } + } + + var rl = rects.length; + if (rl == 0) { + reject(); + } else { + var best = rects[0]; + for (var i = 1; i < rl; i++) { + if (rects[i].neighbors > best.neighbors) { + best = rects[i]; + } else if (rects[i].neighbors == best.neighbors) { + // if (rects[i].width > best.width) best = rects[i]; // use biggest rect + if (rects[i].confidence > best.confidence) best = rects[i]; // use most confident rect + } + } + + var sc = videoWidth / img_u8.cols; + best.x = (best.x*sc)|0; + best.y = (best.y*sc)|0; + best.width = (best.width*sc)|0; + best.height = (best.height*sc)|0; + + resolve(best); + } + } + }); + }; +}; + +/** + * Fast Fourier Transform + * 1D-FFT/IFFT, 2D-FFT/IFFT (radix-2) + * + * @author ryo / github.com/wellflat + * Based on https://github.com/wellflat/javascript-labs with some tiny optimizations + */ + +function FFT$1() { + + var _n = 0, // order + _bitrev = null, // bit reversal table + _cstb = null; // sin/cos table + var _tre, _tim; + + this.init = function (n) { + if(n !== 0 && (n & (n - 1)) === 0) { + _n = n; + _setVariables(); + _makeBitReversal(); + _makeCosSinTable(); + } else { + throw new Error('init: radix-2 required'); + } + }; + + // 1D-FFT + this.fft1d = function (re, im) { + fft(re, im, 1); + }; + + // 1D-IFFT + this.ifft1d = function (re, im) { + var n = 1/_n; + fft(re, im, -1); + for(var i=0; i<_n; i++) { + re[i] *= n; + im[i] *= n; + } + }; + + // 2D-FFT + this.fft2d = function (re, im) { + var i = 0; + // x-axis + for(var y=0; y<_n; y++) { + i = y*_n; + for(var x1=0; x1<_n; x1++) { + _tre[x1] = re[x1 + i]; + _tim[x1] = im[x1 + i]; + } + this.fft1d(_tre, _tim); + for(var x2=0; x2<_n; x2++) { + re[x2 + i] = _tre[x2]; + im[x2 + i] = _tim[x2]; + } + } + + // y-axis + for(var x=0; x<_n; x++) { + for(var y1=0; y1<_n; y1++) { + i = x + y1*_n; + _tre[y1] = re[i]; + _tim[y1] = im[i]; + } + this.fft1d(_tre, _tim); + for(var y2=0; y2<_n; y2++) { + i = x + y2*_n; + re[i] = _tre[y2]; + im[i] = _tim[y2]; + } + } + }; + + // 2D-IFFT + this.ifft2d = function (re, im) { + var i = 0; + // x-axis + for(var y=0; y<_n; y++) { + i = y*_n; + for(var x1=0; x1<_n; x1++) { + _tre[x1] = re[x1 + i]; + _tim[x1] = im[x1 + i]; + } + this.ifft1d(_tre, _tim); + for(var x2=0; x2<_n; x2++) { + re[x2 + i] = _tre[x2]; + im[x2 + i] = _tim[x2]; + } + } + // y-axis + for(var x=0; x<_n; x++) { + for(var y1=0; y1<_n; y1++) { + i = x + y1*_n; + _tre[y1] = re[i]; + _tim[y1] = im[i]; + } + this.ifft1d(_tre, _tim); + for(var y2=0; y2<_n; y2++) { + i = x + y2*_n; + re[i] = _tre[y2]; + im[i] = _tim[y2]; + } + } + }; + + // 2D-IFFT, real-valued + // only outputs the real valued part + this.real_ifft2d = function (re, im) { + var i2; + var i = 0; + // x-axis + for(var y=0; y<_n; y++) { + i = y*_n; + for(var x1=0; x1<_n; x1++) { + _tre[x1] = re[x1 + i]; + _tim[x1] = im[x1 + i]; + } + this.ifft1d(_tre, _tim); + for(var x2=0; x2<_n; x2++) { + re[x2 + i] = _tre[x2]; + im[x2 + i] = _tim[x2]; + } + } + // y-axis + var halfn = _n/2; + var rowIdx = 0; + for(var x=0; x<_n; x+=2) { + //untangle + i = x; + i2 = x+1; + _tre[0] = re[0 + i]; + _tim[0] = re[0 + i2]; + _tre[_n/2] = re[(halfn*_n) + i]; + _tim[_n/2] = re[(halfn*_n) + i2]; + for (var x2=1;x2> 2; + // bit reversal + for(var l=0; l<_n; l++) { + m = _bitrev[l]; + if(l < m) { + tmp = re[l]; + re[l] = re[m]; + re[m] = tmp; + tmp = im[l]; + im[l] = im[m]; + im[m] = tmp; + } + } + // butterfly operation + //butfly(re,im,inv,n4); + for(var k=1; k<_n; k<<=1) { + h = 0; + d = _n/(k << 1); + for(var j=0; j> 1; + while(k <= j) { + j -= k; + k >>= 1; + } + j += k; + _bitrev[i] = j; + } + } + + // make trigonometric function table + function _makeCosSinTable() { + var n2 = _n >> 1, + n4 = _n >> 2, + n8 = _n >> 3, + n2p4 = n2 + n4, + t = Math.sin(Math.PI/_n), + dc = 2*t*t, + ds = Math.sqrt(dc*(2 - dc)), + c = _cstb[n4] = 1, + s = _cstb[0] = 0; + t = 2*dc; + for(var i=1; i max) { + max = value; + } + } + } + var scale = max-min; + for (var j = 0;j < patch_width;j++) { + for (var k = 0;k < patch_width;k++) { + patch[k + (patch_width*j)] = (patch[k + (patch_width*j)]-min)/scale; + } + } + return patch; + }; + + var logisticResponse = function(response) { + // create probability by doing logistic transformation + for (var j = 0;j < search_width;j++) { + for (var k = 0;k < search_width;k++) { + response[j + (k*search_width)] = 1.0/(1.0 + Math.exp(- (response[j + (k*search_width)] - 1.0 ))); + } + } + return response; + }; + + var upperPowerOfTwo = function(x) { + x--; + x |= x >> 1; + x |= x >> 2; + x |= x >> 4; + x |= x >> 8; + x |= x >> 16; + x++; + return x; + }; + + var inplaceNormalizeFilterMatrix = function(response) { + // normalize responses to lie within [0,1] + var msize = response.length; + var max = 0; + var min = 1; + + for (var i = 0;i < msize;i++) { + max = response[i] > max ? response[i] : max; + min = response[i] < min ? response[i] : min; + } + var dist = max-min; + + if (dist == 0) { + //console.log('a patchresponse was monotone, causing normalization to fail. Leaving it unchanged.'); + } else { + for (var i = 0;i < msize;i++) { + response[i] = (response[i]-min)/dist; + } + } + }; +}; + +var webglUtils = createCommonjsModule(function (module, exports) { +// This code is based on webgl-utils.js authored by Gregg Tavares, license below: +/* + * Copyright (c) 2011, Gregg Tavares + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * * Neither the name of greggman.com nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS + * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +(function(){ + +var LOGGING_ENABLED = true; + +/** + * Wrapped logging function. + * @param {string} msg The message to log. + */ +const log = function (msg) { + if (!LOGGING_ENABLED) { return; } + if (window.console && window.console.log) { + window.console.log(msg); + } +}; + +/** + * Wrapped logging function. + * @param {string} msg The message to log. + */ +const error = function (msg) { + if (!LOGGING_ENABLED) { return; } + if (window.console) { + if (window.console.error) { + window.console.error(msg); + } else if (window.console.log) { + window.console.log(msg); + } + } + throw msg; +}; + +/** + * Turn off all logging. + */ +const loggingOff = function () { + LOGGING_ENABLED = false; +}; + +/** + * Check if the page is embedded. + * @return {boolean} True of we are in an iframe + */ +const isInIFrame = function () { + return window !== window.top; +}; + +/** + * Converts a WebGL enum to a string + * @param {!WebGLContext} gl The WebGLContext to use. + * @param {number} value The enum value. + * @return {string} The enum as a string. + */ +const glEnumToString = function (gl, value) { + for (var p in gl) { + if (gl[p] === value) { + return p; + } + } + return '0x' + value.toString(16); +}; + + +/** + * Creates the HTLM for a failure message + * @param {string} canvasContainerId id of container of th + * canvas. + * @return {string} The html. + */ +const makeFailHTML = function (msg) { + return '' + + '' + + '
' + + '
' + + '
' + msg + '
' + + '
' + + '
'; +}; + + +/** + * Mesasge for getting a webgl browser + * @type {string} + */ +// const GET_A_WEBGL_BROWSER = '' + +// 'This page requires a browser that supports WebGL.
' + +// 'Click here to upgrade your browser.'; + + +/** + * Mesasge for need better hardware + * @type {string} + */ +// const OTHER_PROBLEM = '' + +// "It doesn't appear your computer can support WebGL.
" + +// 'Click here for more information.'; + + +/** + * Creates a webgl context. If creation fails it will + * change the contents of the container of the + * tag to an error message with the correct links for WebGL. + * @param {Element} canvas. The canvas element to create a + * context from. + * @param {WebGLContextCreationAttirbutes} optAttribs Any + * creation attributes you want to pass in. + * @return {WebGLRenderingContext} The created context. + */ +const setupWebGL = function (canvas, optAttribs) { + // const showLink = function (str) { + // var container = canvas.parentNode; + // if (container) { + // container.innerHTML = makeFailHTML(str); + // } + // }; + + if (!window.WebGLRenderingContext) { + // showLink(GET_A_WEBGL_BROWSER); + return null; + } + + var context = create3DContext(canvas, optAttribs); + if (!context) { + // showLink(OTHER_PROBLEM); + return null; + } + return context; +}; + + +/** + * Creates a webgl context. + * @param {!Canvas} canvas The canvas tag to get context + * from. If one is not passed in one will be created. + * @return {!WebGLContext} The created context. + */ +const create3DContext = function (canvas, optAttribs) { + var names = ['webgl', 'experimental-webgl']; + var context = null; + for (var ii = 0; ii < names.length; ++ii) { + try { + context = canvas.getContext(names[ii], optAttribs); + } catch (e) {} + if (context) { + break; + } + } + return context; +}; + +const updateCSSIfInIFrame = function () { + if (isInIFrame()) { + document.body.className = 'iframe'; + } +}; + +/** + * Gets a WebGL context. + * makes its backing store the size it is displayed. + */ +const getWebGLContext = function (canvas) { + if (isInIFrame()) { + updateCSSIfInIFrame(); + + // make the canvas backing store the size it's displayed. + canvas.width = canvas.clientWidth; + canvas.height = canvas.clientHeight; + } + + var gl = setupWebGL(canvas); + return gl; +}; + + +/** + * Loads a shader. + * @param {!WebGLContext} gl The WebGLContext to use. + * @param {string} shaderSource The shader source. + * @param {number} shaderType The type of shader. + * @param {function(string): void) optErrorCallback callback for errors. + * @return {!WebGLShader} The created shader. + */ +const loadShader = function (gl, shaderSource, shaderType, optErrorCallback) { + var errFn = optErrorCallback || error; + // Create the shader object + var shader = gl.createShader(shaderType); + + // Load the shader source + gl.shaderSource(shader, shaderSource); + + // Compile the shader + gl.compileShader(shader); + + // Check the compile status + var compiled = gl.getShaderParameter(shader, gl.COMPILE_STATUS); + if (!compiled) { + // Something went wrong during compilation; get the error + var lastError = gl.getShaderInfoLog(shader); + errFn("*** Error compiling shader '" + shader + "':" + lastError); + gl.deleteShader(shader); + return null; + } + + return shader; +}; + + +/** + * Creates a program, attaches shaders, binds attrib locations, links the + * program and calls useProgram. + * @param {!Array.} shaders The shaders to attach + * @param {!Array.} optAttribs The attribs names. + * @param {!Array.} optLocations The locations for the attribs. + */ +const loadProgram = function (gl, shaders, optAttribs, optLocations) { + var program = gl.createProgram(); + for (var i = 0; i < shaders.length; ++i) { + gl.attachShader(program, shaders[i]); + } + if (optAttribs) { + for (var i = 0; i < optAttribs.length; ++i) { + gl.bindAttribLocation( + program, + optLocations ? optLocations[i] : i, + optAttribs[i]); + } + } + gl.linkProgram(program); + + // Check the link status + const linked = gl.getProgramParameter(program, gl.LINK_STATUS); + if (!linked) { + // something went wrong with the link + const lastError = gl.getProgramInfoLog(program); + error('Error in program linking:' + lastError); + + gl.deleteProgram(program); + return null; + } + return program; +}; + + +/** + * Loads a shader from a script tag. + * @param {!WebGLContext} gl The WebGLContext to use. + * @param {string} scriptId The id of the script tag. + * @param {number} optShaderType The type of shader. If not passed in it will + * be derived from the type of the script tag. + * @param {function(string): void) optErrorCallback callback for errors. + * @return {!WebGLShader} The created shader. + */ +const createShaderFromScript = function ( + gl, scriptId, optShaderType, optErrorCallback +) { + var shaderSource = ''; + var shaderType; + var shaderScript = document.getElementById(scriptId); + if (!shaderScript) { + throw new Error('*** Error: unknown script element' + scriptId); + } + shaderSource = shaderScript.text; + + if (!optShaderType) { + if (shaderScript.type === 'x-shader/x-vertex') { + shaderType = gl.VERTEX_SHADER; + } else if (shaderScript.type === 'x-shader/x-fragment') { + shaderType = gl.FRAGMENT_SHADER; + } else if ( + shaderType !== gl.VERTEX_SHADER && + shaderType !== gl.FRAGMENT_SHADER + ) { + throw new Error('*** Error: unknown shader type'); + } + } + + return loadShader( + gl, + shaderSource, + optShaderType || shaderType, + optErrorCallback + ); +}; + +{ + module.exports = { + setupWebGL : setupWebGL, + createProgram : loadProgram, + createShaderFromScript : createShaderFromScript, + getWebGLContext : getWebGLContext, + loadShader : loadShader + }; +} + +}()); +}); + +var webglUtils_1 = webglUtils.setupWebGL; +var webglUtils_2 = webglUtils.createProgram; +var webglUtils_5 = webglUtils.loadShader; + +var webglFilter = function() { + + /* + * Textures: + * 0 : raw filter + * 1 : patches + * 2 : finished response + * 3 : grad/lbp treated patches + * 4 : sobel filter + * 5 : lbp filter + * + * Routing: + * ( ) 0/4/5 --\ + * ( ) _\| + * 1 ----> ( ---------->3 ) ----------> 2 + * lbpResponse/ patchResponse + * gradientResponse + */ + + var gl, canvas; + var filterWidth, filterHeight, patchWidth, patchHeight, numPatches, canvasWidth, canvasHeight; + var patchResponseProgram, patchDrawProgram; + var fbo, numBlocks, patchTex; + var drawRectBuffer, drawLayerBuffer, drawImageBuffer, rttTexture; + var texCoordBuffer, texCoordLocation, apositionBuffer; + var newCanvasWidth, newCanvasBlockHeight, newCanvasHeight; + var drawOutRectangles, drawOutImages, drawOutLayer; + var patchCells, textureWidth, textureHeight, patchSize, patchArray; + var biases; + + var lbpResponseProgram; + var lbpTexCoordLocation, lbpTexCoordBuffer, lbpPositionLocation, lbpAPositionBuffer; + + var gradientResponseProgram; + var gbo, gradTexCoordLocation, gradTexCoordBuffer, gradPositionLocation, gradAPositionBuffer; + + var lbpInit = false; + var sobelInit = false; + var rawInit = false; + + var lbpResponseVS = [ + 'attribute vec2 a_texCoord;', + 'attribute vec2 a_position;', + '', + 'varying vec2 v_texCoord;', + '', + 'void main() {', + ' // transform coordinates to regular coordinates', + ' gl_Position = vec4(a_position,0.0,1.0);', + ' ', + ' // pass the texCoord to the fragment shader', + ' v_texCoord = a_texCoord;', + '}' + ].join('\n'); + var lbpResponseFS; + + var gradientResponseVS = [ + 'attribute vec2 a_texCoord;', + 'attribute vec2 a_position;', + '', + 'varying vec2 v_texCoord;', + '', + 'void main() {', + ' // transform coordinates to regular coordinates', + ' gl_Position = vec4(a_position,0.0,1.0);', + ' ', + ' // pass the texCoord to the fragment shader', + ' v_texCoord = a_texCoord;', + '}' + ].join('\n'); + var gradientResponseFS; + + var patchResponseVS; + var patchResponseFS; + + var drawResponsesVS = [ + 'attribute vec2 a_texCoord_draw;', + 'attribute vec2 a_position_draw;', + 'attribute float a_patchChoice_draw;', + '', + 'uniform vec2 u_resolutiondraw;', + '', + 'varying vec2 v_texCoord;', + 'varying float v_select;', + '', + 'void main() {', + ' // convert the rectangle from pixels to 0.0 to 1.0', + ' vec2 zeroToOne = a_position_draw / u_resolutiondraw;', + '', + ' // convert from 0->1 to 0->2', + ' vec2 zeroToTwo = zeroToOne * 2.0;', + '', + ' // convert from 0->2 to -1->+1 (clipspace)', + ' vec2 clipSpace = zeroToTwo - 1.0;', + ' ', + ' // transform coordinates to regular coordinates', + ' gl_Position = vec4(clipSpace * vec2(1.0, 1.0), 0, 1);', + '', + ' // pass the texCoord to the fragment shader', + ' v_texCoord = a_texCoord_draw;', + ' ', + ' v_select = a_patchChoice_draw;', + '}' + ].join('\n'); + + var drawResponsesFS = [ + 'precision mediump float;', + '', + '// our responses', + 'uniform sampler2D u_responses;', + '', + '// the texCoords passed in from the vertex shader.', + 'varying vec2 v_texCoord;', + 'varying float v_select;', + '', + 'const vec4 bit_shift = vec4(256.0*256.0*256.0, 256.0*256.0, 256.0, 1.0);', + 'const vec4 bit_mask = vec4(0.0, 1.0/256.0, 1.0/256.0, 1.0/256.0);', + '', + '// packing code from here http://stackoverflow.com/questions/9882716/packing-float-into-vec4-how-does-this-code-work', + 'void main() {', + ' vec4 colorSum = texture2D(u_responses, v_texCoord);', + ' float value = 0.0;', + ' if (v_select < 0.1) {', + ' value = colorSum[0];', + ' } else if (v_select > 0.9 && v_select < 1.1) {', + ' value = colorSum[1];', + ' } else if (v_select > 1.9 && v_select < 2.1) {', + ' value = colorSum[2];', + ' } else if (v_select > 2.9 && v_select < 3.1) {', + ' value = colorSum[3];', + ' } else {', + ' value = 1.0;', + ' }', + ' ', + ' vec4 res = fract(value * bit_shift);', + ' res -= res.xxyz * bit_mask;', + ' ', + ' //gl_FragColor = vec4(value, value, value, value);', + ' //gl_FragColor = vec4(1.0, value, 1.0, 1.0);', + ' gl_FragColor = res;', + '}' + ].join('\n'); + + this.init = function(filters, bias, nP, pW, pH, fW, fH) { + // we assume filterVector goes from left to right, rowwise, i.e. row-major order + + if (fW != fH) { + alert('filter width and height must be same size!'); + return; + } + + // if filter width is not odd, alert + if (fW % 2 == 0 || fH % 2 == 0) { + alert('filters used in svm must be of odd dimensions!'); + return; + } + + // setup variables + biases = bias; + filterWidth = fW; + filterHeight = fH; + patchWidth = pW; + patchHeight = pH; + numPatches = nP; + numBlocks = Math.floor(numPatches / 4) + Math.ceil((numPatches % 4)/4); + canvasWidth = patchWidth; + canvasHeight = patchHeight*numBlocks; + newCanvasWidth = patchWidth-filterWidth+1; + newCanvasBlockHeight = patchHeight-filterWidth+1; + newCanvasHeight = newCanvasBlockHeight*numPatches; + patchCells = (Math.floor(numPatches / 4) + Math.ceil((numPatches % 4)/4)); + textureWidth = patchWidth; + textureHeight = patchHeight*patchCells; + patchSize = patchWidth*patchHeight; + patchArray = new Float32Array(patchSize*patchCells*4); + var opp = [1/patchWidth, 1/(patchHeight*numBlocks)]; + + // write out shaders + patchResponseFS = [ + 'precision mediump float;', + '', + 'const vec2 u_onePixelPatches = vec2('+(1/patchWidth).toFixed(10)+','+(1/(patchHeight*numBlocks)).toFixed(10)+');', + 'const vec2 u_onePixelFilters = vec2('+(1/filterWidth).toFixed(10)+','+(1/(filterHeight*numBlocks)).toFixed(10)+');', + 'const float u_halffilterwidth = '+((filterWidth-1.0)/2).toFixed(1)+';', + 'const float u_halffilterheight = '+((filterHeight-1.0)/2).toFixed(1)+';', + '', + '// our patches', + 'uniform sampler2D u_patches;', + '// our filters', + 'uniform sampler2D u_filters;', + '', + '// the texCoords passed in from the vertex shader.', + 'varying vec2 v_texCoord;', + 'varying vec2 v_texCoordFilters; // this should give us correct filter', + '', + 'void main() {', + ' vec4 colorSum = vec4(0.0, 0.0, 0.0, 0.0);', + ' vec4 maxn = vec4(0.0, 0.0, 0.0, 0.0);', + ' vec4 minn = vec4(256.0, 256.0, 256.0, 256.0);', + ' vec4 scale = vec4(0.0, 0.0, 0.0, 0.0);', + ' vec4 patchValue = vec4(0.0, 0.0, 0.0, 0.0);', + ' vec4 filterValue = vec4(0.0, 0.0, 0.0, 0.0);', + ' vec4 filterTemp = vec4(0.0, 0.0, 0.0, 0.0);', + ' for (int w = 0;w < '+filterWidth+';w++) {', + ' for (int h = 0;h < '+filterHeight+';h++) {', + ' patchValue = texture2D(u_patches, v_texCoord + u_onePixelPatches * vec2(float(w)-u_halffilterwidth, float(h)-u_halffilterheight));', + ' filterValue = texture2D(u_filters, v_texCoordFilters + u_onePixelFilters * vec2(float(w)-u_halffilterwidth, float(h)-u_halffilterheight));', + ' maxn = max(patchValue, maxn);', + ' minn = min(patchValue, minn);', + ' colorSum += patchValue*filterValue;', + ' filterTemp += filterValue;', + ' } ', + ' }', + ' scale = maxn-minn;', + ' colorSum = (colorSum-(minn*filterTemp))/scale;', + ' // logistic transformation', + ' colorSum = 1.0/(1.0 + exp(- (colorSum) ));', + ' gl_FragColor = colorSum;', + '}' + ].join('\n'); + + patchResponseVS = [ + 'attribute vec2 a_texCoord;', + 'attribute vec2 a_position;', + '', + 'const vec2 u_resolution = vec2('+canvasWidth.toFixed(1)+','+canvasHeight.toFixed(1)+');', + 'const float u_patchHeight = '+(1/numBlocks).toFixed(10)+';', + 'const float u_filterHeight = '+(1/numBlocks).toFixed(10)+';', + 'const vec2 u_midpoint = vec2(0.5 ,'+(1/(numBlocks*2)).toFixed(10)+');', + '', + 'varying vec2 v_texCoord;', + 'varying vec2 v_texCoordFilters;', + '', + 'void main() {', + ' // convert the rectangle from pixels to 0.0 to 1.0', + ' vec2 zeroToOne = a_position / u_resolution;', + '', + ' // convert from 0->1 to 0->2', + ' vec2 zeroToTwo = zeroToOne * 2.0;', + '', + ' // convert from 0->2 to -1->+1 (clipspace)', + ' vec2 clipSpace = zeroToTwo - 1.0;', + ' ', + ' // transform coordinates to regular coordinates', + ' gl_Position = vec4(clipSpace * vec2(1.0, 1.0), 0, 1);', + ' ', + ' // pass the texCoord to the fragment shader', + ' v_texCoord = a_texCoord;', + ' ', + ' // set the filtertexture coordinate based on number filter to use', + ' v_texCoordFilters = u_midpoint + vec2(0.0, u_filterHeight * floor(a_texCoord[1]/u_patchHeight));', + '}' + ].join('\n'); + + if ('lbp' in filters) { + // lbpResponseFragment + lbpResponseFS = [ + 'precision mediump float;', + '', + 'uniform vec2 u_onePixelPatches;', + '', + '// our patches', + 'uniform sampler2D u_patches;', + '', + '// the texCoords passed in from the vertex shader.', + 'varying vec2 v_texCoord;', + '', + 'void main() {', + ' vec4 topLeft = texture2D(u_patches, v_texCoord + vec2(-'+opp[0].toFixed(5)+', -'+opp[1].toFixed(5)+'));', + ' vec4 topMid = texture2D(u_patches, v_texCoord + vec2(0.0, -'+opp[1].toFixed(5)+'));', + ' vec4 topRight = texture2D(u_patches, v_texCoord + vec2('+opp[0].toFixed(5)+', -'+opp[1].toFixed(5)+'));', + ' vec4 midLeft = texture2D(u_patches, v_texCoord + vec2(-'+opp[0].toFixed(5)+', 0.0));', + ' vec4 midMid = texture2D(u_patches, v_texCoord);', + ' vec4 midRight = texture2D(u_patches, v_texCoord + vec2('+opp[0].toFixed(5)+', 0.0));', + ' vec4 bottomLeft = texture2D(u_patches, v_texCoord + vec2(-'+opp[0].toFixed(5)+', '+opp[1].toFixed(5)+'));', + ' vec4 bottomMid = texture2D(u_patches, v_texCoord + vec2(0.0, '+opp[1].toFixed(5)+'));', + ' vec4 bottomRight = texture2D(u_patches, v_texCoord + vec2('+opp[0].toFixed(5)+', '+opp[1].toFixed(5)+'));', + ' vec4 lbp = step(midMid, midRight)*1.0 + step(midMid, topRight)*2.0 + step(midMid, topMid)*4.0;', + ' lbp = lbp + step(midMid, topLeft)*8.0 + step(midMid, midLeft)*16.0 + step(midMid, bottomLeft)*32.0;', + ' lbp = lbp + step(midMid, bottomMid)*64.0 + step(midMid, bottomRight)*128.0;', + ' gl_FragColor = lbp;', + '}' + ].join('\n'); + } + + if ('sobel' in filters) { + // gradResponseFragment + gradientResponseFS = [ + 'precision mediump float;', + '', + 'uniform vec2 u_onePixelPatches;', + '', + '// our patches', + 'uniform sampler2D u_patches;', + '', + '// the texCoords passed in from the vertex shader.', + 'varying vec2 v_texCoord;', + '', + 'void main() {', + ' vec4 bottomLeft = texture2D(u_patches, v_texCoord + vec2(-'+opp[0].toFixed(5)+', '+opp[1].toFixed(5)+'));', + ' vec4 bottomRight = texture2D(u_patches, v_texCoord + vec2('+opp[0].toFixed(5)+', '+opp[1].toFixed(5)+'));', + ' vec4 topLeft = texture2D(u_patches, v_texCoord + vec2(-'+opp[0].toFixed(5)+', -'+opp[1].toFixed(5)+'));', + ' vec4 topRight = texture2D(u_patches, v_texCoord + vec2('+opp[0].toFixed(5)+', -'+opp[1].toFixed(5)+'));', + ' vec4 dx = (', + ' bottomLeft +', + ' (texture2D(u_patches, v_texCoord + vec2(-'+opp[0].toFixed(5)+', 0.0))*vec4(2.0,2.0,2.0,2.0)) +', + ' topLeft -', + ' bottomRight -', + ' (texture2D(u_patches, v_texCoord + vec2('+opp[0].toFixed(5)+', 0.0))*vec4(2.0,2.0,2.0,2.0)) -', + ' topRight)/4.0;', + ' vec4 dy = (', + ' bottomLeft +', + ' (texture2D(u_patches, v_texCoord + vec2(0.0, '+opp[1].toFixed(5)+'))*vec4(2.0,2.0,2.0,2.0)) +', + ' bottomRight -', + ' topLeft -', + ' (texture2D(u_patches, v_texCoord + vec2(0.0, -'+opp[1].toFixed(5)+'))*vec4(2.0,2.0,2.0,2.0)) -', + ' topRight)/4.0;', + ' vec4 gradient = sqrt((dx*dx) + (dy*dy));', + ' gl_FragColor = gradient;', + '}' + ].join('\n'); + } + + //create webglcanvas + canvas = document.createElement('canvas'); + canvas.setAttribute('width', (patchWidth-filterWidth+1)+'px'); + canvas.setAttribute('height', ((patchHeight-filterHeight+1)*numPatches)+'px'); + canvas.setAttribute('id', 'renderCanvas'); + canvas.setAttribute('style', 'display:none;'); + //document.body.appendChild(canvas); + gl = webglUtils_1(canvas, { + premultipliedAlpha: false, + preserveDrawingBuffer : true, + antialias : false + }); + + + // check for float textures support and fail if not + if (!gl.getExtension('OES_texture_float')) { + alert('Your graphics card does not support floating point textures! :('); + return; + } + + /** insert filters into textures **/ + if ('raw' in filters) { + insertFilter(filters['raw'], gl.TEXTURE0); + rawInit = true; + } + if ('sobel' in filters) { + insertFilter(filters['sobel'], gl.TEXTURE4); + sobelInit = true; + } + if ('lbp' in filters) { + insertFilter(filters['lbp'], gl.TEXTURE5); + lbpInit = true; + } + + /** calculate vertices for calculating responses **/ + + // vertex rectangles to draw out + var rectangles = []; + var halfFilter = (filterWidth-1)/2; + var yOffset; + for (var i = 0;i < numBlocks;i++) { + yOffset = i*patchHeight; + //first triangle + rectangles = rectangles.concat([ + halfFilter, yOffset+halfFilter, + patchWidth-halfFilter, yOffset+halfFilter, + halfFilter, yOffset+patchHeight-halfFilter + ]); + //second triangle + rectangles = rectangles.concat([ + halfFilter, yOffset+patchHeight-halfFilter, + patchWidth-halfFilter, yOffset+halfFilter, + patchWidth-halfFilter, yOffset+patchHeight-halfFilter + ]); + } + rectangles = new Float32Array(rectangles); + + // image rectangles to draw out + var irectangles = []; + for (var i = 0;i < rectangles.length;i++) { + if (i % 2 == 0) { + irectangles[i] = rectangles[i]/canvasWidth; + } else { + irectangles[i] = rectangles[i]/canvasHeight; + } + } + irectangles = new Float32Array(irectangles); + + if ('lbp' in filters || 'sobel' in filters) { + var topCoord = 1.0 - 2/(patchHeight*numBlocks); + var bottomCoord = 1.0 - 2/numBlocks + 2/(patchHeight*numBlocks); + var yOffset; + // calculate position of vertex rectangles for gradient/lbp program + var gradRectangles = []; + for (var i = 0;i < numBlocks;i++) { + yOffset = i * (2/numBlocks); + //first triangle + gradRectangles = gradRectangles.concat([ + -1.0, topCoord - yOffset, + 1.0, topCoord - yOffset, + -1.0, bottomCoord - yOffset + ]); + //second triangle + gradRectangles = gradRectangles.concat([ + -1.0, bottomCoord - yOffset, + 1.0, topCoord - yOffset, + 1.0, bottomCoord - yOffset + ]); + } + gradRectangles = new Float32Array(gradRectangles); + + topCoord = 1.0 - 1/(patchHeight*numBlocks); + bottomCoord = 1.0 - 1/numBlocks + 1/(patchHeight*numBlocks); + // calculate position of image rectangles to draw out + var gradIRectangles = []; + for (var i = 0;i < numBlocks;i++) { + yOffset = i * (1/numBlocks); + //first triangle + gradIRectangles = gradIRectangles.concat([ + 0.0, topCoord - yOffset, + 1.0, topCoord - yOffset, + 0.0, bottomCoord - yOffset + ]); + //second triangle + gradIRectangles = gradIRectangles.concat([ + 0.0, bottomCoord - yOffset, + 1.0, topCoord - yOffset, + 1.0, bottomCoord - yOffset + ]); + } + gradIRectangles = new Float32Array(gradIRectangles); + } + + // vertices for drawing out responses + + // drawOutRectangles + drawOutRectangles = new Float32Array(12*numPatches); + var yOffset, indexOffset; + for (var i = 0;i < numPatches;i++) { + yOffset = i*newCanvasBlockHeight; + indexOffset = i*12; + + //first triangle + drawOutRectangles[indexOffset] = 0.0; + drawOutRectangles[indexOffset+1] = yOffset; + drawOutRectangles[indexOffset+2] = newCanvasWidth; + drawOutRectangles[indexOffset+3] = yOffset; + drawOutRectangles[indexOffset+4] = 0.0; + drawOutRectangles[indexOffset+5] = yOffset+newCanvasBlockHeight; + + //second triangle + drawOutRectangles[indexOffset+6] = 0.0; + drawOutRectangles[indexOffset+7] = yOffset+newCanvasBlockHeight; + drawOutRectangles[indexOffset+8] = newCanvasWidth; + drawOutRectangles[indexOffset+9] = yOffset; + drawOutRectangles[indexOffset+10] = newCanvasWidth; + drawOutRectangles[indexOffset+11] = yOffset+newCanvasBlockHeight; + } + + // images + drawOutImages = new Float32Array(numPatches*12); + var halfFilterWidth = ((filterWidth-1)/2)/patchWidth; + var halfFilterHeight = ((filterWidth-1)/2)/(patchHeight*patchCells); + var patchHeightT = patchHeight / (patchHeight*patchCells); + for (var i = 0;i < numPatches;i++) { + yOffset = Math.floor(i / 4)*patchHeightT; + indexOffset = i*12; + + //first triangle + drawOutImages[indexOffset] = halfFilterWidth; + drawOutImages[indexOffset+1] = yOffset+halfFilterHeight; + drawOutImages[indexOffset+2] = 1.0-halfFilterWidth; + drawOutImages[indexOffset+3] = yOffset+halfFilterHeight; + drawOutImages[indexOffset+4] = halfFilterWidth; + drawOutImages[indexOffset+5] = yOffset+patchHeightT-halfFilterHeight; + + //second triangle + drawOutImages[indexOffset+6] = halfFilterWidth; + drawOutImages[indexOffset+7] = yOffset+patchHeightT-halfFilterHeight; + drawOutImages[indexOffset+8] = 1.0-halfFilterWidth; + drawOutImages[indexOffset+9] = yOffset+halfFilterHeight; + drawOutImages[indexOffset+10] = 1.0-halfFilterWidth; + drawOutImages[indexOffset+11] = yOffset+patchHeightT-halfFilterHeight; + } + + // layer + drawOutLayer = new Float32Array(numPatches*6); + var layernum; + for (var i = 0;i < numPatches;i++) { + layernum = i % 4; + indexOffset = i*6; + drawOutLayer[indexOffset] = layernum; + drawOutLayer[indexOffset+1] = layernum; + drawOutLayer[indexOffset+2] = layernum; + drawOutLayer[indexOffset+3] = layernum; + drawOutLayer[indexOffset+4] = layernum; + drawOutLayer[indexOffset+5] = layernum; + } + + /** set up programs and load attributes etc **/ + + if ('sobel' in filters) { + var grVertexShader = webglUtils_5(gl, gradientResponseVS, gl.VERTEX_SHADER); + var grFragmentShader = webglUtils_5(gl, gradientResponseFS, gl.FRAGMENT_SHADER); + gradientResponseProgram = webglUtils_2(gl, [grVertexShader, grFragmentShader]); + gl.useProgram(gradientResponseProgram); + + // set up vertices with rectangles + gradPositionLocation = gl.getAttribLocation(gradientResponseProgram, 'a_position'); + gradAPositionBuffer = gl.createBuffer(); + gl.bindBuffer(gl.ARRAY_BUFFER, gradAPositionBuffer); + gl.bufferData(gl.ARRAY_BUFFER, gradRectangles, gl.STATIC_DRAW); + gl.enableVertexAttribArray(gradPositionLocation); + gl.vertexAttribPointer(gradPositionLocation, 2, gl.FLOAT, false, 0, 0); + + // set up texture positions + gradTexCoordLocation = gl.getAttribLocation(gradientResponseProgram, 'a_texCoord'); + gradTexCoordBuffer = gl.createBuffer(); + gl.bindBuffer(gl.ARRAY_BUFFER, gradTexCoordBuffer); + gl.bufferData(gl.ARRAY_BUFFER, gradIRectangles, gl.STATIC_DRAW); + gl.enableVertexAttribArray(gradTexCoordLocation); + gl.vertexAttribPointer(gradTexCoordLocation, 2, gl.FLOAT, false, 0, 0); + + // set up patches texture in gradientResponseProgram + gl.uniform1i(gl.getUniformLocation(gradientResponseProgram, 'u_patches'), 1); + } + if ('lbp' in filters) { + var lbpVertexShader = webglUtils_5(gl, lbpResponseVS, gl.VERTEX_SHADER); + var lbpFragmentShader = webglUtils_5(gl, lbpResponseFS, gl.FRAGMENT_SHADER); + lbpResponseProgram = webglUtils_2(gl, [lbpVertexShader, lbpFragmentShader]); + gl.useProgram(lbpResponseProgram); + + // set up vertices with rectangles + lbpPositionLocation = gl.getAttribLocation(lbpResponseProgram, 'a_position'); + lbpAPositionBuffer = gl.createBuffer(); + gl.bindBuffer(gl.ARRAY_BUFFER, lbpAPositionBuffer); + gl.bufferData(gl.ARRAY_BUFFER, gradRectangles, gl.STATIC_DRAW); + gl.enableVertexAttribArray(lbpPositionLocation); + gl.vertexAttribPointer(lbpPositionLocation, 2, gl.FLOAT, false, 0, 0); + + // set up texture positions + gradTexCoordLocation = gl.getAttribLocation(lbpResponseProgram, 'a_texCoord'); + lbpTexCoordBuffer = gl.createBuffer(); + gl.bindBuffer(gl.ARRAY_BUFFER, lbpTexCoordBuffer); + gl.bufferData(gl.ARRAY_BUFFER, gradIRectangles, gl.STATIC_DRAW); + gl.enableVertexAttribArray(lbpTexCoordLocation); + gl.vertexAttribPointer(lbpTexCoordLocation, 2, gl.FLOAT, false, 0, 0); + + // set up patches texture in lbpResponseProgram + gl.uniform1i(gl.getUniformLocation(lbpResponseProgram, 'u_patches'), 1); + } + + // setup patchdraw program + var drVertexShader = webglUtils_5(gl, drawResponsesVS, gl.VERTEX_SHADER); + var drFragmentShader = webglUtils_5(gl, drawResponsesFS, gl.FRAGMENT_SHADER); + patchDrawProgram = webglUtils_2(gl, [drVertexShader, drFragmentShader]); + gl.useProgram(patchDrawProgram); + + // set the resolution/dimension of the canvas + var resolutionLocation = gl.getUniformLocation(patchDrawProgram, 'u_resolutiondraw'); + gl.uniform2f(resolutionLocation, newCanvasWidth, newCanvasHeight); + + // set u_responses + var responsesLocation = gl.getUniformLocation(patchDrawProgram, 'u_responses'); + gl.uniform1i(responsesLocation, 2); + + // setup patchresponse program + var prVertexShader = webglUtils_5(gl, patchResponseVS, gl.VERTEX_SHADER); + var prFragmentShader = webglUtils_5(gl, patchResponseFS, gl.FRAGMENT_SHADER); + patchResponseProgram = webglUtils_2(gl, [prVertexShader, prFragmentShader]); + gl.useProgram(patchResponseProgram); + + // set up vertices with rectangles + var positionLocation = gl.getAttribLocation(patchResponseProgram, 'a_position'); + apositionBuffer = gl.createBuffer(); + gl.bindBuffer(gl.ARRAY_BUFFER, apositionBuffer); + gl.bufferData(gl.ARRAY_BUFFER, rectangles, gl.STATIC_DRAW); + gl.enableVertexAttribArray(positionLocation); + gl.vertexAttribPointer(positionLocation, 2, gl.FLOAT, false, 0, 0); + + // set up texture positions + texCoordLocation = gl.getAttribLocation(patchResponseProgram, 'a_texCoord'); + texCoordBuffer = gl.createBuffer(); + gl.bindBuffer(gl.ARRAY_BUFFER, texCoordBuffer); + gl.bufferData(gl.ARRAY_BUFFER, irectangles, gl.STATIC_DRAW); + gl.enableVertexAttribArray(texCoordLocation); + gl.vertexAttribPointer(texCoordLocation, 2, gl.FLOAT, false, 0, 0); + + if ('lbp' in filters || 'sobel' in filters) { + // set up gradient/lbp buffer (also used for lbp) + gl.activeTexture(gl.TEXTURE3); + var gradients = gl.createTexture(); + gl.bindTexture(gl.TEXTURE_2D, gradients); + gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, patchWidth, patchHeight*numBlocks, 0, gl.RGBA, gl.FLOAT, null); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST); + + // set up gradient/lbp framebuffer + gbo = gl.createFramebuffer(); + gl.bindFramebuffer(gl.FRAMEBUFFER, gbo); + gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, gradients, 0); + } + + // set up buffer to draw to + gl.activeTexture(gl.TEXTURE2); + rttTexture = gl.createTexture(); + gl.bindTexture(gl.TEXTURE_2D, rttTexture); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST); + gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, patchWidth, patchHeight*numBlocks, 0, gl.RGBA, gl.FLOAT, null); + + // set up response framebuffer + fbo = gl.createFramebuffer(); + gl.bindFramebuffer(gl.FRAMEBUFFER, fbo); + gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, rttTexture, 0); + + gl.viewport(0, 0, patchWidth, patchHeight*numBlocks); + + /* initialize some textures and buffers used later on */ + + patchTex = gl.createTexture(); + drawRectBuffer = gl.createBuffer(); + drawImageBuffer = gl.createBuffer(); + drawLayerBuffer = gl.createBuffer(); + }; + + this.getRawResponses = function(patches) { + // TODO: check patches correct length/dimension + + insertPatches(patches); + + // switch to correct program + gl.useProgram(patchResponseProgram); + + // set u_patches to point to texture 1 + gl.uniform1i(gl.getUniformLocation(patchResponseProgram, 'u_patches'), 1); + + // set u_filters to point to correct filter + gl.uniform1i(gl.getUniformLocation(patchResponseProgram, 'u_filters'), 0); + + // set up vertices with rectangles + var positionLocation = gl.getAttribLocation(patchResponseProgram, 'a_position'); + gl.bindBuffer(gl.ARRAY_BUFFER, apositionBuffer); + gl.enableVertexAttribArray(positionLocation); + gl.vertexAttribPointer(positionLocation, 2, gl.FLOAT, false, 0, 0); + + // set up texture positions + var texCoordLocation = gl.getAttribLocation(patchResponseProgram, 'a_texCoord'); + gl.bindBuffer(gl.ARRAY_BUFFER, texCoordBuffer); + gl.enableVertexAttribArray(texCoordLocation); + gl.vertexAttribPointer(texCoordLocation, 2, gl.FLOAT, false, 0, 0); + + // set framebuffer to the original one if not already using it + gl.bindFramebuffer(gl.FRAMEBUFFER, fbo); + + gl.viewport(0, 0, patchWidth, patchHeight*numBlocks); + + gl.clearColor(0.0, 0.0, 0.0, 1.0); + gl.clear(gl.COLOR_BUFFER_BIT|gl.DEPTH_BUFFER); + + // draw to framebuffer + gl.drawArrays(gl.TRIANGLES, 0, patchCells*6); + + //gl.finish(); + + var responses = drawOut('raw'); + + return responses; + }; + + this.getSobelResponses = function(patches) { + // check that it is initialized + if (!sobelInit) return; + + insertPatches(patches); + + /* do sobel filter on patches */ + + // switch to correct program + gl.useProgram(gradientResponseProgram); + + // set up vertices with rectangles + var gradPositionLocation = gl.getAttribLocation(gradientResponseProgram, 'a_position'); + gl.bindBuffer(gl.ARRAY_BUFFER, gradAPositionBuffer); + gl.enableVertexAttribArray(gradPositionLocation); + gl.vertexAttribPointer(gradPositionLocation, 2, gl.FLOAT, false, 0, 0); + + // set up texture positions + var gradTexCoordLocation = gl.getAttribLocation(gradientResponseProgram, 'a_texCoord'); + gl.bindBuffer(gl.ARRAY_BUFFER, gradTexCoordBuffer); + gl.enableVertexAttribArray(gradTexCoordLocation); + gl.vertexAttribPointer(gradTexCoordLocation, 2, gl.FLOAT, false, 0, 0); + + // set framebuffer to the original one if not already using it + gl.bindFramebuffer(gl.FRAMEBUFFER, gbo); + + gl.viewport(0, 0, patchWidth, patchHeight*numBlocks); + + gl.clearColor(0.0, 0.0, 0.0, 1.0); + gl.clear(gl.COLOR_BUFFER_BIT|gl.DEPTH_BUFFER); + + // draw to framebuffer + gl.drawArrays(gl.TRIANGLES, 0, patchCells*6); + + /* calculate responses */ + + gl.useProgram(patchResponseProgram); + + // set patches and filters to point to correct textures + gl.uniform1i(gl.getUniformLocation(patchResponseProgram, 'u_filters'), 4); + gl.uniform1i(gl.getUniformLocation(patchResponseProgram, 'u_patches'), 3); + + var positionLocation = gl.getAttribLocation(patchResponseProgram, 'a_position'); + gl.bindBuffer(gl.ARRAY_BUFFER, apositionBuffer); + gl.enableVertexAttribArray(positionLocation); + gl.vertexAttribPointer(positionLocation, 2, gl.FLOAT, false, 0, 0); + + // set up texture positions + var texCoordLocation = gl.getAttribLocation(patchResponseProgram, 'a_texCoord'); + gl.bindBuffer(gl.ARRAY_BUFFER, texCoordBuffer); + gl.enableVertexAttribArray(texCoordLocation); + gl.vertexAttribPointer(texCoordLocation, 2, gl.FLOAT, false, 0, 0); + + gl.bindFramebuffer(gl.FRAMEBUFFER, fbo); + gl.viewport(0, 0, patchWidth, patchHeight*numBlocks); + + gl.clearColor(0.0, 0.0, 0.0, 1.0); + gl.clear(gl.COLOR_BUFFER_BIT|gl.DEPTH_BUFFER); + + // draw to framebuffer + gl.drawArrays(gl.TRIANGLES, 0, patchCells*6); + + /* get the responses */ + + var responses = drawOut('sobel'); + + return responses; + }; + + this.getLBPResponses = function(patches) { + // check that it is initialized + if (!lbpInit) return; + + insertPatches(patches); + + /* do sobel filter on patches */ + + // switch to correct program + gl.useProgram(lbpResponseProgram); + + // set up vertices with rectangles + var lbpPositionLocation = gl.getAttribLocation(lbpResponseProgram, 'a_position'); + gl.bindBuffer(gl.ARRAY_BUFFER, lbpAPositionBuffer); + gl.enableVertexAttribArray(lbpPositionLocation); + gl.vertexAttribPointer(lbpPositionLocation, 2, gl.FLOAT, false, 0, 0); + + // set up texture positions + var lbpTexCoordLocation = gl.getAttribLocation(lbpResponseProgram, 'a_texCoord'); + gl.bindBuffer(gl.ARRAY_BUFFER, lbpTexCoordBuffer); + gl.enableVertexAttribArray(lbpTexCoordLocation); + gl.vertexAttribPointer(lbpTexCoordLocation, 2, gl.FLOAT, false, 0, 0); + + // set framebuffer to the original one if not already using it + gl.bindFramebuffer(gl.FRAMEBUFFER, gbo); + + gl.viewport(0, 0, patchWidth, patchHeight*numBlocks); + + gl.clearColor(0.0, 0.0, 0.0, 1.0); + gl.clear(gl.COLOR_BUFFER_BIT|gl.DEPTH_BUFFER); + + // draw to framebuffer + gl.drawArrays(gl.TRIANGLES, 0, patchCells*6); + + /* calculate responses */ + + gl.useProgram(patchResponseProgram); + + gl.uniform1i(gl.getUniformLocation(patchResponseProgram, 'u_filters'), 5); + gl.uniform1i(gl.getUniformLocation(patchResponseProgram, 'u_patches'), 3); + + var positionLocation = gl.getAttribLocation(patchResponseProgram, 'a_position'); + gl.bindBuffer(gl.ARRAY_BUFFER, apositionBuffer); + gl.enableVertexAttribArray(positionLocation); + gl.vertexAttribPointer(positionLocation, 2, gl.FLOAT, false, 0, 0); + + // set up texture positions + var texCoordLocation = gl.getAttribLocation(patchResponseProgram, 'a_texCoord'); + gl.bindBuffer(gl.ARRAY_BUFFER, texCoordBuffer); + gl.enableVertexAttribArray(texCoordLocation); + gl.vertexAttribPointer(texCoordLocation, 2, gl.FLOAT, false, 0, 0); + + gl.bindFramebuffer(gl.FRAMEBUFFER, fbo); + gl.viewport(0, 0, patchWidth, patchHeight*numBlocks); + + gl.clearColor(0.0, 0.0, 0.0, 1.0); + gl.clear(gl.COLOR_BUFFER_BIT|gl.DEPTH_BUFFER); + + // draw to framebuffer + gl.drawArrays(gl.TRIANGLES, 0, patchCells*6); + + /* get the responses */ + + var responses = drawOut('lbp'); + + return responses; + }; + + var insertPatches = function(patches) { + // pass patches into texture, each patch in either r, g, b or a + var patchArrayIndex = 0; + var patchesIndex1 = 0; + var patchesIndex2 = 0; + for (var i = 0;i < patchCells;i++) { + for (var j = 0;j < patchHeight;j++) { + for (var k = 0;k < patchWidth;k++) { + patchesIndex1 = i*4; + patchesIndex2 = (j*patchWidth) + k; + patchArrayIndex = ((patchSize*i) + patchesIndex2)*4; + + //set r with first patch + if (patchesIndex1 < numPatches) { + patchArray[patchArrayIndex] = patches[patchesIndex1][patchesIndex2]; + } else { + patchArray[patchArrayIndex] = 0; + } + //set g with 2nd patch + if (patchesIndex1+1 < numPatches) { + patchArray[patchArrayIndex + 1] = patches[patchesIndex1+1][patchesIndex2]; + } else { + patchArray[patchArrayIndex + 1] = 0; + } + //set b with 3rd patch + if (patchesIndex1+2 < numPatches) { + patchArray[patchArrayIndex + 2] = patches[patchesIndex1+2][patchesIndex2]; + } else { + patchArray[patchArrayIndex + 2] = 0; + } + //set a with 4th patch + if (patchesIndex1+3 < numPatches) { + patchArray[patchArrayIndex + 3] = patches[patchesIndex1+3][patchesIndex2]; + } else { + patchArray[patchArrayIndex + 3] = 0; + } + } + } + } + + // pass texture into an uniform + gl.activeTexture(gl.TEXTURE1); + gl.bindTexture(gl.TEXTURE_2D, patchTex); + gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, textureWidth, textureHeight, 0, gl.RGBA, gl.FLOAT, patchArray); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST); + }; + + var insertFilter = function(filter, textureNum) { + var filterSize = filterWidth*filterHeight; + var filterArray = new Float32Array(filterSize*(numBlocks)*4); + for (var i = 0;i < numBlocks;i++) { + for (var j = 0;j < filterHeight;j++) { + for (var k = 0;k < filterWidth;k++) { + //set r with first filter + if (i*4 < filter.length) { + filterArray[((filterSize*i) + (j*filterWidth) + k)*4] = filter[i*4][(j*filterWidth) + k]; + } else { + filterArray[((filterSize*i) + (j*filterWidth) + k)*4] = 0; + } + //set g with 2nd filter + if ((i*4 + 1) < filter.length) { + filterArray[((filterSize*i) + (j*filterWidth) + k)*4 + 1] = filter[(i*4)+1][(j*filterWidth) + k]; + } else { + filterArray[((filterSize*i) + (j*filterWidth) + k)*4 + 1] = 0; + } + //set b with 3rd filter + if ((i*4 + 2) < filter.length) { + filterArray[((filterSize*i) + (j*filterWidth) + k)*4 + 2] = filter[(i*4)+2][(j*filterWidth) + k]; + } else { + filterArray[((filterSize*i) + (j*filterWidth) + k)*4 + 2] = 0; + } + //set a with 4th filter + if ((i*4 + 3) < filter.length) { + filterArray[((filterSize*i) + (j*filterWidth) + k)*4 + 3] = filter[(i*4)+3][(j*filterWidth) + k]; + } else { + filterArray[((filterSize*i) + (j*filterWidth) + k)*4 + 3] = 0; + } + } + } + } + + gl.activeTexture(textureNum); + var filterTexture = gl.createTexture(); + gl.bindTexture(gl.TEXTURE_2D, filterTexture); + gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, filterWidth, filterHeight*numBlocks, 0, gl.RGBA, gl.FLOAT, filterArray); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST); + }; + + var drawOut = function(type) { + // switch programs + gl.useProgram(patchDrawProgram); + + // bind canvas buffer + gl.bindFramebuffer(gl.FRAMEBUFFER, null); + gl.viewport(0, 0, newCanvasWidth, newCanvasHeight); + + gl.clearColor(0.0, 0.0, 0.0, 1.0); + gl.clear(gl.COLOR_BUFFER_BIT|gl.DEPTH_BUFFER); + + gl.bindBuffer(gl.ARRAY_BUFFER, drawRectBuffer); + gl.bufferData( + gl.ARRAY_BUFFER, + drawOutRectangles, + gl.STATIC_DRAW); + var positionLocation = gl.getAttribLocation(patchDrawProgram, 'a_position_draw'); + gl.enableVertexAttribArray(positionLocation); + gl.vertexAttribPointer(positionLocation, 2, gl.FLOAT, false, 0, 0); + + gl.bindBuffer(gl.ARRAY_BUFFER, drawImageBuffer); + gl.bufferData( + gl.ARRAY_BUFFER, + drawOutImages, + gl.STATIC_DRAW); + var textureLocation = gl.getAttribLocation(patchDrawProgram, 'a_texCoord_draw'); + gl.enableVertexAttribArray(textureLocation); + gl.vertexAttribPointer(textureLocation, 2, gl.FLOAT, false, 0, 0); + + gl.bindBuffer(gl.ARRAY_BUFFER, drawLayerBuffer); + gl.bufferData( + gl.ARRAY_BUFFER, + drawOutLayer, + gl.STATIC_DRAW); + var layerLocation = gl.getAttribLocation(patchDrawProgram, 'a_patchChoice_draw'); + gl.enableVertexAttribArray(layerLocation); + gl.vertexAttribPointer(layerLocation, 1, gl.FLOAT, false, 0, 0); + + // draw out + gl.drawArrays(gl.TRIANGLES, 0, numPatches*6); + + var responses = getOutput(); + responses = unpackToFloat(responses); + responses = splitArray(responses, numPatches); + responses = addBias(responses, biases[type]); + + // normalize responses to lie within [0,1] + var rl = responses.length; + for (var i = 0;i < rl;i++) { + responses[i] = normalizeFilterMatrix(responses[i]); + } + + return responses; + }; + + var addBias = function(responses, bias) { + // do a little trick to add bias in the logit function + var biasMult; + for (var i = 0;i < responses.length;i++) { + biasMult = Math.exp(bias[i]); + for (var j = 0;j < responses[i].length;j++) { + responses[i][j] = 1/(1+((1-responses[i][j])/(responses[i][j]*biasMult))); + } + } + return responses; + }; + + var splitArray = function(array, parts) { + var sp = []; + var al = array.length; + var splitlength = al/parts; + var ta = []; + for (var i = 0;i < al;i++) { + if (i % splitlength == 0) { + if (i != 0) { + sp.push(ta); + } + ta = []; + } + ta.push(array[i]); + } + sp.push(ta); + return sp; + }; + + var getOutput = function() { + // get data + var pixelValues = new Uint8Array(4*canvas.width*canvas.height); + gl.readPixels(0, 0, canvas.width, canvas.height, gl.RGBA, gl.UNSIGNED_BYTE, pixelValues); + return pixelValues; + }; + + var unpackToFloat = function(array) { + // convert packed floats to proper floats : see http://stackoverflow.com/questions/9882716/packing-float-into-vec4-how-does-this-code-work + var newArray = []; + var al = array.length; + for (var i = 0;i < al;i+=4) { + newArray[(i / 4) >> 0] = ((array[i]/(256*256*256*256))+(array[i+1]/(256*256*256))+(array[i+2]/(256*256))+(array[i+3]/256)); + } + return newArray; + }; + + var normalizeFilterMatrix = function(response) { + // normalize responses to lie within [0,1] + var msize = response.length; + var max = 0; + var min = 1; + + for (var i = 0;i < msize;i++) { + max = response[i] > max ? response[i] : max; + min = response[i] < min ? response[i] : min; + } + var dist = max-min; + + if (dist == 0) { + //console.log('a patchresponse was monotone, causing normalization to fail. Leaving it unchanged.'); + response = response.map(function() {return 1}); + } else { + for (var i = 0;i < msize;i++) { + response[i] = (response[i]-min)/dist; + } + } + + return response; + }; +}; + +var mosseFilterResponses = function() { + + var filters = []; + var responses = []; + var num_Patches = 0; + + this.init = function(filter_input, numPatches, filterWidth, filterHeight) { + // load filters, make fft ready + + for (var i = 0;i < numPatches;i++) { + var temp = {}; + temp.width = filterWidth; + temp.height = filterHeight; + var filterLength = filterWidth*filterHeight; + var flar_fi0 = new Float64Array(filterLength); + var flar_fi1 = new Float64Array(filterLength); + for (var j = 0;j < filterLength;j++) { + flar_fi0[j] = filter_input[i][0][j]; + flar_fi1[j] = filter_input[i][1][j]; + } + temp.real = flar_fi0; + temp.imag = flar_fi1; + filters[i] = new mosse.mosseFilter(); + filters[i].load(temp); + } + + num_Patches = numPatches; + }; + + this.getResponses = function(patches) { + for (var i = 0;i < num_Patches;i++) { + responses[i] = filters[i].getResponse(patches[i]); + //responses[i] = logisticResponse(responses[i]); + responses[i] = normalizeFilterMatrix(responses[i]); + } + + return responses; + }; + + var logisticResponse = function(response) { + // create probability by doing logistic transformation + var filter_size = response.length; + for (var j = 0;j < filter_size;j++) { + response[j] = 1.0/(1.0 + Math.exp(- (response[j]-1.0) )); + } + return response; + }; + + var normalizeFilterMatrix = function(response) { + // normalize responses to lie within [0,1] + var msize = response.length; + var max = 0; + var min = 1; + + for (var i = 0;i < msize;i++) { + max = response[i] > max ? response[i] : max; + min = response[i] < min ? response[i] : min; + } + var dist = max-min; + + if (dist == 0) { + console.log('a patchresponse was monotone, causing normalization to fail. Leaving it unchanged.'); + response = response.map(function() {return 1}); + } else { + for (var i = 0;i < msize;i++) { + response[i] = (response[i]-min)/dist; + } + } + + return response; + }; +}; + +var model_pca_20_svm = createCommonjsModule(function (module, exports) { +(function (global) { + 'use strict'; + + var pModel = { + "scoring": { + "size": [20, 22], + "bias": -1.3971, + "coef": [-0.019443, -0.0084627, -0.005644, -0.0030633, 0.0050582, 0.0038672, 0.0073781, 0.0084088, 0.002108, 0.0088022, 0.0084634, 0.0091342, 0.0021678, 0.0057906, 0.010027, 0.010018, 0.011075, -0.00061696, -0.006084, -0.0094488, -0.012441, -0.003865, -0.0003105, 0.0031879, 0.0078183, 0.01096, 0.012101, 0.012289, 0.012872, 0.01342, 0.012863, 0.01257, 0.014429, 0.013339, 0.013248, 0.012998, 0.0080562, 0.001467, -0.011928, -0.0097909, -0.019951, -0.014602, -0.013175, -0.0060515, -0.0010407, 0.0054651, 0.010449, 0.014061, 0.015918, 0.016361, 0.021757, 0.017301, 0.014195, 0.012452, 0.010454, 0.0040883, 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[54.022, 62.36], + [57.236, 62.972], + [60.423, 62.234], + [65.181, 63.223], + [69.509, 65.977], + [66.693, 69.861], + [62.797, 72.43], + [57.439, 73.279], + [52.051, 72.642], + [48.057, 70.228], + [51.313, 68.335], + [57.355, 69.042], + [63.365, 68.097], + [63.303, 65.106], + [57.283, 65.373], + [51.258, 65.343], + [56.997, 50.867], + [38.345, 33.38], + [45.432, 33.213], + [45.103, 36.388], + [38.617, 36.562], + [74.947, 32.659], + [67.858, 32.771], + [68.312, 35.931], + [74.8, 35.849] + ] + }, + "hints": { + "rightEye": [71.382, 34.031], + "leftEye": [41.961, 34.611], + "nose": [56.997, 50.867] + } + }; + + // CommonJS and Node.js module support + { + // Support Node.js specific `module.exports` (which can be a function) + if ('object' !== 'undefined' && module.exports) { + exports = module.exports = pModel; + } + // But always support CommonJS module 1.1.1 spec (`exports` cannot be a function) + exports.pModel = pModel; + } +})(commonjsGlobal); +}); + +// webgl setup tests + +/* + * Test whether we can render to floating point texture + */ +var canRenderToFloatTexture = function(webGLContext) { + var renderingSupported = false; + var gl = webGLContext; + + // setup the texture + var texture = gl.createTexture(); + gl.bindTexture(gl.TEXTURE_2D, texture); + gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 2, 2, 0, gl.RGBA, gl.FLOAT, null); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST); + + // setup the framebuffer + var framebuffer = gl.createFramebuffer(); + gl.bindFramebuffer(gl.FRAMEBUFFER, framebuffer); + gl.framebufferTexture2D( + gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture, 0); + + // check the framebuffer + var check = gl.checkFramebufferStatus(gl.FRAMEBUFFER); + if (check == gl.FRAMEBUFFER_COMPLETE) { + renderingSupported = true; + } + + // cleanup + gl.deleteTexture(texture); + gl.deleteFramebuffer(framebuffer); + gl.bindTexture(gl.TEXTURE_2D, null); + gl.bindFramebuffer(gl.FRAMEBUFFER, null); + + return renderingSupported +}; + +var version = "1.1.2"; + +/** + * clmtrackr library (https://www.github.com/auduno/clmtrackr/) + * + * Copyright (c) 2013, Audun Mathias Øygard + * + * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +//import { drawPatches } from './utils.debugging.js'; + +var DEFAULT_MODEL = model_pca_20_svm; + +// polyfills +raf_1.polyfill(); +if (!window.Promise) window.Promise = promise; + +var clm = { + tracker : function(params) { + + if (!params) params = {}; + if (params.constantVelocity === undefined) params.constantVelocity = true; + if (params.searchWindow === undefined) params.searchWindow = 11; + if (params.useWebGL === undefined) params.useWebGL = true; + if (params.scoreThreshold === undefined) params.scoreThreshold = 0.5; + if (params.stopOnConvergence === undefined) params.stopOnConvergence = false; + if (params.weightPoints === undefined) params.weightPoints = undefined; + if (params.sharpenResponse === undefined) params.sharpenResponse = false; + if (params.faceDetection === undefined) params.faceDetection = {}; + if (params.eventDispatcher === undefined) params.eventDispatcher = document; + if (params.maxIterationsPerAnimFrame === undefined) params.maxIterationsPerAnimFrame = 3; + + /** @type {Number} Minimum convergence before firing `clmtrackrConverged` event. */ + var convergenceThreshold = 0.5; + + var numPatches, patchSize, numParameters, patchType; + var gaussianPD; + var eigenVectors, eigenValues; + var sketchCC, sketchW, sketchH, sketchCanvas; + var weights, model, biases; + + var sobelInit = false; + var lbpInit = false; + + var currentParameters = []; + var currentPositions = []; + var previousParameters = []; + var previousPositions = []; + + var patches = []; + var responses = []; + var meanShape = []; + + var responseMode = 'single'; + var responseList = ['raw']; + var responseIndex = 0; + + /* + It's possible to experiment with the sequence of variances used for the finding the maximum in the KDE. + This sequence is pretty arbitrary, but was found to be okay using some manual testing. + */ + var varianceSeq = [10,5,1]; + //var varianceSeq = [3,1.5,0.75]; + //var varianceSeq = [6,3,0.75]; + var PDMVariance = 0.7; + + var relaxation = 0.1; + + var first = true; + var detectingFace = false; + + var convergenceLimit = 0.01; + + var searchWindow; + var modelWidth, modelHeight; + var halfSearchWindow, vecProbs, responsePixels; + + if(typeof Float64Array !== 'undefined') { + var updatePosition = new Float64Array(2); + var vecpos = new Float64Array(2); + } else { + var updatePosition = new Array(2); + var vecpos = new Array(2); + } + var pw, pl, pdataLength; + + var facecheck_count = 0; + + var webglFi, svmFi, mosseCalc; + + var scoringCanvas = document.createElement('canvas'); + var scoringContext = scoringCanvas.getContext('2d'); + var msxmin, msymin, msxmax, msymax; + var msmodelwidth, msmodelheight; + var scoringWeights, scoringBias; + var scoringHistory = []; + var meanscore = 0; + + var runnerTimeout, runnerElement, runnerBox; + + var pointWeights; + + var halfPI = Math.PI/2; + + var faceDetector; + + /* + * load model data, initialize filters, etc. + * + * @param pdm model object + */ + this.init = function(pdmmodel) { + // default model is pca 20 svm model + if (pdmmodel === undefined) pdmmodel = DEFAULT_MODEL; + + model = pdmmodel; + + // load from model + patchType = model.patchModel.patchType; + numPatches = model.patchModel.numPatches; + patchSize = model.patchModel.patchSize[0]; + if (patchType == 'MOSSE') { + searchWindow = patchSize; + } else { + searchWindow = params.searchWindow; + } + numParameters = model.shapeModel.numEvalues; + modelWidth = model.patchModel.canvasSize[0]; + modelHeight = model.patchModel.canvasSize[1]; + + // set up canvas to work on + sketchCanvas = document.createElement('canvas'); + sketchCC = sketchCanvas.getContext('2d'); + + sketchW = sketchCanvas.width = modelWidth + (searchWindow-1) + patchSize-1; + sketchH = sketchCanvas.height = modelHeight + (searchWindow-1) + patchSize-1; + + // load eigenvectors + eigenVectors = numeric1_2_6.rep([numPatches*2,numParameters],0.0); + for (var i = 0;i < numPatches*2;i++) { + for (var j = 0;j < numParameters;j++) { + eigenVectors[i][j] = model.shapeModel.eigenVectors[i][j]; + } + } + + // load mean shape + for (var i = 0; i < numPatches;i++) { + meanShape[i] = [model.shapeModel.meanShape[i][0], model.shapeModel.meanShape[i][1]]; + } + + // get max and mins, width and height of meanshape + msxmax = msymax = 0; + msxmin = msymin = 1000000; + for (var i = 0;i < numPatches;i++) { + if (meanShape[i][0] < msxmin) msxmin = meanShape[i][0]; + if (meanShape[i][1] < msymin) msymin = meanShape[i][1]; + if (meanShape[i][0] > msxmax) msxmax = meanShape[i][0]; + if (meanShape[i][1] > msymax) msymax = meanShape[i][1]; + } + msmodelwidth = msxmax-msxmin; + msmodelheight = msymax-msymin; + + // get scoringweights if they exist + if (model.scoring) { + scoringWeights = new Float64Array(model.scoring.coef); + scoringBias = model.scoring.bias; + scoringCanvas.width = model.scoring.size[0]; + scoringCanvas.height = model.scoring.size[1]; + } + + // load eigenvalues + eigenValues = model.shapeModel.eigenValues; + + weights = model.patchModel.weights; + biases = model.patchModel.bias; + + // precalculate gaussianPriorDiagonal + gaussianPD = numeric1_2_6.rep([numParameters+4, numParameters+4],0); + // set values and append manual inverse + for (var i = 0;i < numParameters;i++) { + if (model.shapeModel.nonRegularizedVectors.indexOf(i) >= 0) { + gaussianPD[i+4][i+4] = 1/10000000; + } else { + gaussianPD[i+4][i+4] = 1/eigenValues[i]; + } + } + + for (var i = 0;i < numParameters+4;i++) { + currentParameters[i] = 0; + } + + if (patchType == 'SVM') { + var webGLContext; + var webGLTestCanvas = document.createElement('canvas'); + if (window.WebGLRenderingContext) { + webGLContext = webGLTestCanvas.getContext('webgl') || webGLTestCanvas.getContext('experimental-webgl'); + if (!webGLContext || !webGLContext.getExtension('OES_texture_float')) { + webGLContext = null; + } else { + // test whether it's possible to render to float texture + if (!canRenderToFloatTexture(webGLContext)) { + webGLContext = null; + } + } + } + + if (webGLContext && params.useWebGL && (typeof(webglFilter) !== 'undefined')) { + webglFi = new webglFilter(); + try { + webglFi.init(weights, biases, numPatches, searchWindow+patchSize-1, searchWindow+patchSize-1, patchSize, patchSize); + if ('lbp' in weights) lbpInit = true; + if ('sobel' in weights) sobelInit = true; + } + catch(err) { + console.error(err); + alert('There was a problem setting up webGL programs, falling back to slightly slower javascript version. :('); + webglFi = undefined; + svmFi = new svmFilter(); + svmFi.init(weights['raw'], biases['raw'], numPatches, patchSize, searchWindow); + } + } else if (typeof(svmFilter) !== 'undefined') { + // use fft convolution if no webGL is available + svmFi = new svmFilter(); + svmFi.init(weights['raw'], biases['raw'], numPatches, patchSize, searchWindow); + } else { + throw new Error('Could not initiate filters, please make sure that svmfilter.js or svmfilter_conv_js.js is loaded.'); + } + } else if (patchType == 'MOSSE') { + mosseCalc = new mosseFilterResponses(); + mosseCalc.init(weights, numPatches, patchSize, patchSize); + } + + if (patchType == 'SVM') { + pw = pl = patchSize+searchWindow-1; + } else { + pw = pl = searchWindow; + } + pdataLength = pw*pl; + halfSearchWindow = (searchWindow-1)/2; + responsePixels = searchWindow*searchWindow; + if(typeof Float64Array !== 'undefined') { + vecProbs = new Float64Array(responsePixels); + for (var i = 0;i < numPatches;i++) { + patches[i] = new Float64Array(pdataLength); + } + } else { + vecProbs = new Array(responsePixels); + for (var i = 0;i < numPatches;i++) { + patches[i] = new Array(pdataLength); + } + } + + if (params.weightPoints) { + // weighting of points + pointWeights = []; + for (var i = 0;i < numPatches;i++) { + if (i in params.weightPoints) { + pointWeights[(i*2)] = params.weightPoints[i]; + pointWeights[(i*2)+1] = params.weightPoints[i]; + } else { + pointWeights[(i*2)] = 1; + pointWeights[(i*2)+1] = 1; + } + } + pointWeights = numeric1_2_6.diag(pointWeights); + } + + faceDetector = new faceDetection(model, params.faceDetection); + }; + + /* + * starts the tracker to run on a regular interval + */ + this.start = function(element, box) { + // check if model is initalized, else return false + if (typeof(model) === 'undefined') { + console.log('tracker needs to be initalized before starting to track.'); + return false; + } + //check if a runnerelement already exists, if not, use passed parameters + if (typeof(runnerElement) === 'undefined') { + runnerElement = element; + runnerBox = box; + } + + faceDetector.init(element); + + // start named timeout function + runnerTimeout = requestAnimationFrame(runnerFunction); + }; + + var runnerFunction = function() { + runnerTimeout = requestAnimationFrame(runnerFunction); + // schedule as many iterations as we can during each request + var startTime = (new Date()).getTime(); + var run_counter = 0; + + while ((((new Date()).getTime() - startTime) < 16) + && run_counter < params.maxIterationsPerAnimFrame) { + var tracking = this.track(runnerElement, runnerBox); + if (!tracking) break; + run_counter++; + } + }.bind(this); + + /* + * stop the running tracker + */ + this.stop = function() { + // stop the running tracker if any exists + cancelAnimationFrame(runnerTimeout); + }; + + /* + * element : canvas or video element + * TODO: should be able to take img element as well + */ + this.track = function(element, box) { + emitEvent('clmtrackrBeforeTrack', params.eventDispatcher); + + var scaling, translateX, translateY, rotation; + var ptch, px, py; + + if (first) { + if (!detectingFace) { + detectingFace = true; + + // this returns a Promise + faceDetector.getInitialPosition(box) + .then(function (result) { + scaling = result[0]; + rotation = result[1]; + translateX = result[2]; + translateY = result[3]; + + currentParameters[0] = (scaling*Math.cos(rotation))-1; + currentParameters[1] = (scaling*Math.sin(rotation)); + currentParameters[2] = translateX; + currentParameters[3] = translateY; + + currentPositions = calculatePositions(currentParameters, true); + + first = false; + detectingFace = false; + }) + .catch(function (error) { + // send an event on no face found + emitEvent('clmtrackrNotFound', params.eventDispatcher); + + detectingFace = false; + }); + } + + return false; + } else { + facecheck_count += 1; + + if (params.constantVelocity) { + // calculate where to get patches via constant velocity prediction + if (previousParameters.length >= 2) { + for (var i = 0;i < currentParameters.length;i++) { + currentParameters[i] = (relaxation)*previousParameters[1][i] + (1-relaxation)*((2*previousParameters[1][i]) - previousParameters[0][i]); + //currentParameters[i] = (3*previousParameters[2][i]) - (3*previousParameters[1][i]) + previousParameters[0][i]; + } + } + } + + // change translation, rotation and scale parameters + rotation = halfPI - Math.atan((currentParameters[0]+1)/currentParameters[1]); + if (rotation > halfPI) { + rotation -= Math.PI; + } + scaling = currentParameters[1] / Math.sin(rotation); + translateX = currentParameters[2]; + translateY = currentParameters[3]; + } + + // copy canvas to a new dirty canvas + sketchCC.save(); + + // clear canvas + sketchCC.clearRect(0, 0, sketchW, sketchH); + + sketchCC.scale(1/scaling, 1/scaling); + sketchCC.rotate(-rotation); + sketchCC.translate(-translateX, -translateY); + + sketchCC.drawImage(element, 0, 0, element.width, element.height); + + sketchCC.restore(); + // get cropped images around new points based on model parameters (not scaled and translated) + var patchPositions = calculatePositions(currentParameters, false); + + // check whether tracking is ok + if (scoringWeights && (facecheck_count % 10 == 0)) { + if (!checkTracking()) { + // reset all parameters + resetParameters(); + + // send event to signal that tracking was lost + emitEvent('clmtrackrLost', params.eventDispatcher); + + return false; + } + } + + + var pdata, pmatrix, grayscaleColor; + for (var i = 0; i < numPatches; i++) { + px = patchPositions[i][0]-(pw/2); + py = patchPositions[i][1]-(pl/2); + ptch = sketchCC.getImageData(Math.round(px), Math.round(py), pw, pl); + pdata = ptch.data; + + // convert to grayscale + pmatrix = patches[i]; + for (var j = 0;j < pdataLength;j++) { + grayscaleColor = pdata[j*4]*0.3 + pdata[(j*4)+1]*0.59 + pdata[(j*4)+2]*0.11; + pmatrix[j] = grayscaleColor; + } + } + + // draw weights for debugging + //drawPatches(sketchCC, weights, patchSize, patchPositions, function(x) {return x*2000+127}); + + // draw patches for debugging + //drawPatches(sketchCC, patches, pw, patchPositions, false, [27,32,44,50]); + + if (patchType == 'SVM') { + if (typeof(webglFi) !== 'undefined') { + responses = getWebGLResponses(patches); + } else if (typeof(svmFi) !== 'undefined') { + responses = svmFi.getResponses(patches); + } else { + throw new Error('SVM-filters do not seem to be initiated properly.'); + } + } else if (patchType == 'MOSSE') { + responses = mosseCalc.getResponses(patches); + } + + // option to increase sharpness of responses + if (params.sharpenResponse) { + for (var i = 0;i < numPatches;i++) { + for (var j = 0;j < responses[i].length;j++) { + responses[i][j] = Math.pow(responses[i][j], params.sharpenResponse); + } + } + } + + // draw responses for debugging + //drawPatches(sketchCC, responses, searchWindow, patchPositions, function(x) {return x*255}); + + // iterate until convergence or max 10, 20 iterations?: + var originalPositions = currentPositions; + var jac; + var meanshiftVectors = []; + + for (var i = 0; i < varianceSeq.length; i++) { + + // calculate jacobian + jac = createJacobian(currentParameters, eigenVectors); + + // for debugging + //var debugMVs = []; + + var opj0, opj1; + + for (var j = 0;j < numPatches;j++) { + opj0 = originalPositions[j][0]-((searchWindow-1)*scaling/2); + opj1 = originalPositions[j][1]-((searchWindow-1)*scaling/2); + + // calculate PI x gaussians + var vpsum = gpopt(searchWindow, currentPositions[j], updatePosition, vecProbs, responses, opj0, opj1, j, varianceSeq[i], scaling); + + // calculate meanshift-vector + gpopt2(searchWindow, vecpos, updatePosition, vecProbs, vpsum, opj0, opj1, scaling); + //var debugMatrixMV = gpopt2(searchWindow, vecpos, updatePosition, vecProbs, vpsum, opj0, opj1); + + meanshiftVectors[j] = [vecpos[0] - currentPositions[j][0], vecpos[1] - currentPositions[j][1]]; + + //debugMVs[j] = debugMatrixMV; + } + + // draw meanshiftVector for debugging + //drawPatches(sketchCC, debugMVs, searchWindow, patchPositions, function(x) {return x*255*500}); + + var meanShiftVector = numeric1_2_6.rep([numPatches*2, 1],0.0); + for (var k = 0;k < numPatches;k++) { + meanShiftVector[k*2][0] = meanshiftVectors[k][0]; + meanShiftVector[(k*2)+1][0] = meanshiftVectors[k][1]; + } + + // compute pdm parameter update + //var prior = numeric.mul(gaussianPD, PDMVariance); + var prior = numeric1_2_6.mul(gaussianPD, varianceSeq[i]); + var jtj; + if (params.weightPoints) { + jtj = numeric1_2_6.dot(numeric1_2_6.transpose(jac), numeric1_2_6.dot(pointWeights, jac)); + } else { + jtj = numeric1_2_6.dot(numeric1_2_6.transpose(jac), jac); + } + var cpMatrix = numeric1_2_6.rep([numParameters+4, 1],0.0); + for (var l = 0;l < (numParameters+4);l++) { + cpMatrix[l][0] = currentParameters[l]; + } + var priorP = numeric1_2_6.dot(prior, cpMatrix); + var jtv; + if (params.weightPoints) { + jtv = numeric1_2_6.dot(numeric1_2_6.transpose(jac), numeric1_2_6.dot(pointWeights, meanShiftVector)); + } else { + jtv = numeric1_2_6.dot(numeric1_2_6.transpose(jac), meanShiftVector); + } + var paramUpdateLeft = numeric1_2_6.add(prior, jtj); + var paramUpdateRight = numeric1_2_6.sub(priorP, jtv); + + var paramUpdate = numeric1_2_6.dot(numeric1_2_6.inv(paramUpdateLeft), paramUpdateRight); + //var paramUpdate = numeric.solve(paramUpdateLeft, paramUpdateRight, true); + + var oldPositions = currentPositions; + + // update estimated parameters + for (var k = 0;k < numParameters+4;k++) { + currentParameters[k] -= paramUpdate[k]; + } + + // clipping of parameters if they're too high + var clip; + for (var k = 0;k < numParameters;k++) { + clip = Math.abs(3*Math.sqrt(eigenValues[k])); + if (Math.abs(currentParameters[k+4]) > clip) { + if (currentParameters[k+4] > 0) { + currentParameters[k+4] = clip; + } else { + currentParameters[k+4] = -clip; + } + } + + } + + // update current coordinates + currentPositions = calculatePositions(currentParameters, true); + + // check if converged + // calculate norm of parameterdifference + var positionNorm = 0; + var pnsq_x, pnsq_y; + for (var k = 0;k < currentPositions.length;k++) { + pnsq_x = (currentPositions[k][0]-oldPositions[k][0]); + pnsq_y = (currentPositions[k][1]-oldPositions[k][1]); + positionNorm += ((pnsq_x*pnsq_x) + (pnsq_y*pnsq_y)); + } + + // if norm < limit, then break + if (positionNorm < convergenceLimit) { + break; + } + + } + + if (params.constantVelocity) { + // add current parameter to array of previous parameters + previousParameters.push(currentParameters.slice()); + if (previousParameters.length == 3) { + previousParameters.shift(); + } + } + + // store positions, for checking convergence + if (previousPositions.length == 10) { + previousPositions.shift(); + } + previousPositions.push(currentPositions.slice(0)); + + // send an event on each iteration + emitEvent('clmtrackrIteration', params.eventDispatcher); + + // we must get a score before we can say we've converged + if (scoringHistory.length >= 5 && this.getConvergence() < convergenceThreshold) { + if (params.stopOnConvergence) { + this.stop(); + } + + emitEvent('clmtrackrConverged', params.eventDispatcher); + } + + // return new points + return currentPositions; + }; + + function resetParameters() { + first = true; + scoringHistory = []; + previousParameters = []; + currentPositions = []; + previousPositions = []; + for (var i = 0;i < currentParameters.length;i++) { + currentParameters[i] = 0; + } + } + + /* + * reset tracking, so that track() will start a new detection + */ + this.reset = function() { + resetParameters(); + runnerElement = undefined; + runnerBox = undefined; + }; + + /* + * draw model on given canvas + */ + this.draw = function(canvas, pv, path) { + // if no previous points, just draw in the middle of canvas + + var params; + if (pv === undefined) { + params = currentParameters.slice(0); + } else { + params = pv.slice(0); + } + + var cc = canvas.getContext('2d'); + cc.fillStyle = 'rgb(200,200,200)'; + cc.strokeStyle = 'rgb(130,255,50)'; + //cc.lineWidth = 1; + + var paths; + if (path === undefined) { + paths = model.path.normal; + } else { + paths = model.path[path]; + } + + for (var i = 0;i < paths.length;i++) { + if (typeof(paths[i]) == 'number') { + drawPoint(cc, paths[i], params); + } else { + drawPath(cc, paths[i], params); + } + } + }; + + /* + * get the score of the current model fit + * (based on svm of face according to current model) + */ + this.getScore = function() { + return meanscore; + }; + + /* + * calculate positions based on parameters + */ + this.calculatePositions = function(parameters) { + return calculatePositions(parameters, true); + }; + + /* + * get coordinates of current model fit + */ + this.getCurrentPosition = function() { + if (first) { + return false; + } else { + return currentPositions; + } + }; + + /* + * get parameters of current model fit + */ + this.getCurrentParameters = function() { + return currentParameters; + }; + + /* + * Get the average of recent model movements + * Used for checking whether model fit has converged + */ + this.getConvergence = function() { + if (previousPositions.length < 10) return 999999; + + var prevX = 0.0; + var prevY = 0.0; + var currX = 0.0; + var currY = 0.0; + + // average 5 previous positions + for (var i = 0;i < 5;i++) { + for (var j = 0;j < numPatches;j++) { + prevX += previousPositions[i][j][0]; + prevY += previousPositions[i][j][1]; + } + } + prevX /= 5; + prevY /= 5; + + // average 5 positions before that + for (var i = 5;i < 10;i++) { + for (var j = 0;j < numPatches;j++) { + currX += previousPositions[i][j][0]; + currY += previousPositions[i][j][1]; + } + } + currX /= 5; + currY /= 5; + + // calculate difference + var diffX = currX-prevX; + var diffY = currY-prevY; + var msavg = ((diffX*diffX) + (diffY*diffY)); + msavg /= previousPositions.length; + return msavg; + }; + + /* + * Set response mode (only useful if webGL is available) + * mode : either "single", "blend" or "cycle" + * list : array of values "raw", "sobel", "lbp" + */ + this.setResponseMode = function(mode, list) { + // clmtrackr must be initialized with model first + if (typeof(model) === 'undefined') { + console.log('Clmtrackr has not been initialized with a model yet. No changes made.'); + return; + } + // must check whether webGL or not + if (typeof(webglFi) === 'undefined') { + console.log('Responsemodes are only allowed when using webGL. In pure JS, only "raw" mode is available.'); + return; + } + if (['single', 'blend', 'cycle'].indexOf(mode) < 0) { + console.log('Tried to set an unknown responsemode : "'+mode+'". No changes made.'); + return; + } + if (!(list instanceof Array)) { + console.log('List in setResponseMode must be an array of strings! No changes made.'); + return; + } else { + for (var i = 0;i < list.length;i++) { + if (['raw', 'sobel', 'lbp'].indexOf(list[i]) < 0) { + console.log('Unknown element in responsemode list : "'+list[i]+'". No changes made.'); + } + // check whether filters are initialized + if (list[i] == 'sobel' && sobelInit == false) { + console.log('The sobel filters have not been initialized! No changes made.'); + } + if (list[i] == 'lbp' && lbpInit == false) { + console.log('The LBP filters have not been initialized! No changes made.'); + } + } + } + // reset index + responseIndex = 0; + responseMode = mode; + responseList = list; + }; + + + var getWebGLResponsesType = function(type, patches) { + if (type == 'lbp') { + return webglFi.getLBPResponses(patches); + } else if (type == 'raw') { + return webglFi.getRawResponses(patches); + } else if (type == 'sobel') { + return webglFi.getSobelResponses(patches); + } + }; + + var getWebGLResponses = function(patches) { + if (responseMode == 'single') { + return getWebGLResponsesType(responseList[0], patches); + } else if (responseMode == 'cycle') { + var response = getWebGLResponsesType(responseList[responseIndex], patches); + responseIndex++; + if (responseIndex >= responseList.length) responseIndex = 0; + return response; + } else { + // blend + var responses = []; + for (var i = 0;i < responseList.length;i++) { + responses[i] = getWebGLResponsesType(responseList[i], patches); + } + var blendedResponses = []; + var searchWindowSize = searchWindow * searchWindow; + for (var i = 0;i < numPatches;i++) { + var response = Array(searchWindowSize); + for (var k = 0;k < searchWindowSize;k++) response[k] = 0; + for (var j = 0;j < responseList.length;j++) { + for (var k = 0;k < searchWindowSize;k++) { + response[k] += (responses[j][i][k]/responseList.length); + } + } + blendedResponses[i] = response; + } + return blendedResponses; + } + }; + + // generates the jacobian matrix used for optimization calculations + var createJacobian = function(parameters, eigenVectors) { + + var jacobian = numeric1_2_6.rep([2*numPatches, numParameters+4],0.0); + var j0,j1; + for (var i = 0;i < numPatches;i ++) { + // 1 + j0 = meanShape[i][0]; + j1 = meanShape[i][1]; + for (var p = 0;p < numParameters;p++) { + j0 += parameters[p+4]*eigenVectors[i*2][p]; + j1 += parameters[p+4]*eigenVectors[(i*2)+1][p]; + } + jacobian[i*2][0] = j0; + jacobian[(i*2)+1][0] = j1; + // 2 + j0 = meanShape[i][1]; + j1 = meanShape[i][0]; + for (var p = 0;p < numParameters;p++) { + j0 += parameters[p+4]*eigenVectors[(i*2)+1][p]; + j1 += parameters[p+4]*eigenVectors[i*2][p]; + } + jacobian[i*2][1] = -j0; + jacobian[(i*2)+1][1] = j1; + // 3 + jacobian[i*2][2] = 1; + jacobian[(i*2)+1][2] = 0; + // 4 + jacobian[i*2][3] = 0; + jacobian[(i*2)+1][3] = 1; + // the rest + for (var j = 0;j < numParameters;j++) { + j0 = parameters[0]*eigenVectors[i*2][j] - parameters[1]*eigenVectors[(i*2)+1][j] + eigenVectors[i*2][j]; + j1 = parameters[0]*eigenVectors[(i*2)+1][j] + parameters[1]*eigenVectors[i*2][j] + eigenVectors[(i*2)+1][j]; + jacobian[i*2][j+4] = j0; + jacobian[(i*2)+1][j+4] = j1; + } + } + + return jacobian; + }; + + // calculate positions from parameters + var calculatePositions = function(parameters, useTransforms) { + var x, y, a, b; + var numParameters = parameters.length; + var positions = []; + for (var i = 0;i < numPatches;i++) { + x = meanShape[i][0]; + y = meanShape[i][1]; + for (var j = 0;j < numParameters-4;j++) { + x += model.shapeModel.eigenVectors[(i*2)][j]*parameters[j+4]; + y += model.shapeModel.eigenVectors[(i*2)+1][j]*parameters[j+4]; + } + if (useTransforms) { + a = parameters[0]*x - parameters[1]*y + parameters[2]; + b = parameters[0]*y + parameters[1]*x + parameters[3]; + x += a; + y += b; + } + positions[i] = [x,y]; + } + + return positions; + }; + + // part one of meanshift calculation + var gpopt = function(responseWidth, currentPositionsj, updatePosition, vecProbs, responses, opj0, opj1, j, variance, scaling) { + var pos_idx = 0; + var vpsum = 0; + var dx, dy; + for (var k = 0;k < responseWidth;k++) { + updatePosition[1] = opj1+(k*scaling); + for (var l = 0;l < responseWidth;l++) { + updatePosition[0] = opj0+(l*scaling); + + dx = currentPositionsj[0] - updatePosition[0]; + dy = currentPositionsj[1] - updatePosition[1]; + vecProbs[pos_idx] = responses[j][pos_idx] * Math.exp(-0.5*((dx*dx)+(dy*dy))/(variance*scaling)); + + vpsum += vecProbs[pos_idx]; + pos_idx++; + } + } + + return vpsum; + }; + + // part two of meanshift calculation + var gpopt2 = function(responseWidth, vecpos, updatePosition, vecProbs, vpsum, opj0, opj1, scaling) { + //for debugging + //var vecmatrix = []; + + var pos_idx = 0; + var vecsum = 0; + vecpos[0] = 0; + vecpos[1] = 0; + for (var k = 0;k < responseWidth;k++) { + updatePosition[1] = opj1+(k*scaling); + for (var l = 0;l < responseWidth;l++) { + updatePosition[0] = opj0+(l*scaling); + vecsum = vecProbs[pos_idx]/vpsum; + + //vecmatrix[k*responseWidth + l] = vecsum; + + vecpos[0] += vecsum*updatePosition[0]; + vecpos[1] += vecsum*updatePosition[1]; + pos_idx++; + } + } + //return vecmatrix; + }; + + // calculate score of current fit + var checkTracking = function() { + var trackingImgW = 20; + var trackingImgH = 22; + + scoringContext.drawImage(sketchCanvas, Math.round(msxmin+(msmodelwidth/4.5)), Math.round(msymin-(msmodelheight/12)), Math.round(msmodelwidth-(msmodelwidth*2/4.5)), Math.round(msmodelheight-(msmodelheight/12)), 0, 0, trackingImgW, trackingImgH); + // getImageData of canvas + var imgData = scoringContext.getImageData(0,0,trackingImgW,trackingImgH); + // convert data to grayscale + var trackingImgSize = trackingImgW * trackingImgH; + var scoringData = new Array(trackingImgSize); + var scdata = imgData.data; + var scmax = 0; + for (var i = 0;i < trackingImgSize;i++) { + scoringData[i] = scdata[i*4]*0.3 + scdata[(i*4)+1]*0.59 + scdata[(i*4)+2]*0.11; + scoringData[i] = Math.log(scoringData[i]+1); + if (scoringData[i] > scmax) scmax = scoringData[i]; + } + + if (scmax > 0) { + // normalize & multiply by svmFilter + var mean = 0; + for (var i = 0;i < trackingImgSize;i++) { + mean += scoringData[i]; + } + mean /= trackingImgSize; + var sd = 0; + for (var i = 0;i < trackingImgSize;i++) { + sd += (scoringData[i]-mean)*(scoringData[i]-mean); + } + sd /= trackingImgSize; + sd = Math.sqrt(sd); + + var score = 0; + for (var i = 0;i < trackingImgSize;i++) { + scoringData[i] = (scoringData[i]-mean)/sd; + score += (scoringData[i])*scoringWeights[i]; + } + score += scoringBias; + score = 1/(1+Math.exp(-score)); + + if (scoringHistory.length == 5) { + scoringHistory.shift(); + } + scoringHistory.push(score); + + if (scoringHistory.length > 4) { + // get average + meanscore = 0; + for (var i = 0;i < 5;i++) { + meanscore += scoringHistory[i]; + } + meanscore /= 5; + // if below threshold, then reset (return false) + if (meanscore < params.scoreThreshold) return false; + } + } + return true; + }; + + // draw a parametrized line on a canvas + var drawPath = function(canvasContext, path, dp) { + canvasContext.beginPath(); + var i, x, y, a, b; + for (var p = 0;p < path.length;p++) { + i = path[p]*2; + x = meanShape[i/2][0]; + y = meanShape[i/2][1]; + for (var j = 0;j < numParameters;j++) { + x += model.shapeModel.eigenVectors[i][j]*dp[j+4]; + y += model.shapeModel.eigenVectors[i+1][j]*dp[j+4]; + } + a = dp[0]*x - dp[1]*y + dp[2]; + b = dp[0]*y + dp[1]*x + dp[3]; + x += a; + y += b; + + if (i == 0) { + canvasContext.moveTo(x,y); + } else { + canvasContext.lineTo(x,y); + } + } + canvasContext.moveTo(0,0); + canvasContext.closePath(); + canvasContext.stroke(); + }; + + // draw a point on a canvas + function drawPoint(canvasContext, point, dp) { + var i, x, y, a, b; + i = point*2; + x = meanShape[i/2][0]; + y = meanShape[i/2][1]; + for (var j = 0;j < numParameters;j++) { + x += model.shapeModel.eigenVectors[i][j]*dp[j+4]; + y += model.shapeModel.eigenVectors[i+1][j]*dp[j+4]; + } + a = dp[0]*x - dp[1]*y + dp[2]; + b = dp[0]*y + dp[1]*x + dp[3]; + x += a; + y += b; + canvasContext.beginPath(); + canvasContext.arc(x, y, 1, 0, Math.PI*2, true); + canvasContext.closePath(); + canvasContext.fill(); + } + + return true; + }, + version : version +}; + +return clm; + +}))); diff --git a/www/build/clmtrackr.min.js b/www/build/clmtrackr.min.js new file mode 100644 index 0000000..34033b8 --- /dev/null +++ b/www/build/clmtrackr.min.js @@ -0,0 +1 @@ +!function(global,factory){"object"==typeof 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ret},numeric.ops2={add:"+",sub:"-",mul:"*",div:"/",mod:"%",and:"&&",or:"||",eq:"===",neq:"!==",lt:"<",gt:">",leq:"<=",geq:">=",band:"&",bor:"|",bxor:"^",lshift:"<<",rshift:">>",rrshift:">>>"},numeric.opseq={addeq:"+=",subeq:"-=",muleq:"*=",diveq:"/=",modeq:"%=",lshifteq:"<<=",rshifteq:">>=",rrshifteq:">>>=",bandeq:"&=",boreq:"|=",bxoreq:"^="},numeric.mathfuns=["abs","acos","asin","atan","ceil","cos","exp","floor","log","round","sin","sqrt","tan","isNaN","isFinite"],numeric.mathfuns2=["atan2","pow","max","min"],numeric.ops1={neg:"-",not:"!",bnot:"~",clone:""},numeric.mapreducers={any:["if(xi) return true;","var accum = false;"],all:["if(!xi) return false;","var accum = true;"],sum:["accum += xi;","var accum = 0;"],prod:["accum *= xi;","var accum = 1;"],norm2Squared:["accum += xi*xi;","var accum = 0;"],norminf:["accum = max(accum,abs(xi));","var accum = 0, max = Math.max, abs = Math.abs;"],norm1:["accum += abs(xi)","var accum = 0, abs = Math.abs;"],sup:["accum = max(accum,xi);","var accum = -Infinity, max = Math.max;"],inf:["accum = min(accum,xi);","var accum = Infinity, min = Math.min;"]},function(){var i,o;for(i=0;iv0&&(i0=i,v0=k);for(Aj=A[i0],A[i0]=A[j],A[j]=Aj,Ij=I[i0],I[i0]=I[j],I[j]=Ij,x=Aj[j],k=j;k!==n;++k)Aj[k]/=x;for(k=n-1;-1!==k;--k)Ij[k]/=x;for(i=m-1;-1!==i;--i)if(i!==j){for(Ai=A[i],Ii=I[i],x=Ai[j],k=j+1;k!==n;++k)Ai[k]-=Aj[k]*x;for(k=n-1;k>0;--k)Ii[k]-=Ij[k]*x,Ii[--k]-=Ij[k]*x;0===k&&(Ii[0]-=Ij[0]*x)}}return I},numeric.det=function(x){var s=numeric.dim(x);if(2!==s.length||s[0]!==s[1])throw new Error("numeric: det() only works on square matrices");var i,j,k,Aj,Ai,alpha,temp,k1,n=s[0],ret=1,A=numeric.clone(x);for(j=0;jMath.abs(A[k][j])&&(k=i);for(k!==j&&(temp=A[k],A[k]=A[j],A[j]=temp,ret*=-1),Aj=A[j],i=j+1;i=1;i-=2){for(A1=x[i],A0=x[i-1],j=n-1;j>=1;--j)(Bj=ret[j])[i]=A1[j],Bj[i-1]=A0[j],(Bj=ret[--j])[i]=A1[j],Bj[i-1]=A0[j];0===j&&((Bj=ret[0])[i]=A1[0],Bj[i-1]=A0[0])}if(0===i){for(A0=x[0],j=n-1;j>=1;--j)ret[j][0]=A0[j],ret[--j][0]=A0[j];0===j&&(ret[0][0]=A0[0])}return ret},numeric.negtranspose=function(x){var i,j,A0,A1,Bj,m=x.length,n=x[0].length,ret=Array(n);for(j=0;j=1;i-=2){for(A1=x[i],A0=x[i-1],j=n-1;j>=1;--j)(Bj=ret[j])[i]=-A1[j],Bj[i-1]=-A0[j],(Bj=ret[--j])[i]=-A1[j],Bj[i-1]=-A0[j];0===j&&((Bj=ret[0])[i]=-A1[0],Bj[i-1]=-A0[0])}if(0===i){for(A0=x[0],j=n-1;j>=1;--j)ret[j][0]=-A0[j],ret[--j][0]=-A0[j];0===j&&(ret[0][0]=-A0[0])}return ret},numeric._random=function _random(s,k){var i,rnd,n=s[k],ret=Array(n);if(k===s.length-1){for(rnd=Math.random,i=n-1;i>=1;i-=2)ret[i]=rnd(),ret[i-1]=rnd();return 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i,j,Bi,AI,m=I.length,n=J.length,B=Array(m);for(i=m-1;-1!==i;--i)for(B[i]=Array(n),Bi=B[i],AI=A[I[i]],j=n-1;-1!==j;--j)Bi[j]=AI[J[j]];return B},numeric.blockMatrix=function(X){var s=numeric.dim(X);if(s.length<4)return numeric.blockMatrix([X]);var M,N,i,j,Xij,m=s[0],n=s[1];for(M=0,N=0,i=0;i=0;i--){for(Ai=Array(n),xi=x[i],j=n-1;j>=3;--j)Ai[j]=xi*y[j],Ai[--j]=xi*y[j],Ai[--j]=xi*y[j],Ai[--j]=xi*y[j];for(;j>=0;)Ai[j]=xi*y[j],--j;A[i]=Ai}return A},numeric.T=function(x,y){this.x=x,this.y=y},numeric.t=function(x,y){return new numeric.T(x,y)},numeric.Tbinop=function(rr,rc,cr,cc,setup){var k;numeric.indexOf;if("string"!=typeof setup)for(k in setup="",numeric)numeric.hasOwnProperty(k)&&(rr.indexOf(k)>=0||rc.indexOf(k)>=0||cr.indexOf(k)>=0||cc.indexOf(k)>=0)&&k.length>1&&(setup+="var "+k+" = numeric."+k+";\n");return Function(["y"],"var x = this;\nif(!(y instanceof numeric.T)) { y = new numeric.T(y); }\n"+setup+"\nif(x.y) { if(y.y) { return new numeric.T("+cc+");\n }\n return new numeric.T("+cr+");\n}\nif(y.y) {\n return new numeric.T("+rc+");\n}\nreturn new numeric.T("+rr+");\n")},numeric.T.prototype.add=numeric.Tbinop("add(x.x,y.x)","add(x.x,y.x),y.y","add(x.x,y.x),x.y","add(x.x,y.x),add(x.y,y.y)"),numeric.T.prototype.sub=numeric.Tbinop("sub(x.x,y.x)","sub(x.x,y.x),neg(y.y)","sub(x.x,y.x),x.y","sub(x.x,y.x),sub(x.y,y.y)"),numeric.T.prototype.mul=numeric.Tbinop("mul(x.x,y.x)","mul(x.x,y.x),mul(x.x,y.y)","mul(x.x,y.x),mul(x.y,y.x)","sub(mul(x.x,y.x),mul(x.y,y.y)),add(mul(x.x,y.y),mul(x.y,y.x))"),numeric.T.prototype.reciprocal=function(){var mul=numeric.mul,div=numeric.div;if(this.y){var d=numeric.add(mul(this.x,this.x),mul(this.y,this.y));return new numeric.T(div(this.x,d),div(numeric.neg(this.y),d))}return new T(div(1,this.x))},numeric.T.prototype.div=function(y){if(y instanceof numeric.T||(y=new numeric.T(y)),y.y)return this.mul(y.reciprocal());var div=numeric.div;return this.y?new numeric.T(div(this.x,y.x),div(this.y,y.x)):new numeric.T(div(this.x,y.x))},numeric.T.prototype.dot=numeric.Tbinop("dot(x.x,y.x)","dot(x.x,y.x),dot(x.x,y.y)","dot(x.x,y.x),dot(x.y,y.x)","sub(dot(x.x,y.x),dot(x.y,y.y)),add(dot(x.x,y.y),dot(x.y,y.x))"),numeric.T.prototype.transpose=function(){var t=numeric.transpose,x=this.x,y=this.y;return y?new numeric.T(t(x),t(y)):new numeric.T(t(x))},numeric.T.prototype.transjugate=function(){var t=numeric.transpose,x=this.x,y=this.y;return y?new numeric.T(t(x),numeric.negtranspose(y)):new numeric.T(t(x))},numeric.Tunop=function(r,c,s){return"string"!=typeof s&&(s=""),Function("var x = this;\n"+s+"\nif(x.y) { "+c+";\n}\n"+r+";\n")},numeric.T.prototype.exp=numeric.Tunop("return new numeric.T(ex)","return new numeric.T(mul(cos(x.y),ex),mul(sin(x.y),ex))","var ex = numeric.exp(x.x), cos = numeric.cos, sin = numeric.sin, mul = numeric.mul;"),numeric.T.prototype.conj=numeric.Tunop("return new numeric.T(x.x);","return new numeric.T(x.x,numeric.neg(x.y));"),numeric.T.prototype.neg=numeric.Tunop("return new numeric.T(neg(x.x));","return new numeric.T(neg(x.x),neg(x.y));","var neg = numeric.neg;"),numeric.T.prototype.sin=numeric.Tunop("return new numeric.T(numeric.sin(x.x))","return x.exp().sub(x.neg().exp()).div(new numeric.T(0,2));"),numeric.T.prototype.cos=numeric.Tunop("return new numeric.T(numeric.cos(x.x))","return x.exp().add(x.neg().exp()).div(2);"),numeric.T.prototype.abs=numeric.Tunop("return new numeric.T(numeric.abs(x.x));","return new numeric.T(numeric.sqrt(numeric.add(mul(x.x,x.x),mul(x.y,x.y))));","var mul = numeric.mul;"),numeric.T.prototype.log=numeric.Tunop("return new numeric.T(numeric.log(x.x));","var theta = new numeric.T(numeric.atan2(x.y,x.x)), r = x.abs();\nreturn new numeric.T(numeric.log(r.x),theta.x);"),numeric.T.prototype.norm2=numeric.Tunop("return numeric.norm2(x.x);","var f = numeric.norm2Squared;\nreturn Math.sqrt(f(x.x)+f(x.y));"),numeric.T.prototype.inv=function(){var A=this;if(void 0===A.y)return new numeric.T(numeric.inv(A.x));var Aix,Aiy,Ajx,Ajy,Rix,Riy,Rjx,Rjy,i,j,k,d,d1,ax,ay,bx,by,temp,n=A.x.length,Rx=numeric.identity(n),Ry=numeric.rep([n,n],0),Ax=numeric.clone(A.x),Ay=numeric.clone(A.y);for(i=0;id&&(k=j,d=d1);for(k!==i&&(temp=Ax[i],Ax[i]=Ax[k],Ax[k]=temp,temp=Ay[i],Ay[i]=Ay[k],Ay[k]=temp,temp=Rx[i],Rx[i]=Rx[k],Rx[k]=temp,temp=Ry[i],Ry[i]=Ry[k],Ry[k]=temp),Aix=Ax[i],Aiy=Ay[i],Rix=Rx[i],Riy=Ry[i],ax=Aix[i],ay=Aiy[i],j=i+1;j0;i--)for(Rix=Rx[i],Riy=Ry[i],j=i-1;j>=0;j--)for(Rjx=Rx[j],Rjy=Ry[j],ax=Ax[j][i],ay=Ay[j][i],k=n-1;k>=0;k--)bx=Rix[k],by=Riy[k],Rjx[k]-=ax*bx-ay*by,Rjy[k]-=ax*by+ay*bx;return new numeric.T(Rx,Ry)},numeric.T.prototype.get=function(i){var ik,x=this.x,y=this.y,k=0,n=i.length;if(y){for(;k=0?1:-1)*numeric.norm2(x);v[0]+=alpha;var foo=numeric.norm2(v);if(0===foo)throw new Error("eig: internal error");return numeric.div(v,foo)},numeric.toUpperHessenberg=function(me){var s=numeric.dim(me);if(2!==s.length||s[0]!==s[1])throw new Error("numeric: toUpperHessenberg() only works on square matrices");var i,j,k,x,v,B,C,Ai,Ci,Qi,m=s[0],A=numeric.clone(me),Q=numeric.identity(m);for(j=0;j0){for(v=numeric.house(x),B=numeric.getBlock(A,[j+1,j],[m-1,m-1]),C=numeric.tensor(v,numeric.dot(v,B)),i=j+1;i=4*det)s1=.5*(tr+Math.sqrt(tr*tr-4*det)),s2=.5*(tr-Math.sqrt(tr*tr-4*det)),Hloc=numeric.add(numeric.sub(numeric.dot(Hloc,Hloc),numeric.mul(Hloc,s1+s2)),numeric.diag(numeric.rep([3],s1*s2)));else Hloc=numeric.add(numeric.sub(numeric.dot(Hloc,Hloc),numeric.mul(Hloc,tr)),numeric.diag(numeric.rep([3],det)));for(x=[Hloc[0][0],Hloc[1][0],Hloc[2][0]],v=numeric.house(x),B=[H[0],H[1],H[2]],C=numeric.tensor(v,numeric.dot(v,B)),i=0;i<3;i++)for(Hi=H[i],Ci=C[i],k=0;k=0?((n1=(a-(x=p1<0?-.5*(p1-sqrt(disc)):-.5*(p1+sqrt(disc))))*(a-x)+b*b)>(n2=c*c+(d-x)*(d-x))?(p=(a-x)/(n1=sqrt(n1)),q=b/n1):(p=c/(n2=sqrt(n2)),q=(d-x)/n2),Q0=new T([[q,-p],[p,q]]),Q.setRows(i,j,Q0.dot(Q.getRows(i,j)))):(x=-.5*p1,y=.5*sqrt(-disc),(n1=(a-x)*(a-x)+b*b)>(n2=c*c+(d-x)*(d-x))?(p=(a-x)/(n1=sqrt(n1+y*y)),q=b/n1,x=0,y/=n1):(p=c/(n2=sqrt(n2+y*y)),q=(d-x)/n2,x=y/n2,y=0),Q0=new T([[q,-p],[p,q]],[[x,y],[y,-x]]),Q.setRows(i,j,Q0.dot(Q.getRows(i,j))))}var R=Q.dot(A).dot(Q.transjugate()),E=(n=A.length,numeric.T.identity(n));for(j=0;j0)for(k=j-1;k>=0;k--){var Rk=R.get([k,k]),Rj=R.get([j,j]);numeric.neq(Rk.x,Rj.x)||numeric.neq(Rk.y,Rj.y)?(x=R.getRow(k).getBlock([k],[j-1]),y=E.getRow(j).getBlock([k],[j-1]),E.set([j,k],R.get([k,j]).neg().sub(x.dot(y)).div(Rk.sub(Rj)))):E.setRow(j,E.getRow(k))}for(j=0;j=counts.length;)counts[counts.length]=0;0!==foo[j]&&counts[j]++}var n=counts.length,Ai=Array(n+1);for(Ai[0]=0,i=0;i=k11){if(xj[n]=j[m],0===m)return;++n,km=k[--m],k11=k1[m]}else 0===x[foo=Pinv[Aj[km]]]?(x[foo]=1,k[m]=km,j[++m]=foo,km=Ai[foo],k1[m]=k11=Ai[foo+1]):++km},numeric.ccsLPSolve=function(A,B,x,xj,I,Pinv,dfs){var i,i0,i1,j,j0,j1,k,l,a,Ai=A[0],Aj=A[1],Av=A[2],Bi=(Ai.length,B[0]),Bj=B[1],Bv=B[2];for(i0=Bi[I],i1=Bi[I+1],xj.length=0,i=i0;ia&&(e=k,a=c);for(abs(x[i])=k11){if(xj[n]=Pinv[j[m]],0===m)return;++n,km=k[--m],k11=k1[m]}else 0===x[foo=Aj[km]]?(x[foo]=1,k[m]=km,j[++m]=foo,km=Ai[foo=Pinv[foo]],k1[m]=k11=Ai[foo+1]):++km}},numeric.ccsLPSolve0=function(A,B,y,xj,I,Pinv,P,dfs){var i,i0,i1,j,j0,j1,k,l,a,Ai=A[0],Aj=A[1],Av=A[2],Bi=(Ai.length,B[0]),Bj=B[1],Bv=B[2];for(i0=Bi[I],i1=Bi[I+1],xj.length=0,i=i0;ia&&(e=k,a=c);for(abs(y[P[i]])ret[k]&&(ret[k]=A.length),A)A.hasOwnProperty(i)&&dim(A[i],ret,k+1);return ret},numeric.sclone=function clone(A,k,n){void 0===k&&(k=0),void 0===n&&(n=numeric.sdim(A).length);var i,ret=Array(A.length);if(k===n-1){for(i in A)A.hasOwnProperty(i)&&(ret[i]=A[i]);return ret}for(i in A)A.hasOwnProperty(i)&&(ret[i]=clone(A[i],k+1,n));return ret},numeric.sdiag=function(d){var i,i1,n=d.length,ret=Array(n);for(i=n-1;i>=1;i-=2)i1=i-1,ret[i]=[],ret[i][i]=d[i],ret[i1]=[],ret[i1][i1]=d[i1];return 0===i&&(ret[0]=[],ret[0][0]=d[i]),ret},numeric.sidentity=function(n){return numeric.sdiag(numeric.rep([n],1))},numeric.stranspose=function(A){var i,j,Ai,ret=[];A.length;for(i in A)if(A.hasOwnProperty(i))for(j in Ai=A[i])Ai.hasOwnProperty(j)&&("object"!=typeof ret[j]&&(ret[j]=[]),ret[j][i]=Ai[j]);return ret},numeric.sLUP=function(A,tol){throw new Error("The function numeric.sLUP had a bug in it and has been removed. Please use the new numeric.ccsLUP function instead.")},numeric.sdotMM=function(A,B){var Ai,BTk,i,j,k,accum,reti,p=A.length,BT=(B.length,numeric.stranspose(B)),r=BT.length,ret=Array(p);for(i=p-1;i>=0;i--){for(reti=[],Ai=A[i],k=r-1;k>=0;k--){for(j in accum=0,BTk=BT[k],Ai)Ai.hasOwnProperty(j)&&j in BTk&&(accum+=Ai[j]*BTk[j]);accum&&(reti[k]=accum)}ret[i]=reti}return ret},numeric.sdotMV=function(A,x){var Ai,i,j,accum,p=A.length,ret=Array(p);for(i=p-1;i>=0;i--){for(j in accum=0,Ai=A[i])Ai.hasOwnProperty(j)&&x[j]&&(accum+=Ai[j]*x[j]);accum&&(ret[i]=accum)}return ret},numeric.sdotVM=function(x,A){var i,j,Ai,alpha,ret=[];for(i in x)if(x.hasOwnProperty(i))for(j in Ai=A[i],alpha=x[i],Ai)Ai.hasOwnProperty(j)&&(ret[j]||(ret[j]=0),ret[j]+=alpha*Ai[j]);return ret},numeric.sdotVV=function(x,y){var i,ret=0;for(i in x)x[i]&&y[i]&&(ret+=x[i]*y[i]);return ret},numeric.sdot=function(A,B){var m=numeric.sdim(A).length,n=numeric.sdim(B).length;switch(1e3*m+n){case 0:return A*B;case 1001:return numeric.sdotVV(A,B);case 2001:return numeric.sdotMV(A,B);case 1002:return numeric.sdotVM(A,B);case 2002:return numeric.sdotMM(A,B);default:throw new Error("numeric.sdot not implemented for tensors of order "+m+" and "+n)}},numeric.sscatter=function(V){var Vij,i,j,Aj,n=V[0].length,m=V.length,A=[];for(i=n-1;i>=0;--i)if(V[m-1][i]){for(Aj=A,j=0;j=0;--i)ret[i]=[];for(i=n;i>=0;--i)ret[i].push(k[i]);ret[n+1].push(Ai)}}else gather(Ai,ret,k);return k.length>n&&k.pop(),ret},numeric.cLU=function(A){var i,j,k,a,b,c,I=A[0],J=A[1],V=A[2],p=I.length,m=0;for(i=0;im&&(m=I[i]);m++;var alpha,L=Array(m),U=Array(m),left=numeric.rep([m],1/0),right=numeric.rep([m],-1/0);for(k=0;kright[i]&&(right[i]=j);for(i=0;iright[i+1]&&(right[i+1]=right[i]);for(i=m-1;i>=1;i--)left[i]=0;i--){for(;Uj[k]>i;)ret[i]-=Uv[k]*ret[Uj[k]],k--;ret[i]/=Uv[k],k--}return ret},numeric.cgrid=function(n,shape){"number"==typeof n&&(n=[n,n]);var i,j,count,ret=numeric.rep(n,-1);if("function"!=typeof shape)switch(shape){case"L":shape=function(i,j){return i>=n[0]/2||jN&&(N=Ai[k]);for(N++,ret=numeric.rep([N],0),k=0;k1;)x[mid=floor((p+q)/2)]<=x0?p=mid:q=mid;return this._at(x0,p)}n=x0.length;var i,ret=Array(n);for(i=n-1;-1!==i;--i)ret[i]=this.at(x0[i]);return ret},numeric.Spline.prototype.diff=function(){var i,dx,dy,x=this.x,yl=this.yl,yr=this.yr,kl=this.kl,kr=this.kr,n=yl.length,zl=kl,zr=kr,pl=Array(n),pr=Array(n),add=numeric.add,mul=numeric.mul,div=numeric.div,sub=numeric.sub;for(i=n-1;-1!==i;--i)dx=x[i+1]-x[i],dy=sub(yr[i+1],yl[i]),pl[i]=div(add(mul(dy,6),mul(kl[i],-4*dx),mul(kr[i+1],-2*dx)),dx*dx),pr[i+1]=div(add(mul(dy,-6),mul(kl[i],2*dx),mul(kr[i+1],4*dx)),dx*dx);return new numeric.Spline(x,zl,zr,pl,pr)},numeric.Spline.prototype.roots=function(){function sqr(x){return x*x}var ret=[],x=this.x,yl=this.yl,yr=this.yr,kl=this.kl,kr=this.kr;"number"==typeof yl[0]&&(yl=[yl],yr=[yr],kl=[kl],kr=[kr]);var i,j,k,ai,bi,ci,di,ri,k0,k1,y0,y1,A,B,D,dx,stops,z0,z1,zm,t0,t1,tm,m=yl.length,n=x.length-1,sqrt=(ret=Array(m),Math.sqrt);for(i=0;i!==m;++i){for(ai=yl[i],bi=yr[i],ci=kl[i],di=kr[i],ri=[],j=0;j!==n;j++){for(j>0&&bi[j]*ai[j]<0&&ri.push(x[j]),dx=x[j+1]-x[j],x[j],y0=ai[j],y1=bi[j+1],k0=ci[j]/dx,A=(k1=di[j+1]/dx)+3*y0+2*k0-3*y1,B=3*(k1+k0+2*(y0-y1)),(D=sqr(k0-k1+3*(y0-y1))+12*k1*y0)<=0?stops=(z0=A/B)>x[j]&&z0x[j]&&z0x[j]&&z10)t0=t1,z0=z1;else{for(var side=0;!((tm=(z0*t1-z1*t0)/(z0-z1))<=t0||tm>=t1);)if((zm=this._at(tm,j))*z1>0)t1=tm,z1=zm,-1===side&&(z0*=.5),side=-1;else{if(!(zm*z0>0))break;t0=tm,z0=zm,1===side&&(z1*=.5),side=1}ri.push(tm),t0=stops[k+1],z0=this._at(t0,j)}else ri.push(t0),t0=t1,z0=z1;0===z1&&ri.push(t1)}ret[i]=ri}return"number"==typeof this.yl[0]?ret[0]:ret},numeric.spline=function(x,y,k1,kn){var i,n=x.length,b=[],dx=[],dy=[],sub=numeric.sub,mul=numeric.mul,add=numeric.add;for(i=n-2;i>=0;i--)dx[i]=x[i+1]-x[i],dy[i]=sub(y[i+1],y[i]);"string"!=typeof k1&&"string"!=typeof kn||(k1=kn="periodic");var T=[[],[],[]];switch(typeof k1){case"undefined":b[0]=mul(3/(dx[0]*dx[0]),dy[0]),T[0].push(0,0),T[1].push(0,1),T[2].push(2/dx[0],1/dx[0]);break;case"string":b[0]=add(mul(3/(dx[n-2]*dx[n-2]),dy[n-2]),mul(3/(dx[0]*dx[0]),dy[0])),T[0].push(0,0,0),T[1].push(n-2,0,1),T[2].push(1/dx[n-2],2/dx[n-2]+2/dx[0],1/dx[0]);break;default:b[0]=k1,T[0].push(0),T[1].push(0),T[2].push(1)}for(i=1;i20)throw new Error("Numerical gradient fails");if(x0[i]=x[i]+h,f1=f(x0),x0[i]=x[i]-h,f2=f(x0),x0[i]=x[i],isNaN(f1)||isNaN(f2))h/=16;else{if(J[i]=(f1-f2)/(2*h),t0=x[i]-h,t1=x[i],t2=x[i]+h,d1=(f1-f0)/h,d2=(f0-f2)/h,N=max(abs(J[i]),abs(f0),abs(f1),abs(f2),abs(t0),abs(t1),abs(t2),1e-8),!(min(max(abs(d1-J[i]),abs(d2-J[i]),abs(d1-d2))/N,h/N)>.001))break;h/=16}}return J},numeric.uncmin=function(f,x0,tol,gradient,maxit,callback,options){var grad=numeric.gradient;void 0===options&&(options={}),void 0===tol&&(tol=1e-8),void 0===gradient&&(gradient=function(x){return grad(f,x)}),void 0===maxit&&(maxit=1e3);var f1,df0,n=(x0=numeric.clone(x0)).length,f0=f(x0);if(isNaN(f0))throw new Error("uncmin: f(x0) is a NaN!");var max=Math.max,norm2=numeric.norm2;tol=max(tol,numeric.epsilon);var step,g0,g1,s,x1,y,Hy,ys,t,nstep,H1=options.Hinv||numeric.identity(n),dot=numeric.dot,sub=(numeric.inv,numeric.sub),add=numeric.add,ten=numeric.tensor,div=numeric.div,mul=numeric.mul,all=numeric.all,isfinite=numeric.isFinite,neg=numeric.neg,it=0,msg="";for(g0=gradient(x0);it=.1*t*df0||isNaN(f1));)t*=.5,++it;if(t*nstep1;)x0[k=floor(.5*(i+j))]<=x?i=k:j=k;return this._at(x,i)},numeric.dopri=function(x0,x1,y0,f,tol,maxit,event){void 0===tol&&(tol=1e-6),void 0===maxit&&(maxit=1e3);var k2,k3,k4,k5,k6,k7,er,j,y1,erinf,e0,e1,ev,xs=[x0],ys=[y0],k1=[f(x0,y0)],ymid=[],A3=[.075,.225],A4=[44/45,-56/15,32/9],A5=[19372/6561,-25360/2187,64448/6561,-212/729],A6=[9017/3168,-355/33,46732/5247,49/176,-5103/18656],b=[35/384,0,500/1113,125/192,-2187/6784,11/84],bm=[.10013431883002395,0,.3918321794184259,-.02982460176594817,.05893268337240795,-.04497888809104361,.023904308236133973],c=[.2,.3,.8,8/9,1,1],e=[-71/57600,0,71/16695,-71/1920,17253/339200,-22/525,.025],i=0,h=(x1-x0)/10,it=0,add=numeric.add,mul=numeric.mul,min=(Math.max,Math.min),abs=Math.abs,norminf=numeric.norminf,pow=Math.pow,any=numeric.any,lt=numeric.lt,and=numeric.and,ret=(numeric.sub,new numeric.Dopri(xs,ys,k1,ymid,-1,""));for("function"==typeof event&&(e0=event(x0,y0));x0x1&&(h=x1-x0),k2=f(x0+c[0]*h,add(y0,mul(.2*h,k1[i]))),k3=f(x0+c[1]*h,add(add(y0,mul(A3[0]*h,k1[i])),mul(A3[1]*h,k2))),k4=f(x0+c[2]*h,add(add(add(y0,mul(A4[0]*h,k1[i])),mul(A4[1]*h,k2)),mul(A4[2]*h,k3))),k5=f(x0+c[3]*h,add(add(add(add(y0,mul(A5[0]*h,k1[i])),mul(A5[1]*h,k2)),mul(A5[2]*h,k3)),mul(A5[3]*h,k4))),k6=f(x0+c[4]*h,add(add(add(add(add(y0,mul(A6[0]*h,k1[i])),mul(A6[1]*h,k2)),mul(A6[2]*h,k3)),mul(A6[3]*h,k4)),mul(A6[4]*h,k5))),k7=f(x0+h,y1=add(add(add(add(add(y0,mul(k1[i],h*b[0])),mul(k3,h*b[2])),mul(k4,h*b[3])),mul(k5,h*b[4])),mul(k6,h*b[5]))),(erinf="number"==typeof(er=add(add(add(add(add(mul(k1[i],h*e[0]),mul(k3,h*e[2])),mul(k4,h*e[3])),mul(k5,h*e[4])),mul(k6,h*e[5])),mul(k7,h*e[6])))?abs(er):norminf(er))>tol){if(x0+(h=.2*h*pow(tol/erinf,.25))===x0){ret.msg="Step size became too small";break}}else{if(ymid[i]=add(add(add(add(add(add(y0,mul(k1[i],h*bm[0])),mul(k3,h*bm[2])),mul(k4,h*bm[3])),mul(k5,h*bm[4])),mul(k6,h*bm[5])),mul(k7,h*bm[6])),xs[++i]=x0+h,ys[i]=y1,k1[i]=k7,"function"==typeof event){var yi,xi,xl=x0,xr=x0+.5*h;if(e1=event(xr,ymid[i-1]),any(ev=and(lt(e0,0),lt(0,e1)))||(xl=xr,e0=e1,e1=event(xr=x0+h,y1),ev=and(lt(e0,0),lt(0,e1))),any(ev)){for(var en,ei,side=0,sl=1,sr=1;;){if("number"==typeof e0)xi=(sr*e1*xl-sl*e0*xr)/(sr*e1-sl*e0);else for(xi=xr,j=e0.length-1;-1!==j;--j)e0[j]<0&&e1[j]>0&&(xi=min(xi,(sr*e1[j]*xl-sl*e0[j]*xr)/(sr*e1[j]-sl*e0[j])));if(xi<=xl||xi>=xr)break;ei=event(xi,yi=ret._at(xi,i-1)),any(en=and(lt(e0,0),lt(0,ei)))?(xr=xi,e1=ei,ev=en,sr=1,-1===side?sl*=.5:sl=1,side=-1):(xl=xi,e0=ei,sl=1,1===side?sr*=.5:sr=1,side=1)}return y1=ret._at(.5*(x0+xi),i-1),ret.f[i]=f(xi,yi),ret.x[i]=xi,ret.y[i]=yi,ret.ymid[i-1]=y1,ret.events=ev,ret.iterations=it,ret}}x0+=h,y0=y1,e0=e1,h=min(.8*h*pow(tol/erinf,.25),4*h)}return ret.iterations=it,ret},numeric.LU=function(A,fast){fast=fast||!1;var i,j,k,absAjk,Akk,Ak,Pk,Ai,max,abs=Math.abs,n=A.length,n1=n-1,P=new Array(n);for(fast||(A=numeric.clone(A)),k=0;k=0;--i){for(LUi=LU[i],j=i+1;ja1)&&(alpha=a1),g=add(c,mul(alpha,p)),H=dot(A1,A0),i=m-1;-1!==i;--i)H[i][i]+=1;var t0=div(z,dot(A,d=solve(H,div(g,alpha),!0))),t=1;for(i=n-1;-1!==i;--i)t0[i]<0&&(t=min(t,-.999*t0[i]));if(!all(gt(z=sub(b,dot(A,y=sub(x,mul(d,t)))),0)))return{solution:x,message:"",iterations:count};if(x=y,alpha=0);if(unbounded)return{solution:y,message:"Unbounded",iterations:count}}return{solution:x,message:"maximum iteration count exceeded",iterations:count}},numeric._solveLP=function(c,A,b,tol,maxit){var m=c.length,n=b.length,sub=(numeric.sum,numeric.log,numeric.mul,numeric.sub),dot=numeric.dot,c0=(numeric.div,numeric.add,numeric.rep([m],0).concat([1])),J=numeric.rep([n,1],-1),A0=numeric.blockMatrix([[A,J]]),b0=b,y=numeric.rep([m],0).concat(Math.max(0,numeric.sup(numeric.neg(b)))+1),x0=numeric.__solveLP(c0,A0,b0,tol,maxit,y,!1),x=numeric.clone(x0.solution);if(x.length=m,numeric.inf(sub(b,dot(A,x)))<0)return{solution:NaN,message:"Infeasible",iterations:x0.iterations};var ret=numeric.__solveLP(c,A,b,tol,maxit-x0.iterations,x,!0);return ret.iterations+=x0.iterations,ret},numeric.solveLP=function(c,A,b,Aeq,beq,tol,maxit){if(void 0===maxit&&(maxit=1e3),void 0===tol&&(tol=numeric.epsilon),void 0===Aeq)return numeric._solveLP(c,A,b,tol,maxit);var i,m=Aeq.length,n=Aeq[0].length,o=A.length,B=numeric.echelonize(Aeq),flags=numeric.rep([n],0),P=B.P,Q=[];for(i=P.length-1;-1!==i;--i)flags[P[i]]=1;for(i=n-1;-1!==i;--i)0===flags[i]&&Q.push(i);var g=numeric.getRange,I=numeric.linspace(0,m-1),J=numeric.linspace(0,o-1),Aeq2=g(Aeq,I,Q),A1=g(A,J,P),A2=g(A,J,Q),dot=numeric.dot,sub=numeric.sub,A3=dot(A1,B.I),A4=sub(A2,dot(A3,Aeq2)),b4=sub(b,dot(A3,beq)),c1=Array(P.length),c2=Array(Q.length);for(i=P.length-1;-1!==i;--i)c1[i]=c[P[i]];for(i=Q.length-1;-1!==i;--i)c2[i]=c[Q[i]];var c4=sub(c2,dot(c1,dot(B.I,Aeq2))),S=numeric._solveLP(c4,A4,b4,tol,maxit),x2=S.solution;if(x2!=x2)return S;var x1=dot(B.I,sub(beq,dot(Aeq2,x2))),x=Array(c.length);for(i=P.length-1;-1!==i;--i)x[P[i]]=x1[i];for(i=Q.length-1;-1!==i;--i)x[Q[i]]=x2[i];return{solution:x,message:S.message,iterations:S.iterations}},numeric.MPStoLP=function(MPS){MPS instanceof String&&MPS.split("\n");var i,j,z,name,state=0,states=["Initial state","NAME","ROWS","COLUMNS","RHS","BOUNDS","ENDATA"],n=MPS.length,N=0,rows={},sign=[],rl=0,vars={},nv=0,c=[],A=[],b=[];function err(e){throw new Error("MPStoLP: "+e+"\nLine "+i+": "+MPS[i]+"\nCurrent state: "+states[state]+"\n")}for(i=0;i=overflow;)n/=2,d/=2,x>>>=1;return(n+x)/d},seed},startdenom=math.pow(width,6),significance=math.pow(2,significance),overflow=2*significance,mixkey(math.random(),pool)}([],numeric.seedrandom,256,0,52),function(exports){function base0to1(A){if("object"!=typeof A)return A;var i,ret=[],n=A.length;for(i=0;imeq)work[l]=sum;else if(work[l]=-Math.abs(sum),sum>0){for(j=1;j<=n;j+=1)amat[j][i]=-amat[j][i];bvec[i]=-bvec[i]}}for(i=1;i<=nact;i+=1)work[iwsv+iact[i]]=0;for(nvl=0,temp=0,i=1;i<=q;i+=1)work[iwsv+i]=1;i-=1){for(sum=work[i],l1=(l=iwrm+i*(i+3)/2)-i,j=i+1;j<=nact;j+=1)sum-=work[l]*work[iwrv+j],l+=j;if(sum/=work[l1],work[iwrv+i]=sum,iact[i]meq)work[iwsv+nvl]=sum;else if(work[iwsv+nvl]=-Math.abs(sum),sum>0){for(j=1;j<=n;j+=1)amat[j][nvl]=-amat[j][nvl];bvec[nvl]=-bvec[nvl]}return 700}for(iact[nact+=1]=nvl,l=iwrm+(nact-1)*nact/2+1,i=1;i<=nact-1;i+=1)work[l]=work[i],l+=1;if(nact===n)work[l]=work[n];else{for(i=n;i>=nact+1&&0!==work[i]&&(gc=Math.max(Math.abs(work[i-1]),Math.abs(work[i])),gs=Math.min(Math.abs(work[i-1]),Math.abs(work[i])),temp=work[i-1]>=0?Math.abs(gc*Math.sqrt(1+gs*gs/(gc*gc))):-Math.abs(gc*Math.sqrt(1+gs*gs/(gc*gc))),gc=work[i-1]/temp,gs=work[i]/temp,1!==gc);i-=1)if(0===gc)for(work[i-1]=gs*temp,j=1;j<=n;j+=1)temp=dmat[j][i-1],dmat[j][i-1]=dmat[j][i],dmat[j][i]=temp;else for(work[i-1]=temp,nu=gs/(1+gc),j=1;j<=n;j+=1)temp=gc*dmat[j][i-1]+gs*dmat[j][i],dmat[j][i]=nu*(dmat[j][i-1]+temp)-dmat[j][i],dmat[j][i-1]=temp;work[l]=work[nact]}return 0}function fn_goto_797(){if(0===work[l1=(l=iwrm+it1*(it1+1)/2+1)+it1])return 798;if(gc=Math.max(Math.abs(work[l1-1]),Math.abs(work[l1])),gs=Math.min(Math.abs(work[l1-1]),Math.abs(work[l1])),temp=work[l1-1]>=0?Math.abs(gc*Math.sqrt(1+gs*gs/(gc*gc))):-Math.abs(gc*Math.sqrt(1+gs*gs/(gc*gc))),gc=work[l1-1]/temp,gs=work[l1]/temp,1===gc)return 798;if(0===gc){for(i=it1+1;i<=nact;i+=1)temp=work[l1-1],work[l1-1]=work[l1],work[l1]=temp,l1+=i;for(i=1;i<=n;i+=1)temp=dmat[i][it1],dmat[i][it1]=dmat[i][it1+1],dmat[i][it1+1]=temp}else{for(nu=gs/(1+gc),i=it1+1;i<=nact;i+=1)temp=gc*work[l1-1]+gs*work[l1],work[l1]=nu*(work[l1-1]+temp)-work[l1],work[l1-1]=temp,l1+=i;for(i=1;i<=n;i+=1)temp=gc*dmat[i][it1]+gs*dmat[i][it1+1],dmat[i][it1+1]=nu*(dmat[i][it1]+temp)-dmat[i][it1+1],dmat[i][it1]=temp}return 0}function fn_goto_798(){for(l1=l-it1,i=1;i<=it1;i+=1)work[l1]=work[l],l+=1,l1+=1;return work[iwuv+it1]=work[iwuv+it1+1],iact[it1]=iact[it1+1],(it1+=1)(b=Math.abs(b))?a*Math.sqrt(1+b*b/a/a):0==b?a:b*Math.sqrt(1+a*a/b/b)}var f=0,g=0,h=0,x=0,y=0,z=0,s=0;for(i=0;i=0&&(g=-g),h=f*g-s,u[i][i]=f-g,j=l;j=0&&(g=-g),h=f*g-s,u[i][i+1]=f-g,j=l;jx&&(x=y)}for(i=n-1;-1!=i;i+=-1){if(0!=g){for(h=g*u[i][i+1],j=l;j=49)throw"Error: no convergence.";for(x=q[l],g=pythag(f=(((y=q[k-1])-z)*(y+z)+((g=e[k-1])-(h=e[k]))*(g+h))/(2*h*y),1),f=f<0?((x-z)*(x+z)+h*(y/(f-g)-h))/x:((x-z)*(x+z)+h*(y/(f+g)-h))/x,c=1,s=1,i=l+1;i=0;j--)if(q[j]>2,l=0;l<_n;l++)l<(m=_bitrev[l])&&(tmp=re[l],re[l]=re[m],re[m]=tmp,tmp=im[l],im[l]=im[m],im[m]=tmp);for(var k=1;k<_n;k<<=1){h=0,d=_n/(k<<1);for(var j=0;j>1;k<=j;)j-=k,k>>=1;j+=k,_bitrev[i]=j}}(),function(){var n2=_n>>1,n4=_n>>2,n8=_n>>3,n2p4=n2+n4,t=Math.sin(Math.PI/_n),dc=2*t*t,ds=Math.sqrt(dc*(2-dc)),c=_cstb[n4]=1,s=_cstb[0]=0;t=2*dc;for(var i=1;imax&&(max=filtered[y*_w+x]*prior,maxpos=[x,y]),filtered[y*_w+x]max&&(max=filtered[y*_w+x],maxpos=[x,y]),filtered[y*_w+x]params.psrThreshold){var target=[],nux=maxpos[0],nuy=maxpos[1];for(x=0;x<_w;x++)for(y=0;y<_h;y++)target[y*_w+x]=Math.exp(-((x-nux)*(x-nux)+(y-nuy)*(y-nuy))/4);target=this.fft(target);var res_conj=complex_conj(res),fuTop=complex_mult(target,res_conj),fuBottom=complex_mult(res,res_conj),eta=params.eta;for(i=0;i<_arrlen;i++)_top[0][i]=eta*fuTop[0][i]+(1-eta)*_top[0][i],_top[1][i]=eta*fuTop[1][i]+(1-eta)*_top[1][i],_bottom[0][i]=eta*fuBottom[0][i]+(1-eta)*_bottom[0][i],_bottom[1][i]=eta*fuBottom[1][i]+(1-eta)*_bottom[1][i];_filter=complex_div(_top,_bottom)}}else console.log("The loaded filter does not support updating. Ignoring parameter 'updateFilter'.");return maxpos[0]=maxpos[0]*(width/_w),maxpos[1]=maxpos[1]*(width/_h),!(max<0)&&maxpos},this.train=function(input,left,top,width,height){if(!updateable)return console.log("The loaded filter does not support updating. Unable to do training."),!1;if("VIDEO"==input.tagName||"IMG"==input.tagName){var videoLeft=Math.round(left/input.width*input.videoWidth),videoTop=Math.round(top/input.height*input.videoHeight),videoWidth=Math.round(width/input.width*input.videoWidth),videoHeight=Math.round(height/input.height*input.videoHeight);_cc.drawImage(input,videoLeft,videoTop,videoWidth,videoHeight,0,0,_w,_h)}else"CANVAS"==input.tagName&&_cc.drawImage(input,left,top,width,height,0,0,_w,_h);for(var id=_cc.getImageData(0,0,_w,_h).data,i=0;i<_arrlen;i++)_image_array[i]=.3*id[4*i],_image_array[i]+=.59*id[4*i+1],_image_array[i]+=.11*id[4*i+2];var prepImage=preprocess(_image_array);prepImage=cosine_window(prepImage);for(var target=[],nux=_w/2,nuy=_h/2,x=0;x<_w;x++)for(var y=0;y<_h;y++)target[y*_w+x]=Math.exp(-((x-nux)*(x-nux)+(y-nuy)*(y-nuy))/4);target=this.fft(target);var res=this.fft(prepImage),res_conj=complex_conj(res),fuTop=complex_mult(target,res_conj),fuBottom=complex_mult(res,res_conj),eta=params.eta;for(i=0;i<_arrlen;i++)_top[0][i]=eta*fuTop[0][i]+(1-eta)*_top[0][i],_top[1][i]=eta*fuTop[1][i]+(1-eta)*_top[1][i],_bottom[0][i]=eta*fuBottom[0][i]+(1-eta)*_bottom[0][i],_bottom[1][i]=eta*fuBottom[1][i]+(1-eta)*_bottom[1][i];return _filter=complex_div(_top,_bottom),!0};var preprocess=function(array){for(var i=0;i<_arrlen;i++)array[i]=Math.log(array[i]+1);var mean=0;for(i=0;i<_arrlen;i++)mean+=array[i];mean/=_arrlen;for(i=0;i<_arrlen;i++)array[i]-=mean;var norm=0;for(i=0;i<_arrlen;i++)norm+=array[i]*array[i];if(0!==(norm=Math.sqrt(norm)))for(i=0;i<_arrlen;i++)array[i]/=norm;return array},cosine_window=function(array){for(var pos=0,i=0;i<_w;i++)for(var j=0;j<_h;j++){var cww=Math.sin(Math.PI*i/(_w-1)),cwh=Math.sin(Math.PI*j/(_h-1));array[pos]=Math.min(cww,cwh)*array[pos],pos++}return array},complex_mult=function(cn1,cn2){for(var nucn=[new Array(_w),new Array(_w)],r=0;r<_arrlen;r++)nucn[0][r]=cn1[0][r]*cn2[0][r]-cn1[1][r]*cn2[1][r],nucn[1][r]=cn1[0][r]*cn2[1][r]+cn1[1][r]*cn2[0][r];return nucn},complex_mult_inplace=function(cn1,cn2){for(var temp1,temp2,r=0;r<_arrlen;r++)temp1=cn1[0][r]*cn2[0][r]-cn1[1][r]*cn2[1][r],temp2=cn1[0][r]*cn2[1][r]+cn1[1][r]*cn2[0][r],cn1[0][r]=temp1,cn1[1][r]=temp2},complex_conj=function(cn){for(var nucn=[[],[]],i=0;i<_arrlen;i++)nucn[0][i]=cn[0][i],nucn[1][i]=-cn[1][i];return nucn},complex_div=function(cn1,cn2){for(var nucn=[[],[]],r=0;r<_arrlen;r++)nucn[0][r]=(cn1[0][r]*cn2[0][r]+cn1[1][r]*cn2[1][r])/(cn2[0][r]*cn2[0][r]+cn2[1][r]*cn2[1][r]),nucn[1][r]=(cn1[1][r]*cn2[0][r]-cn1[0][r]*cn2[1][r])/(cn2[0][r]*cn2[0][r]+cn2[1][r]*cn2[1][r]);return nucn}}var mosse={mosseFilter:mosseFilter,filters:{left_eye_filter:left_eye_filter,right_eye_filter:right_eye_filter,mouth_filter:mouth_filter,nose_filter:nose_filter,face_filter:face_filter}},jsfeat_1=createCommonjsModule(function(module){var global,U8_t,S32_t,F32_t,_data_type_size,get_data_type,get_channel,get_data_type_size,data_t,matrix_t,pyramid_t,keypoint_t,matmath,swap,hypot,linalg,imgproc,hessian_min_eigen_value,yape06,_group_func,haar,lib,jsfeat=jsfeat||{REVISION:"ALPHA"};global=jsfeat,U8_t=256,S32_t=512,F32_t=1024,_data_type_size=new Int32Array([-1,1,4,-1,4,-1,-1,-1,8,-1,-1,-1,-1,-1,-1,-1,8]),get_data_type=function(type){return 65280&type},get_channel=function(type){return 255&type},get_data_type_size=function(type){return _data_type_size[(65280&type)>>8]},data_t=function(){return function(size_in_bytes,buffer){this.size=-8&(size_in_bytes+7|0),void 0===buffer?this.buffer=new ArrayBuffer(this.size):(this.buffer=buffer,this.size=buffer.length),this.u8=new Uint8Array(this.buffer),this.i32=new Int32Array(this.buffer),this.f32=new Float32Array(this.buffer),this.f64=new Float64Array(this.buffer)}}(),matrix_t=function(){function matrix_t(c,r,data_type,data_buffer){this.type=0|get_data_type(data_type),this.channel=0|get_channel(data_type),this.cols=0|c,this.rows=0|r,void 0===data_buffer?this.allocate():(this.buffer=data_buffer,this.data=this.type&U8_t?this.buffer.u8:this.type&S32_t?this.buffer.i32:this.type&F32_t?this.buffer.f32:this.buffer.f64)}return matrix_t.prototype.allocate=function(){delete this.data,delete this.buffer,this.buffer=new data_t(this.cols*get_data_type_size(this.type)*this.channel*this.rows),this.data=this.type&U8_t?this.buffer.u8:this.type&S32_t?this.buffer.i32:this.type&F32_t?this.buffer.f32:this.buffer.f64},matrix_t.prototype.copy_to=function(other){for(var od=other.data,td=this.data,i=0,n=this.cols*this.rows*this.channel|0;ithis.buffer.size?(this.cols=c,this.rows=r,this.channel=ch,this.allocate()):(this.cols=c,this.rows=r,this.channel=ch)},matrix_t}(),pyramid_t=function(){function pyramid_t(levels){this.levels=0|levels,this.data=new Array(levels),this.pyrdown=jsfeat.imgproc.pyrdown}return pyramid_t.prototype.allocate=function(start_w,start_h,data_type){for(var i=this.levels;--i>=0;)this.data[i]=new matrix_t(start_w>>i,start_h>>i,data_type)},pyramid_t.prototype.build=function(input,skip_first_level){void 0===skip_first_level&&(skip_first_level=!0);var i=2,a=input,b=this.data[0];if(!skip_first_level)for(var j=input.cols*input.rows;--j>=0;)b.data[j]=input.data[j];for(b=this.data[1],this.pyrdown(a,b);inode.size&&node.resize(size_in_bytes),node},put_buffer:function(node){_pool_tail=_pool_tail.next=node}});global.cache=cache,cache.allocate(30,2560)}(jsfeat),function(global){var qsort_stack,math=(qsort_stack=new Int32Array(96),{get_gaussian_kernel:function(size,sigma,kernel,data_type){var i=0,x=0,t=0,sigma_x=0,scale_2x=0,sum=0,kern_node=jsfeat.cache.get_buffer(size<<2),_kernel=kern_node.f32;if(1==(1&size)&&size<=7&&sigma<=0)switch(size>>1){case 0:_kernel[0]=1,sum=1;break;case 1:_kernel[0]=.25,_kernel[1]=.5,_kernel[2]=.25,sum=1;break;case 2:_kernel[0]=.0625,_kernel[1]=.25,_kernel[2]=.375,_kernel[3]=.25,_kernel[4]=.0625,sum=1;break;case 3:_kernel[0]=.03125,_kernel[1]=.109375,_kernel[2]=.21875,_kernel[3]=.28125,_kernel[4]=.21875,_kernel[5]=.109375,_kernel[6]=.03125,sum=1}else for(scale_2x=-.5/((sigma_x=sigma>0?sigma:.3*(.5*(size-1)-1)+.8)*sigma_x);i=0;)for(left=stack[sp<<1],right=stack[1+(sp<<1)],sp--;;){if((n=right-left+1)<=7){for(ptr=left+1;ptr<=right;ptr++)for(ptr2=ptr;ptr2>left&&cmp(array[ptr2],array[ptr2-1]);ptr2--)t=array[ptr2],array[ptr2]=array[ptr2-1],array[ptr2-1]=t;break}for(swap_cnt=0,left0=left,right0=right,pivot=left+(n>>1),n>40&&(b=left+(d=n>>3),c=left+(d<<1),ta=array[a=left],tb=array[b],tc=array[c],left=cmp(ta,tb)?cmp(tb,tc)?b:cmp(ta,tc)?c:a:cmp(tc,tb)?b:cmp(ta,tc)?a:c,b=pivot,c=pivot+d,ta=array[a=pivot-d],tb=array[b],tc=array[c],pivot=cmp(ta,tb)?cmp(tb,tc)?b:cmp(ta,tc)?c:a:cmp(tc,tb)?b:cmp(ta,tc)?a:c,b=right-d,c=right,ta=array[a=right-(d<<1)],tb=array[b],tc=array[c],right=cmp(ta,tb)?cmp(tb,tc)?b:cmp(ta,tc)?c:a:cmp(tc,tb)?b:cmp(ta,tc)?a:c),b=pivot,c=right,ta=array[a=left],tb=array[b],tc=array[c],(pivot=cmp(ta,tb)?cmp(tb,tc)?b:cmp(ta,tc)?c:a:cmp(tc,tb)?b:cmp(ta,tc)?a:c)!=left0&&(t=array[pivot],array[pivot]=array[left0],array[left0]=t,pivot=left0),left=left1=left0+1,right=right1=right0,ta=array[pivot];;){for(;left<=right&&!cmp(ta,array[left]);)cmp(array[left],ta)||(left>left1&&(t=array[left1],array[left1]=array[left],array[left]=t),swap_cnt=1,left1++),left++;for(;left<=right&&!cmp(array[right],ta);)cmp(ta,array[right])||(rightright)break;t=array[left],array[left]=array[right],array[right]=t,swap_cnt=1,left++,right--}if(0==swap_cnt){for(right=right0,ptr=(left=left0)+1;ptr<=right;ptr++)for(ptr2=ptr;ptr2>left&&cmp(array[ptr2],array[ptr2-1]);ptr2--)t=array[ptr2],array[ptr2]=array[ptr2-1],array[ptr2-1]=t;break}for(m=left-(n=Math.min(left1-left0,left-left1))|0,i=0;i1)m>1?n>m?(stack[++sp<<1]=left0,stack[1+(sp<<1)]=left0+n-1,left=right0-m+1,right=right0):(stack[++sp<<1]=right0-m+1,stack[1+(sp<<1)]=right0,left=left0,right=left0+n-1):(left=left0,right=left0+n-1);else{if(!(m>1))break;left=right0-m+1,right=right0}}},median:function(array,low,high){for(var w,middle=0,ll=0,hh=0,median=low+high>>1;;){if(high<=low)return array[median];if(high==low+1)return array[low]>array[high]&&(w=array[low],array[low]=array[high],array[high]=w),array[median];for(array[middle=low+high>>1]>array[high]&&(w=array[middle],array[middle]=array[high],array[high]=w),array[low]>array[high]&&(w=array[low],array[low]=array[high],array[high]=w),array[middle]>array[low]&&(w=array[middle],array[middle]=array[low],array[low]=w),ll=low+1,w=array[middle],array[middle]=array[ll],array[ll]=w,hh=high;;){do{++ll}while(array[low]>array[ll]);do{--hh}while(array[hh]>array[low]);if(hh=median&&(high=hh-1)}return 0}});global.math=math}(jsfeat),matmath={identity:function(M,value){void 0===value&&(value=1);for(var src=M.data,rows=M.rows,cols=M.cols,cols_1=cols+1|0,len=rows*cols,k=len;--len>=0;)src[len]=0;for(len=k,k=0;k(b=Math.abs(b))?(b/=a,a*Math.sqrt(1+b*b)):b>0?(a/=b,b*Math.sqrt(1+a*a)):0},linalg={lu_solve:function(A,B){var t,alpha,d,s,i=0,j=0,k=0,p=1,astep=A.cols,ad=A.data,bd=B.data;for(i=0;iMath.abs(ad[k*astep+i])&&(k=j);if(Math.abs(ad[k*astep+i])=0;i--){for(s=bd[i],k=i+1;k=0;i--){for(val=bd[i],cs=(j=i+1)*size;j>16)?val0:-val0,At[i*astep+k]=val;for(iter=0;iter<2;iter++)for(j=0;j=0;)U.data[i]=a_mt.data[i];else U&&jsfeat.matmath.transpose(U,a_mt);if(V&&options&jsfeat.SVD_V_T)for(i=n*n;--i>=0;)V.data[i]=v_mt.data[i];else V&&jsfeat.matmath.transpose(V,v_mt)}else{if(U&&options&jsfeat.SVD_U_T)for(i=n*n;--i>=0;)U.data[i]=v_mt.data[i];else U&&jsfeat.matmath.transpose(U,v_mt);if(V&&options&jsfeat.SVD_V_T)for(i=m*m;--i>=0;)V.data[i]=a_mt.data[i];else V&&jsfeat.matmath.transpose(V,a_mt)}jsfeat.cache.put_buffer(a_buff),jsfeat.cache.put_buffer(w_buff),jsfeat.cache.put_buffer(v_buff)},svd_solve:function(A,X,B){var tol,i=0,j=0,k=0,pu=0,pv=0,nrows=A.rows,ncols=A.cols,sum=0,xsum=0,dt=A.type|jsfeat.C1_t,u_buff=jsfeat.cache.get_buffer(nrows*nrows<<3),w_buff=jsfeat.cache.get_buffer(ncols<<3),v_buff=jsfeat.cache.get_buffer(ncols*ncols<<3),u_mt=new jsfeat.matrix_t(nrows,nrows,dt,u_buff.data),w_mt=new jsfeat.matrix_t(1,ncols,dt,w_buff.data),v_mt=new jsfeat.matrix_t(ncols,ncols,dt,v_buff.data),bd=B.data,ud=u_mt.data,wd=w_mt.data,vd=v_mt.data;for(this.svd_decompose(A,w_mt,u_mt,v_mt,0),tol=jsfeat.EPSILON*wd[0]*ncols;itol){for(k=0,sum=0,pu=0;ktol&&(sum+=vd[pv+k]*ud[pu]/wd[k]);id[pa]=sum}jsfeat.cache.put_buffer(u_buff),jsfeat.cache.put_buffer(w_buff),jsfeat.cache.put_buffer(v_buff)},eigenVV:function(A,vects,vals){for(var n=A.cols,i=n*n,dt=A.type|jsfeat.C1_t,a_buff=jsfeat.cache.get_buffer(n*n<<3),w_buff=jsfeat.cache.get_buffer(n<<3),a_mt=new jsfeat.matrix_t(n,n,dt,a_buff.data),w_mt=new jsfeat.matrix_t(1,n,dt,w_buff.data);--i>=0;)a_mt.data[i]=A.data[i];if(function(A,astep,W,V,vstep,n){var eps=jsfeat.EPSILON,i=0,j=0,k=0,m=0,l=0,idx=0,_in=0,_in2=0,iters=0,max_iter=n*n*30,mv=0,val=0,p=0,y=0,t=0,s=0,c=0,a0=0,b0=0,indR_buff=jsfeat.cache.get_buffer(n<<2),indC_buff=jsfeat.cache.get_buffer(n<<2),indR=indR_buff.i32,indC=indC_buff.i32;if(V)for(;i0){for(m=0,mv=Math.abs(A[k]),i=1;i1)for(;iters0){for(m=0,mv=Math.abs(A[idx]),i=1;i=0;)vals.data[n]=w_mt.data[n];jsfeat.cache.put_buffer(a_buff),jsfeat.cache.put_buffer(w_buff)}},jsfeat.linalg=linalg,function(global){var sqr,T0,T1,AtA,AtB,affine2d,mLtL,Evec,get_subset,find_inliers,motion_model=(sqr=function(x){return x*x},T0=new jsfeat.matrix_t(3,3,jsfeat.F32_t|jsfeat.C1_t),T1=new jsfeat.matrix_t(3,3,jsfeat.F32_t|jsfeat.C1_t),AtA=new jsfeat.matrix_t(6,6,jsfeat.F32_t|jsfeat.C1_t),AtB=new jsfeat.matrix_t(6,1,jsfeat.F32_t|jsfeat.C1_t),affine2d=function(){function affine2d(){}return affine2d.prototype.run=function(from,to,model,count){var pt0,pt1,i=0,j=0,dt=model.type|jsfeat.C1_t,md=model.data,t0d=T0.data,t1d=T1.data,px=0,py=0;!function(from,to,T0,T1,count){for(var s0,s1,i=0,cx0=0,cy0=0,d0=0,cx1=0,cy1=0,d1=0,dx=0,dy=0;i=0;)LtL[i]=0;for(i=0;i=0||-num>=max_iters*-denom?max_iters:Math.round(num/denom))},ransac_params_t}(),motion_estimator=(get_subset=function(kernel,from,to,need_cnt,max_cnt,from_sub,to_sub){for(var indices=[],i=0,j=0,ssiter=0,idx_i=0,ok=!1;ssiter<1e3;++ssiter){for(i=0;i=0;)mask.data[count]=1;return jsfeat.cache.put_buffer(m_buff),jsfeat.cache.put_buffer(ms_buff),jsfeat.cache.put_buffer(err_buff),!0}for(;iterMath.max(inliers_max,model_points-1)&&(M.copy_to(model),inliers_max=numinliers,mask&&curr_mask.copy_to(mask),niters=params.update_iters((count-numinliers)/count,niters),result=!0)}return jsfeat.cache.put_buffer(m_buff),jsfeat.cache.put_buffer(ms_buff),jsfeat.cache.put_buffer(err_buff),result},lmeds:function(params,kernel,from,to,count,model,mask,max_iters){if(void 0===max_iters&&(max_iters=1e3),count=0;)mask.data[count]=1;return jsfeat.cache.put_buffer(m_buff),jsfeat.cache.put_buffer(ms_buff),jsfeat.cache.put_buffer(err_buff),!0}for(;iter=model_points),jsfeat.cache.put_buffer(m_buff),jsfeat.cache.put_buffer(ms_buff),jsfeat.cache.put_buffer(err_buff),result}});global.ransac_params_t=ransac_params_t,global.motion_model=motion_model,global.motion_estimator=motion_estimator}(jsfeat),imgproc={grayscale:function(src,w,h,dst,code){void 0===code&&(code=jsfeat.COLOR_RGBA2GRAY);var x=0,y=0,i=0,j=0,ir=0,jr=0,coeff_r=4899,coeff_b=1868,cn=4;code!=jsfeat.COLOR_BGRA2GRAY&&code!=jsfeat.COLOR_BGR2GRAY||(coeff_r=1868,coeff_b=4899),code!=jsfeat.COLOR_RGB2GRAY&&code!=jsfeat.COLOR_BGR2GRAY||(cn=3);var cn2=cn<<1,cn3=3*cn|0;dst.resize(w,h,1);var dst_u8=dst.data;for(y=0;y>14,dst_u8[jr+1]=src[ir+cn]*coeff_r+9617*src[ir+cn+1]+src[ir+cn+2]*coeff_b+8192>>14,dst_u8[jr+2]=src[ir+cn2]*coeff_r+9617*src[ir+cn2+1]+src[ir+cn2+2]*coeff_b+8192>>14,dst_u8[jr+3]=src[ir+cn3]*coeff_r+9617*src[ir+cn3+1]+src[ir+cn3+2]*coeff_b+8192>>14;for(;x>14}},resample:function(src,dst,nw,nh){var h=src.rows,w=src.cols;h>nh&&w>nw&&(dst.resize(nw,nh,src.channel),src.type&jsfeat.U8_t&&dst.type&jsfeat.U8_t&&h*w/(nh*nw)<256?function(src,dst,nw,nh){for(var xofs_count=0,ch=src.channel,w=src.cols,h=src.rows,src_d=src.data,dst_d=dst.data,scale_x=w/nw,scale_y=h/nh,inv_scale_256=scale_x*scale_y*65536|0,dx=0,dy=0,sx=0,sy=0,sx1=0,sx2=0,i=0,k=0,fsx1=0,fsx2=0,a=0,b=0,dxn=0,alpha=0,beta=0,beta1=0,buf_node=jsfeat.cache.get_buffer(nw*ch<<2),sum_node=jsfeat.cache.get_buffer(nw*ch<<2),xofs_node=jsfeat.cache.get_buffer(2*w*3<<2),buf=buf_node.i32,sum=sum_node.i32,xofs=xofs_node.i32;dxfsx1&&(xofs[k++]=dx*ch|0,xofs[k++]=(sx1-1)*ch|0,xofs[k++]=256*(sx1-fsx1)|0,xofs_count++),sx=sx1;sx.001&&(xofs_count++,xofs[k++]=dx*ch|0,xofs[k++]=sx2*ch|0,xofs[k++]=256*(fsx2-sx2)|0)}for(dx=0;dxfsx1&&(xofs_count++,xofs[k++]=(sx1-1)*ch|0,xofs[k++]=dx*ch|0,xofs[k++]=(sx1-fsx1)*scale),sx=sx1;sx.001&&(xofs_count++,xofs[k++]=sx2*ch|0,xofs[k++]=dx*ch|0,xofs[k++]=(fsx2-sx2)*scale)}for(dx=0;dx>1,w=src.cols,h=src.rows,data_type=src.type,is_u8=data_type&jsfeat.U8_t;dst.resize(w,h,src.channel);var buf,filter,src_d=src.data,dst_d=dst.data,buf_sz=kernel_size+Math.max(h,w)|0,buf_node=jsfeat.cache.get_buffer(buf_sz<<2),filt_node=jsfeat.cache.get_buffer(kernel_size<<2);is_u8?(buf=buf_node.i32,filter=filt_node.i32):data_type&jsfeat.S32_t?(buf=buf_node.i32,filter=filt_node.f32):(buf=buf_node.f32,filter=filt_node.f32),jsfeat.math.get_gaussian_kernel(kernel_size,sigma,filter,data_type),is_u8?function(buf,src_d,dst_d,w,h,filter,kernel_size,half_kernel){for(var i=0,j=0,k=0,sp=0,dp=0,sum=0,sum1=0,sum2=0,sum3=0,f0=filter[0],fk=0,w2=w<<1,w3=3*w,w4=w<<2;i>8,255),dst_d[dp+j+1]=Math.min(sum1>>8,255),dst_d[dp+j+2]=Math.min(sum2>>8,255),dst_d[dp+j+3]=Math.min(sum3>>8,255)}for(;j>8,255)}sp+=w,dp+=w}for(i=0;i>8,255),dst_d[dp+w]=Math.min(sum1>>8,255),dst_d[dp+w2]=Math.min(sum2>>8,255),dst_d[dp+w3]=Math.min(sum3>>8,255)}for(;j>8,255)}}}(buf,src_d,dst_d,w,h,filter,kernel_size,half_kernel):function(buf,src_d,dst_d,w,h,filter,kernel_size,half_kernel){for(var i=0,j=0,k=0,sp=0,dp=0,sum=0,sum1=0,sum2=0,sum3=0,f0=filter[0],fk=0,w2=w<<1,w3=3*w,w4=w<<2;ithreshold&&accum[base]>accum[base-1]&&accum[base]>=accum[base+1]&&accum[base]>accum[base-numrho-2]&&accum[base]>=accum[base+numrho+2]&&_sort_buf.push(base)}for(_sort_buf.sort(function(l1,l2){return accum[l1]>accum[l2]||accum[l1]==accum[l2]&&l1>1,h2=src.rows>>1,_w2=w2-(sx<<1),_h2=h2-(sy<<1),x=0,y=0,sptr=sx+sy*w,sline=0,dptr=0,dline=0;dst.resize(w2,h2,src.channel);var src_d=src.data,dst_d=dst.data;for(y=0;y<_h2;++y){for(sline=sptr,dline=dptr,x=0;x<=_w2-2;x+=2,dline+=2,sline+=4)dst_d[dline]=src_d[sline]+src_d[sline+1]+src_d[sline+w]+src_d[sline+w+1]+2>>2,dst_d[dline+1]=src_d[sline+2]+src_d[sline+3]+src_d[sline+w+2]+src_d[sline+w+3]+2>>2;for(;x<_w2;++x,++dline,sline+=2)dst_d[dline]=src_d[sline]+src_d[sline+1]+src_d[sline+w]+src_d[sline+w+1]+2>>2;sptr+=w<<1,dptr+=w2}},scharr_derivatives:function(src,dst){var a,b,c,d,e,f,trow0,trow1,w=src.cols,h=src.rows,dstep=w<<1,x=0,y=0,x1=0,srow0=0,srow1=0,srow2=0,drow=0;dst.resize(w,h,2);var img=src.data,gxgy=dst.data,buf0_node=jsfeat.cache.get_buffer(w+2<<2),buf1_node=jsfeat.cache.get_buffer(w+2<<2);for(src.type&jsfeat.U8_t||src.type&jsfeat.S32_t?(trow0=buf0_node.i32,trow1=buf1_node.i32):(trow0=buf0_node.f32,trow1=buf1_node.f32);y0?y-1:1)*w|0,srow2=(y0?y-1:1)*w|0,srow2=(y0;--j)for(pup=(p=j+h0*w1)-w1,i=h0;i>0;--i,p-=w1,pup-=w1)dst_tilted[p]+=dst_tilted[pup]+dst_tilted[pup+1]}},equalize_histogram:function(src,dst){var w=src.cols,h=src.rows,src_d=src.data;dst.resize(w,h,src.channel);var hist0,norm,dst_d=dst.data,size=w*h,i=0,prev=0,hist0_node=jsfeat.cache.get_buffer(1024);for(hist0=hist0_node.i32;i<256;++i)hist0[i]=0;for(i=0;ihigh_thresh&&(i=low_thresh,low_thresh=high_thresh,high_thresh=i),i=3*(w+2)|0;--i>=0;)buf[i]=0;for(i=(h+2)*(w+2)|0;--i>=0;)map[i]=0;for(;j>31)-(x>>31)+((y^y>>31)-(y>>31));for(i=1;i<=h;++i,grad+=w2){if(i==h)for(j=row2+w;--j>=row2;)buf[j]=0;else for(j=0;j>31)-(x>>31)+((y^y>>31)-(y>>31));for(_grad=grad-w2|0,map[map_i-1]=0,suppress=0,j=0;jlow_thresh)if(s=(x=dxdy[_grad])^(y=dxdy[_grad+1]),y=(y^y>>31)-(y>>31)|0,tg67x=(tg22x=13573*(x=(x^x>>31)-(x>>31)|0))+(x+x<<15),(y<<=15)buf[row1+j-1]&&f>=buf[row1+j+1]){f>high_thresh&&!suppress&&2!=map[map_i+j-map_w]?(map[map_i+j]=2,suppress=1,stack[stack_i++]=map_i+j):map[map_i+j]=1;continue}}else if(y>tg67x){if(f>buf[row0+j]&&f>=buf[row2+j]){f>high_thresh&&!suppress&&2!=map[map_i+j-map_w]?(map[map_i+j]=2,suppress=1,stack[stack_i++]=map_i+j):map[map_i+j]=1;continue}}else if(f>buf[row0+j-(s=s<0?-1:1)]&&f>buf[row2+j+s]){f>high_thresh&&!suppress&&2!=map[map_i+j-map_w]?(map[map_i+j]=2,suppress=1,stack[stack_i++]=map_i+j):map[map_i+j]=1;continue}map[map_i+j]=0,suppress=0}map[map_i+w]=0,map_i+=map_w,j=row0,row0=row1,row1=row2,row2=j}for(j=map_i-map_w-1,i=0;i0;)map_i=stack[--stack_i],1==map[map_i-=map_w+1]&&(map[map_i]=2,stack[stack_i++]=map_i),1==map[map_i+=1]&&(map[map_i]=2,stack[stack_i++]=map_i),1==map[map_i+=1]&&(map[map_i]=2,stack[stack_i++]=map_i),1==map[map_i+=map_w]&&(map[map_i]=2,stack[stack_i++]=map_i),1==map[map_i-=2]&&(map[map_i]=2,stack[stack_i++]=map_i),1==map[map_i+=map_w]&&(map[map_i]=2,stack[stack_i++]=map_i),1==map[map_i+=1]&&(map[map_i]=2,stack[stack_i++]=map_i),1==map[map_i+=1]&&(map[map_i]=2,stack[stack_i++]=map_i);for(map_i=map_w+1,row0=0,i=0;i0&&ys>0&&ixs=0&&iys>=0&&ixs95&&g>40&&b>20&&r>g&&r>b&&r-Math.min(g,b)>15&&Math.abs(r-g)>15?dst[i]=255:dst[i]=0}},jsfeat.imgproc=imgproc,function(global){var offsets16,threshold_tab,pixel_off,score_diff,_cmp_score_16,_threshold,fast_corners=(offsets16=new Int32Array([0,3,1,3,2,2,3,1,3,0,3,-1,2,-2,1,-3,0,-3,-1,-3,-2,-2,-3,-1,-3,0,-3,1,-2,2,-1,3]),threshold_tab=new Uint8Array(512),pixel_off=new Int32Array(25),score_diff=new Int32Array(25),_cmp_score_16=function(src,off,pixel,d,threshold){for(var k=0,v=src[off],a0=threshold,a=0,b0=0,b=0;k<25;++k)d[k]=v-src[off+pixel[k]];for(k=0;k<16;k+=2)a=Math.min(d[k+1],d[k+2]),(a=Math.min(a,d[k+3]))<=a0||(a=Math.min(a,d[k+4]),a=Math.min(a,d[k+5]),a=Math.min(a,d[k+6]),a=Math.min(a,d[k+7]),a=Math.min(a,d[k+8]),a0=Math.max(a0,Math.min(a,d[k])),a0=Math.max(a0,Math.min(a,d[k+9])));for(b0=-a0,k=0;k<16;k+=2)b=Math.max(d[k+1],d[k+2]),b=Math.max(b,d[k+3]),b=Math.max(b,d[k+4]),(b=Math.max(b,d[k+5]))>=b0||(b=Math.max(b,d[k+6]),b=Math.max(b,d[k+7]),b=Math.max(b,d[k+8]),b0=Math.min(b0,Math.max(b,d[k])),b0=Math.min(b0,Math.max(b,d[k+9])));return-b0-1},_threshold=20,{set_threshold:function(threshold){_threshold=Math.min(Math.max(threshold,0),255);for(var i=-255;i<=255;++i)threshold_tab[i+255]=i<-_threshold?1:i>_threshold?2:0;return _threshold},detect:function(src,corners,border){void 0===border&&(border=3);var pt,img=src.data,w=src.cols,h=src.rows,i=0,j=0,k=0,vt=0,m3=0,buf_node=jsfeat.cache.get_buffer(3*w),cpbuf_node=jsfeat.cache.get_buffer(3*(w+1)<<2),buf=buf_node.u8,cpbuf=cpbuf_node.i32,pixel=pixel_off,sd=score_diff,sy=Math.max(3,border),ey=Math.min(h-2,h-border),sx=Math.max(3,border),ex=Math.min(w-3,w-border),_count=0,corners_cnt=0,score_func=_cmp_score_16,thresh_tab=threshold_tab,threshold=_threshold,v=0,tab=0,d=0,ncorners=0,cornerpos=0,curr=0,ptr=0,prev=0,pprev=0,jp1=0,jm1=0,score=0;!function(pixel,step,pattern_size){for(var k=0,offsets=offsets16;k8){cpbuf[cornerpos+ ++ncorners]=j,buf[curr+j]=score_func(img,ptr,pixel,sd,threshold);break}}else _count=0;if(2&d)for(vt=v+threshold,_count=0,k=0;k<25;++k)if(img[ptr+pixel[k]]>vt){if(++_count>8){cpbuf[cornerpos+ ++ncorners]=j,buf[curr+j]=score_func(img,ptr,pixel,sd,threshold);break}}else _count=0}if(cpbuf[cornerpos+w]=ncorners,i!=sy)for(prev=(m3=(i-4+3)%3)*w|0,cornerpos=m3*(w+1)|0,pprev=(m3=(i-5+3)%3)*w|0,ncorners=cpbuf[cornerpos+w],k=0;kbuf[prev+jp1]&&score>buf[prev+jm1]&&score>buf[pprev+jm1]&&score>buf[pprev+j]&&score>buf[pprev+jp1]&&score>buf[curr+jm1]&&score>buf[curr+j]&&score>buf[curr+jp1]&&((pt=corners[corners_cnt]).x=j,pt.y=i-1,pt.score=score,corners_cnt++)}return jsfeat.cache.put_buffer(buf_node),jsfeat.cache.put_buffer(cpbuf_node),corners_cnt}});global.fast_corners=fast_corners,fast_corners.set_threshold(20)}(jsfeat),hessian_min_eigen_value=function(src,off,tr,Dxx,Dyy,Dxy,Dyx){var Ixx=-2*src[off]+src[off+Dxx]+src[off-Dxx],Iyy=-2*src[off]+src[off+Dyy]+src[off-Dyy],Ixy=src[off+Dxy]+src[off-Dxy]-src[off+Dyx]-src[off-Dyx],sqrt_delta=0|Math.sqrt((Ixx-Iyy)*(Ixx-Iyy)+4*Ixy*Ixy);return Math.min(Math.abs(tr-sqrt_delta),Math.abs(-(tr+sqrt_delta)))},yape06={laplacian_threshold:30,min_eigen_value_threshold:25,detect:function(src,points,border){void 0===border&&(border=5);var pt,x=0,y=0,w=src.cols,h=src.rows,srd_d=src.data,Dyy=5*w|0,Dxy=3+3*w|0,Dyx=3-3*w|0,lap_buf=jsfeat.cache.get_buffer(w*h<<2),laplacian=lap_buf.i32,lv=0,row=0,rowx=0,min_eigen_value=0,number_of_points=0,lap_thresh=this.laplacian_threshold,eigen_thresh=this.min_eigen_value_threshold,sx=0|Math.max(5,border),sy=0|Math.max(3,border),ex=0|Math.min(w-5,w-border),ey=0|Math.min(h-3,h-border);for(x=w*h;--x>=0;)laplacian[x]=0;for(function(src,dst,w,h,Dxx,Dyy,sx,sy,ex,ey){var y=0,x=0,yrow=sy*w+sx|0,row=yrow;for(y=sy;ylap_thresh&&lv>laplacian[rowx-1]&&lv>laplacian[rowx+1]&&lv>laplacian[rowx-w]&&lv>laplacian[rowx+w]&&lv>laplacian[rowx-w-1]&&lv>laplacian[rowx+w-1]&&lv>laplacian[rowx-w+1]&&lv>laplacian[rowx+w+1])&&(min_eigen_value=hessian_min_eigen_value(srd_d,rowx,lv,5,Dyy,Dxy,Dyx))>eigen_thresh&&((pt=points[number_of_points]).x=x,pt.y=y,pt.score=min_eigen_value,++number_of_points,++x,++rowx);return jsfeat.cache.put_buffer(lap_buf),number_of_points}},jsfeat.yape06=yape06,function(global){var precompute_directions,is_local_maxima,perform_one_point,lev_table_t,yape=(precompute_directions=function(step,dirs,R){var x,y,i=0;for(x=R,y=0;y=0;x--,i++)y=Math.sqrt(R*R-x*x)+.5|0,dirs[i]=x+step*y;for(;-x=0;y--,i++)x=-Math.sqrt(R*R-y*y)-.5|0,dirs[i]=x+step*y;for(;y>x;y--,i++)x=-Math.sqrt(R*R-y*y)-.5|0,dirs[i]=x+step*y;for(x++;x<=0;x++,i++)y=-Math.sqrt(R*R-x*x)-.5|0,dirs[i]=x+step*y;for(;x<-y;x++,i++)y=-Math.sqrt(R*R-x*x)-.5|0,dirs[i]=x+step*y;for(y++;y<0;y++,i++)x=Math.sqrt(R*R-y*y)+.5|0,dirs[i]=x+step*y;return dirs[i]=dirs[0],dirs[i+1]=dirs[1],i},is_local_maxima=function(p,off,v,step,neighborhood){var x,y;if(v>0)for(off-=step*neighborhood,y=-neighborhood;y<=neighborhood;++y){for(x=-neighborhood;x<=neighborhood;++x)if(p[off+x]>v)return!1;off+=step}else for(off-=step*neighborhood,y=-neighborhood;y<=neighborhood;++y){for(x=-neighborhood;x<=neighborhood;++x)if(p[off+x]=Im)if((B0=I[x+dirs[b]])<=Ip){if(B0>=Im)return void(Scores[x]=0);if((B1=I[x+dirs[++b]])>Ip)if((B2=I[x+dirs[++b]])>Ip)state=3;else{if(!(B2Ip)state=7;else{if(!(B2Ip)if((B2=I[x+dirs[++b]])>Ip)state=3;else{if(!(B2Ip)state=7;else{if(!(B2Ip)return void(Scores[x]=0);if((B1=I[x+dirs[++b]])>Ip)return void(Scores[x]=0);if((B2=I[x+dirs[++b]])>Ip)return void(Scores[x]=0);state=1}else{if((B0=I[x+dirs[b]])Ip){if(B1=B2,(B2=I[x+dirs[++b]])Ip)return void(Scores[x]=0);if(B2>Ip)return void(Scores[x]=0);if(B1=B2,(B2=I[x+dirs[++b]])>Ip)return void(Scores[x]=0);score-=A+B1,state=8;break}if(B1<=Ip)return void(Scores[x]=0);if(B2<=Ip)return void(Scores[x]=0);if(B1=B2,(B2=I[x+dirs[++b]])>Ip){score-=A+B1,state=3;break}if(B2Ip)return void(Scores[x]=0);score-=A+B1,state=1;break}if(A>Ip){if(B1=Im)return void(Scores[x]=0);if(B2>=Im)return void(Scores[x]=0);if(B1=B2,(B2=I[x+dirs[++b]])Ip){score-=A+B1,state=7;break}return void(Scores[x]=0);case 2:if(A>Ip)return void(Scores[x]=0);if(B1=B2,B2=I[x+dirs[++b]],AIp)return void(Scores[x]=0);score-=A+B1,state=4;break}if(B2>Ip){score-=A+B1,state=7;break}if(B2Ip){if(B2Ip){score-=A+B1,state=3;break}if(B2Ip)return void(Scores[x]=0);if(AIp)return void(Scores[x]=0);score-=A+B1,state=1;break}if(B2>=Im)return void(Scores[x]=0);if(B1=B2,(B2=I[x+dirs[++b]])Ip){score-=A+B1,state=7;break}return void(Scores[x]=0);case 5:if(AIp){if(B1=B2,(B2=I[x+dirs[++b]])Ip){score-=A+B1,state=3;break}if(B2Ip)return void(Scores[x]=0);if(AIp){score-=A+B1,state=3;break}if(B2Ip)return void(Scores[x]=0);if(AIp){score-=A+B1,state=7;break}return void(Scores[x]=0);case 8:if(A>Ip){if(B2Ip)return void(Scores[x]=0);score-=A+B1,state=1;break}return void(Scores[x]=0);case 9:if(AIp)return void(Scores[x]=0);if(B1=B2,(B2=I[x+dirs[++b]])>Ip)return void(Scores[x]=0);score-=A+B1,state=8;break}if(A>Ip){if(B1=B2,(B2=I[x+dirs[++b]])>i,height>>i,radius)},detect:function(src,points,border){void 0===border&&(border=4);var pt,Sb,off,step,n,t=this.level_tables[0],R=0|t.radius,Rm1=R-1|0,dirs=t.dirs,dirs_count=0|t.dirs_count,opposite=dirs_count>>1,img=src.data,w=0|src.cols,h=0|src.rows,hw=w>>1,scores=t.scores,x=0,y=0,row=0,rowx=0,ip=0,im=0,abs_score=0,score=0,tau=0|this.tau,number_of_points=0,sx=0|Math.max(R+1,border),sy=0|Math.max(R+1,border),ex=0|Math.min(w-R-2,w-border),ey=0|Math.min(h-R-2,h-border);for(row=sy*w+sx|0,y=sy;y=3&&is_local_maxima(scores,rowx,score,hw,R)&&((pt=points[number_of_points]).x=x,pt.y=y,pt.score=abs_score,++number_of_points,x+=Rm1,rowx+=Rm1));return number_of_points}});global.yape=yape}(jsfeat),function(global){var bit_pattern_31_,H,patch_img,rectify_patch,orb=(bit_pattern_31_=new 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jsfeat.matrix_t(3,3,jsfeat.F32_t|jsfeat.C1_t),patch_img=new jsfeat.matrix_t(32,32,jsfeat.U8_t|jsfeat.C1_t),rectify_patch=function(src,dst,angle,px,py,psize){var cosine=Math.cos(angle),sine=Math.sin(angle);H.data[0]=cosine,H.data[1]=-sine,H.data[2]=(-cosine+sine)*psize*.5+px,H.data[3]=sine,H.data[4]=cosine,H.data[5]=(-sine-cosine)*psize*.5+py,jsfeat.imgproc.warp_affine(src,dst,H,128)},{describe:function(src,corners,count,descriptors){var i=0,b=0,px=0,py=0,angle=0,t0=0,t1=0,val=0,patch_d=(src.data,src.cols,src.rows,patch_img.data),patt=0;descriptors.type&jsfeat.U8_t?descriptors.resize(32,count,1):(descriptors.type=jsfeat.U8_t,descriptors.cols=32,descriptors.rows=count,descriptors.channel=1,descriptors.allocate());var descr_d=descriptors.data,descr_off=0;for(i=0;i=0;--level)for(lev_sc=1/(1<>level,dstep=(lw=w0>>level)<<1,img_prev=prev_imgs[level].data,img_next=next_imgs[level].data,brd_r=lw-win_size|0,brd_b=lh-win_size|0,scharr_deriv(prev_imgs[level],deriv_m),ptid=0;ptid=brd_r|(iprev_y=0|(prev_y-=half_win))<=0|iprev_y>=brd_b)){for(iw11=16384-(iw00=(1-(a=prev_x-iprev_x))*(1-(b=prev_y-iprev_y))*16384+.5|0)-(iw01=a*(1-b)*16384+.5|0)-(iw10=(1-a)*b*16384+.5|0),A11=0,A12=0,A22=0,y=0;y>9,ixval=8192+(ixval=deriv_lev[dsrc]*iw00+deriv_lev[dsrc+2]*iw01+deriv_lev[dsrc+dstep]*iw10+deriv_lev[dsrc+dstep+2]*iw11)>>14,iyval=8192+(iyval=deriv_lev[dsrc+1]*iw00+deriv_lev[dsrc+3]*iw01+deriv_lev[dsrc+dstep+1]*iw10+deriv_lev[dsrc+dstep+3]*iw11)>>14,iwin_buf[iptr]=ival,deriv_iwin[diptr++]=ixval,deriv_iwin[diptr++]=iyval,A11+=ixval*ixval,A12+=ixval*iyval,A22+=iyval*iyval;if(D=(A11*=1/(1<<20))*(A22*=1/(1<<20))-(A12*=1/(1<<20))*A12,(A22+A11-Math.sqrt((A11-A22)*(A11-A22)+4*A12*A12))/win_area2=brd_r|(inext_y=0|next_y)<=0|inext_y>=brd_b)){0==level&&(status[ptid]=0);break}for(iw11=16384-(iw00=(1-(a=next_x-inext_x))*(1-(b=next_y-inext_y))*16384+.5|0)-(iw01=a*(1-b)*16384+.5|0)-(iw10=(1-a)*b*16384+.5|0),b1=0,b2=0,y=0;y>9,b1+=(ival-=iwin_buf[iptr])*deriv_iwin[diptr++],b2+=ival*deriv_iwin[diptr++];if(next_x+=delta_x=(A12*(b2*=1/(1<<20))-A22*(b1*=1/(1<<20)))*D,next_y+=delta_y=(A12*b1-A11*b2)*D,curr_xy[i]=next_x+half_win,curr_xy[j]=next_y+half_win,delta_x*delta_x+delta_y*delta_y<=eps)break;if(iter>0&&Math.abs(delta_x+prev_delta_x)<.01&&Math.abs(delta_y+prev_delta_y)<.01){curr_xy[i]-=.5*delta_x,curr_xy[j]-=.5*delta_y;break}prev_delta_x=delta_x,prev_delta_y=delta_y}}else 0==level&&(status[ptid]=0);jsfeat.cache.put_buffer(iwin_node),jsfeat.cache.put_buffer(deriv_iwin_node),jsfeat.cache.put_buffer(deriv_lev_node)}});global.optical_flow_lk=optical_flow_lk}(jsfeat),_group_func=function(r1,r2){var distance=.25*r1.width+.5|0;return r2.x<=r1.x+distance&&r2.x>=r1.x-distance&&r2.y<=r1.y+distance&&r2.y>=r1.y-distance&&r2.width<=1.5*r1.width+.5|0&&1.5*r2.width+.5|0>=r1.width},haar={edges_density:.07,detect_single_scale:function(int_sum,int_sqsum,int_tilted,int_canny_sum,width,height,scale,classifier){var i,j,k,x,y,mean,variance,std,stages,stage,trees,tree,sn,tn,fn,stage_thresh,stage_sum,tree_sum,feature,features,fi_a,fi_b,fi_c,fw,fh,win_w=classifier.size[0]*scale|0,win_h=classifier.size[1]*scale|0,step_x=.5*scale+1.5|0,step_y=step_x,ex=width-win_w|0,ey=height-win_h|0,w1=width+1|0,inv_area=1/(win_w*win_h),found=!0,ii_a=0,ii_b=win_w,ii_c=win_h*w1,ii_d=ii_c+win_w,edges_thresh=win_w*win_h*255*this.edges_density|0,rects=[];for(y=0;y0?Math.sqrt(variance):1,sn=(stages=classifier.complexClassifiers).length,found=!0,i=0;inode[root2].rank?node[root2].parent=root:(node[root].parent=root2,node[root].rank==node[root2].rank&&node[root2].rank++,root=root2);for(var temp,node2=j;-1!=node[node2].parent;)temp=node2,node2=node[node2].parent,node[temp].parent=root;for(node2=i;-1!=node[node2].parent;)temp=node2,node2=node[node2].parent,node[temp].parent=root}}}var idx_seq=[],class_idx=0;for(i=0;i=0&&(node[node1].rank=~class_idx++),j=~node[node1].rank}idx_seq[i]=j}var comps=[];for(i=0;i=min_neighbors&&seq2.push({x:(2*comps[i].x+n)/(2*n),y:(2*comps[i].y+n)/(2*n),width:(2*comps[i].width+n)/(2*n),height:(2*comps[i].height+n)/(2*n),neighbors:comps[i].neighbors,confidence:comps[i].confidence});var result_seq=[];for(n=seq2.length,i=0;i=r2.x-distance&&r1.y>=r2.y-distance&&r1.x+r1.width<=r2.x+r2.width+distance&&r1.y+r1.height<=r2.y+r2.height+distance&&(r2.neighbors>Math.max(3,r1.neighbors)||r1.neighbors<3)){flag=!1;break}}flag&&result_seq.push(r1)}return result_seq}},jsfeat.haar=haar,function(global){var _group_func,img_pyr,bbf=(_group_func=function(r1,r2){var distance=.25*r1.width+.5|0;return r2.x<=r1.x+distance&&r2.x>=r1.x-distance&&r2.y<=r1.y+distance&&r2.y>=r1.y-distance&&r2.width<=1.5*r1.width+.5|0&&1.5*r2.width+.5|0>=r1.width},img_pyr=new jsfeat.pyramid_t(1),{interval:4,scale:1.1486,next:5,scale_to:1,prepare_cascade:function(cascade){for(var sn=cascade.stage_classifier.length,j=0;j>1,nh=src1.rows>>1,(new_pyr||nw!=src0.cols||nh!=src0.rows)&&(img_pyr.data[i<<2]=new jsfeat.matrix_t(nw,nh,data_type),src0=img_pyr.data[i<<2]),jsfeat.imgproc.pyrdown(src1,src0);for(i=2*this.next;i>1,nh=src1.rows>>1,src0=img_pyr.data[1+(i<<2)],(new_pyr||nw!=src0.cols||nh!=src0.rows)&&(img_pyr.data[1+(i<<2)]=new jsfeat.matrix_t(nw,nh,data_type),src0=img_pyr.data[1+(i<<2)]),jsfeat.imgproc.pyrdown(src1,src0,1,0),src0=img_pyr.data[2+(i<<2)],(new_pyr||nw!=src0.cols||nh!=src0.rows)&&(img_pyr.data[2+(i<<2)]=new jsfeat.matrix_t(nw,nh,data_type),src0=img_pyr.data[2+(i<<2)]),jsfeat.imgproc.pyrdown(src1,src0,0,1),src0=img_pyr.data[3+(i<<2)],(new_pyr||nw!=src0.cols||nh!=src0.rows)&&(img_pyr.data[3+(i<<2)]=new jsfeat.matrix_t(nw,nh,data_type),src0=img_pyr.data[3+(i<<2)]),jsfeat.imgproc.pyrdown(src1,src0,1,1);return img_pyr},detect:function(pyramid,cascade){this.interval;var alpha,feature,orig_feature,feature_k,feature_o,scale=this.scale,next=this.next,scale_upto=this.scale_to,i=0,j=0,k=0,n=0,x=0,y=0,q=0,sn=0,f_cnt=0,q_cnt=0,p=0,pmin=0,nmax=0,f=0,i4=0,qw=0,qh=0,sum=0,flag=!0,shortcut=!0,scale_x=1,scale_y=1,dx=[0,1,0,1],dy=[0,0,1,1],seq=[],pyr=pyramid.data,u8=[],u8o=[0,0,0],step=[0,0,0],paddings=[0,0,0];for(i=0;i>2),qh=pyr[i4+(next<<3)].rows-(cascade.height>>2),step[0]=1*pyr[i4].cols,step[1]=1*pyr[i4+(next<<2)].cols,step[2]=1*pyr[i4+(next<<3)].cols,paddings[0]=4*pyr[i4].cols-4*qw,paddings[1]=2*pyr[i4+(next<<2)].cols-2*qw,paddings[2]=1*pyr[i4+(next<<3)].cols-1*qw,sn=cascade.stage_classifier.length,j=0;j=0&&(p=u8[feature_k.pz[f]][u8o[feature_k.pz[f]]+feature_k.px[f]])=0&&(n=u8[feature_k.nz[f]][u8o[feature_k.nz[f]]+feature_k.nx[f]])>nmax){if(pmin<=n){shortcut=!1;break}nmax=n}}sum+=shortcut?alpha[1+(k<<1)]:alpha[k<<1]}if(sumnode[root2].rank?node[root2].parent=root:(node[root].parent=root2,node[root].rank==node[root2].rank&&node[root2].rank++,root=root2);for(var temp,node2=j;-1!=node[node2].parent;)temp=node2,node2=node[node2].parent,node[temp].parent=root;for(node2=i;-1!=node[node2].parent;)temp=node2,node2=node[node2].parent,node[temp].parent=root}}}var idx_seq=[],class_idx=0;for(i=0;i=0&&(node[node1].rank=~class_idx++),j=~node[node1].rank}idx_seq[i]=j}var comps=[];for(i=0;i=min_neighbors&&seq2.push({x:(2*comps[i].x+n)/(2*n),y:(2*comps[i].y+n)/(2*n),width:(2*comps[i].width+n)/(2*n),height:(2*comps[i].height+n)/(2*n),neighbors:comps[i].neighbors,confidence:comps[i].confidence});var result_seq=[];for(n=seq2.length,i=0;i=r2.x-distance&&r1.y>=r2.y-distance&&r1.x+r1.width<=r2.x+r2.width+distance&&r1.y+r1.height<=r2.y+r2.height+distance&&(r2.neighbors>Math.max(3,r1.neighbors)||r1.neighbors<3)){flag=!1;break}}flag&&result_seq.push(r1)}return result_seq}});global.bbf=bbf}(jsfeat),lib=jsfeat,module.exports=lib}),findFaceWorker=function(e){var b,c,a,window=self,jsfeat=jsfeat||{REVISION:"ALPHA"};!function(r){var m=256,i=512,h=1024,z=new Int32Array([-1,1,4,-1,4,-1,-1,-1,8,-1,-1,-1,-1,-1,-1,-1,8]),y=function(B){return 65280&B},k=function(B){return 255&B},c=function(B){return z[(65280&B)>>8]},v=function(){return function(D,C){this.size=-8&(D+7|0),void 0===C?this.buffer=new ArrayBuffer(this.size):(this.buffer=C,this.size=C.length),this.u8=new Uint8Array(this.buffer),this.i32=new Int32Array(this.buffer),this.f32=new Float32Array(this.buffer),this.f64=new Float64Array(this.buffer)}}(),q=function(){function B(F,D,E,C){this.type=0|y(E),this.channel=0|k(E),this.cols=0|F,this.rows=0|D,void 0===C?this.allocate():(this.buffer=C,this.data=this.type&m?this.buffer.u8:this.type&i?this.buffer.i32:this.type&h?this.buffer.f32:this.buffer.f64)}return B.prototype.allocate=function(){delete this.data,delete this.buffer,this.buffer=new v(this.cols*c(this.type)*this.channel*this.rows),this.data=this.type&m?this.buffer.u8:this.type&i?this.buffer.i32:this.type&h?this.buffer.f32:this.buffer.f64},B.prototype.copy_to=function(D){for(var 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faceDetection=function(pdmModel,params){var msxmin,msymin,msymax,msmodelheight,element;void 0===params&&(params={}),void 0===params.workSize&&(params.workSize=200),void 0===params.minScale&&(params.minScale=2),void 0===params.scaleFactor&&(params.scaleFactor=1.15),void 0===params.useCanny&&(params.useCanny=!1),void 0===params.edgesDensity&&(params.edgesDensity=.13),void 0===params.equalizeHistogram&&(params.equalizeHistogram=!1),void 0===params.min_neighbors&&(params.min_neighbors=2),void 0===params.confidenceThreshold&&(params.confidenceThreshold=106.1),void 0===params.useWebWorkers&&(params.useWebWorkers=!0),window.Worker||(params.useWebWorkers=!1);var mossef_lefteye,mossef_righteye,mossef_nose,model=pdmModel,mosseFilter=mosse.mosseFilter,left_eye_filter=mosse.filters.left_eye_filter,right_eye_filter=mosse.filters.right_eye_filter,nose_filter=mosse.filters.nose_filter,right_eye_position=[0,0],left_eye_position=[0,0],nose_position=[0,0];model.hints&&mosseFilter&&left_eye_filter&&right_eye_filter&&nose_filter?((mossef_lefteye=new mosseFilter).load(left_eye_filter),(mossef_righteye=new mosseFilter).load(right_eye_filter),(mossef_nose=new mosseFilter).load(nose_filter)):console.log("MOSSE filters not found, using rough approximation for initialization.");var meanShape=model.shapeModel.meanShape,numPatches=model.patchModel.numPatches;msymax=0,msxmin=msymin=1e6;for(var i=0;imsymax&&(msymax=meanShape[i][1]);msmodelheight=msymax-msymin;var jf=new jsfeat_face(params);this.init=function(video){element=video,jf.init(element)};var getFinegrainedPosition=function(candidate){var translateX,translateY,scaling,rotation,x=candidate.x,y=candidate.y,w=candidate.width,h=candidate.height;if(model.hints&&mosseFilter&&left_eye_filter&&right_eye_filter&&nose_filter){var noseFilterWidth=4.5*w/10,eyeFilterWidth=6*w/10,nose_result=mossef_nose.track(element,Math.round(x+w/2-noseFilterWidth/2),Math.round(y+h*(5/8)-noseFilterWidth/2),noseFilterWidth,noseFilterWidth,!1),right_result=mossef_righteye.track(element,Math.round(x+3*w/4-eyeFilterWidth/2),Math.round(y+.4*h-eyeFilterWidth/2),eyeFilterWidth,eyeFilterWidth,!1),left_result=mossef_lefteye.track(element,Math.round(x+w/4-eyeFilterWidth/2),Math.round(y+.4*h-eyeFilterWidth/2),eyeFilterWidth,eyeFilterWidth,!1);right_eye_position[0]=Math.round(x+3*w/4-eyeFilterWidth/2)+right_result[0],right_eye_position[1]=Math.round(y+.4*h-eyeFilterWidth/2)+right_result[1],left_eye_position[0]=Math.round(x+w/4-eyeFilterWidth/2)+left_result[0],left_eye_position[1]=Math.round(y+.4*h-eyeFilterWidth/2)+left_result[1],nose_position[0]=Math.round(x+w/2-noseFilterWidth/2)+nose_result[0],nose_position[1]=Math.round(y+h*(5/8)-noseFilterWidth/2)+nose_result[1];var lep=model.hints.leftEye,rep=model.hints.rightEye,mep=model.hints.nose,procrustes_params=function(template,shape){for(var templateClone=[],shapeClone=[],i=0;i0?resolve(e.data.faces[0]):reject()}.bind(this),!1),worker.postMessage({w:work_canvas.width,h:work_canvas.height,videoWidth:videoWidth,imageData:imageData,params:params});else{jsfeat_1.imgproc.grayscale(imageData.data,work_canvas.width,work_canvas.height,img_u8),params.equalizeHistogram&&jsfeat_1.imgproc.equalize_histogram(img_u8,img_u8),jsfeat_1.imgproc.compute_integral_image(img_u8,ii_sum,ii_sqsum,classifier.tilted?ii_tilted:null),params.useCanny&&(jsfeat_1.imgproc.canny(img_u8,edg,10,50),jsfeat_1.imgproc.compute_integral_image(edg,ii_canny,null,null)),jsfeat_1.haar.edgesDensity=params.edgesDensity;for(var rects=jsfeat_1.haar.detect_multi_scale(ii_sum,ii_sqsum,ii_tilted,params.useCanny?ii_canny:null,img_u8.cols,img_u8.rows,classifier,params.scaleFactor,params.minScale),i=(rects=jsfeat_1.haar.group_rectangles(rects,params.min_neighbors)).length-1;i>=0;i--)rects[i].confidencebest.neighbors?best=rects[i]:rects[i].neighbors==best.neighbors&&rects[i].confidence>best.confidence&&(best=rects[i]);var sc=videoWidth/img_u8.cols;best.x=best.x*sc|0,best.y=best.y*sc|0,best.width=best.width*sc|0,best.height=best.height*sc|0,resolve(best)}}})}};function FFT$1(){var _tre,_tim,_n=0,_bitrev=null,_cstb=null;function fft(re,im,inv){for(var d,h,ik,m,tmp,wr,wi,xr,xi,n4=_n>>2,l=0;l<_n;l++)l<(m=_bitrev[l])&&(tmp=re[l],re[l]=re[m],re[m]=tmp,tmp=im[l],im[l]=im[m],im[m]=tmp);for(var k=1;k<_n;k<<=1){h=0,d=_n/(k<<1);for(var j=0;j>1;k<=j;)j-=k,k>>=1;j+=k,_bitrev[i]=j}}(),function(){var n2=_n>>1,n4=_n>>2,n8=_n>>3,n2p4=n2+n4,t=Math.sin(Math.PI/_n),dc=2*t*t,ds=Math.sqrt(dc*(2-dc)),c=_cstb[n4]=1,s=_cstb[0]=0;t=2*dc;for(var i=1;imax&&(max=value);var scale=max-min;for(j=0;j>1,x|=x>>2,x|=x>>4,x|=x>>8,x|=x>>16,++x},inplaceNormalizeFilterMatrix=function(response){for(var msize=response.length,max=0,min=1,i=0;imax?response[i]:max,min=response[i]1 to 0->2"," vec2 zeroToTwo = zeroToOne * 2.0;",""," // convert from 0->2 to -1->+1 (clipspace)"," vec2 clipSpace = zeroToTwo - 1.0;"," "," // transform coordinates to regular coordinates"," gl_Position = vec4(clipSpace * vec2(1.0, 1.0), 0, 1);",""," // pass the texCoord to the fragment shader"," v_texCoord = a_texCoord_draw;"," "," v_select = a_patchChoice_draw;","}"].join("\n"),drawResponsesFS=["precision mediump float;","","// our responses","uniform sampler2D u_responses;","","// the texCoords passed in from the vertex shader.","varying vec2 v_texCoord;","varying float v_select;","","const vec4 bit_shift = vec4(256.0*256.0*256.0, 256.0*256.0, 256.0, 1.0);","const vec4 bit_mask = vec4(0.0, 1.0/256.0, 1.0/256.0, 1.0/256.0);","","// packing code from here http://stackoverflow.com/questions/9882716/packing-float-into-vec4-how-does-this-code-work","void main() {"," vec4 colorSum = texture2D(u_responses, v_texCoord);"," float value = 0.0;"," if (v_select < 0.1) {"," value = colorSum[0];"," } else if (v_select > 0.9 && v_select < 1.1) {"," value = colorSum[1];"," } else if (v_select > 1.9 && v_select < 2.1) {"," value = colorSum[2];"," } else if (v_select > 2.9 && v_select < 3.1) {"," value = colorSum[3];"," } else {"," value = 1.0;"," }"," "," vec4 res = fract(value * bit_shift);"," res -= res.xxyz * bit_mask;"," "," //gl_FragColor = vec4(value, value, value, value);"," //gl_FragColor = vec4(1.0, value, 1.0, 1.0);"," gl_FragColor = res;","}"].join("\n");this.init=function(filters,bias,nP,pW,pH,fW,fH){if(fW==fH)if(fW%2!=0&&fH%2!=0){biases=bias,filterWidth=fW,filterHeight=fH,patchWidth=pW,patchHeight=pH,numPatches=nP,numBlocks=Math.floor(numPatches/4)+Math.ceil(numPatches%4/4),canvasWidth=patchWidth,canvasHeight=patchHeight*numBlocks,newCanvasWidth=patchWidth-filterWidth+1,newCanvasHeight=(newCanvasBlockHeight=patchHeight-filterWidth+1)*numPatches,patchCells=Math.floor(numPatches/4)+Math.ceil(numPatches%4/4),textureWidth=patchWidth,textureHeight=patchHeight*patchCells,patchSize=patchWidth*patchHeight,patchArray=new Float32Array(patchSize*patchCells*4);var opp=[1/patchWidth,1/(patchHeight*numBlocks)];if(patchResponseFS=["precision mediump float;","","const vec2 u_onePixelPatches = vec2("+(1/patchWidth).toFixed(10)+","+(1/(patchHeight*numBlocks)).toFixed(10)+");","const vec2 u_onePixelFilters = vec2("+(1/filterWidth).toFixed(10)+","+(1/(filterHeight*numBlocks)).toFixed(10)+");","const float u_halffilterwidth = "+((filterWidth-1)/2).toFixed(1)+";","const float u_halffilterheight = "+((filterHeight-1)/2).toFixed(1)+";","","// our patches","uniform sampler2D u_patches;","// our filters","uniform sampler2D u_filters;","","// the texCoords passed in from the vertex shader.","varying vec2 v_texCoord;","varying vec2 v_texCoordFilters; // this should give us correct filter","","void main() {"," vec4 colorSum = vec4(0.0, 0.0, 0.0, 0.0);"," vec4 maxn = vec4(0.0, 0.0, 0.0, 0.0);"," vec4 minn = vec4(256.0, 256.0, 256.0, 256.0);"," vec4 scale = vec4(0.0, 0.0, 0.0, 0.0);"," vec4 patchValue = vec4(0.0, 0.0, 0.0, 0.0);"," vec4 filterValue = vec4(0.0, 0.0, 0.0, 0.0);"," vec4 filterTemp = vec4(0.0, 0.0, 0.0, 0.0);"," for (int w = 0;w < "+filterWidth+";w++) {"," for (int h = 0;h < "+filterHeight+";h++) {"," patchValue = texture2D(u_patches, v_texCoord + u_onePixelPatches * vec2(float(w)-u_halffilterwidth, float(h)-u_halffilterheight));"," filterValue = texture2D(u_filters, v_texCoordFilters + u_onePixelFilters * vec2(float(w)-u_halffilterwidth, float(h)-u_halffilterheight));"," maxn = max(patchValue, maxn);"," minn = min(patchValue, minn);"," colorSum += patchValue*filterValue;"," filterTemp += filterValue;"," } "," }"," scale = maxn-minn;"," colorSum = (colorSum-(minn*filterTemp))/scale;"," // logistic transformation"," colorSum = 1.0/(1.0 + exp(- (colorSum) ));"," gl_FragColor = colorSum;","}"].join("\n"),patchResponseVS=["attribute vec2 a_texCoord;","attribute vec2 a_position;","","const vec2 u_resolution = vec2("+canvasWidth.toFixed(1)+","+canvasHeight.toFixed(1)+");","const float u_patchHeight = "+(1/numBlocks).toFixed(10)+";","const float u_filterHeight = "+(1/numBlocks).toFixed(10)+";","const vec2 u_midpoint = vec2(0.5 ,"+(1/(2*numBlocks)).toFixed(10)+");","","varying vec2 v_texCoord;","varying vec2 v_texCoordFilters;","","void main() {"," // convert the rectangle from pixels to 0.0 to 1.0"," vec2 zeroToOne = a_position / u_resolution;",""," // convert from 0->1 to 0->2"," vec2 zeroToTwo = zeroToOne * 2.0;",""," // convert from 0->2 to -1->+1 (clipspace)"," vec2 clipSpace = zeroToTwo - 1.0;"," "," // transform coordinates to regular coordinates"," gl_Position = vec4(clipSpace * vec2(1.0, 1.0), 0, 1);"," "," // pass the texCoord to the fragment shader"," v_texCoord = a_texCoord;"," "," // set the filtertexture coordinate based on number filter to use"," v_texCoordFilters = u_midpoint + vec2(0.0, u_filterHeight * floor(a_texCoord[1]/u_patchHeight));","}"].join("\n"),"lbp"in filters&&(lbpResponseFS=["precision mediump float;","","uniform vec2 u_onePixelPatches;","","// our patches","uniform sampler2D u_patches;","","// the texCoords passed in from the vertex shader.","varying vec2 v_texCoord;","","void main() {"," vec4 topLeft = texture2D(u_patches, v_texCoord + vec2(-"+opp[0].toFixed(5)+", -"+opp[1].toFixed(5)+"));"," vec4 topMid = texture2D(u_patches, v_texCoord + vec2(0.0, -"+opp[1].toFixed(5)+"));"," vec4 topRight = texture2D(u_patches, v_texCoord + vec2("+opp[0].toFixed(5)+", -"+opp[1].toFixed(5)+"));"," vec4 midLeft = texture2D(u_patches, v_texCoord + vec2(-"+opp[0].toFixed(5)+", 0.0));"," vec4 midMid = texture2D(u_patches, v_texCoord);"," vec4 midRight = texture2D(u_patches, v_texCoord + vec2("+opp[0].toFixed(5)+", 0.0));"," vec4 bottomLeft = texture2D(u_patches, v_texCoord + vec2(-"+opp[0].toFixed(5)+", "+opp[1].toFixed(5)+"));"," vec4 bottomMid = texture2D(u_patches, v_texCoord + vec2(0.0, "+opp[1].toFixed(5)+"));"," vec4 bottomRight = texture2D(u_patches, v_texCoord + vec2("+opp[0].toFixed(5)+", "+opp[1].toFixed(5)+"));"," vec4 lbp = step(midMid, midRight)*1.0 + step(midMid, topRight)*2.0 + step(midMid, topMid)*4.0;"," lbp = lbp + step(midMid, topLeft)*8.0 + step(midMid, midLeft)*16.0 + step(midMid, bottomLeft)*32.0;"," lbp = lbp + step(midMid, bottomMid)*64.0 + step(midMid, bottomRight)*128.0;"," gl_FragColor = lbp;","}"].join("\n")),"sobel"in filters&&(gradientResponseFS=["precision mediump float;","","uniform vec2 u_onePixelPatches;","","// our patches","uniform sampler2D u_patches;","","// the texCoords passed in from the vertex shader.","varying vec2 v_texCoord;","","void main() {"," vec4 bottomLeft = texture2D(u_patches, v_texCoord + vec2(-"+opp[0].toFixed(5)+", "+opp[1].toFixed(5)+"));"," vec4 bottomRight = texture2D(u_patches, v_texCoord + vec2("+opp[0].toFixed(5)+", "+opp[1].toFixed(5)+"));"," vec4 topLeft = texture2D(u_patches, v_texCoord + vec2(-"+opp[0].toFixed(5)+", -"+opp[1].toFixed(5)+"));"," vec4 topRight = texture2D(u_patches, v_texCoord + vec2("+opp[0].toFixed(5)+", -"+opp[1].toFixed(5)+"));"," vec4 dx = ("," bottomLeft +"," (texture2D(u_patches, v_texCoord + vec2(-"+opp[0].toFixed(5)+", 0.0))*vec4(2.0,2.0,2.0,2.0)) +"," topLeft -"," bottomRight -"," (texture2D(u_patches, v_texCoord + vec2("+opp[0].toFixed(5)+", 0.0))*vec4(2.0,2.0,2.0,2.0)) -"," topRight)/4.0;"," vec4 dy = ("," bottomLeft +"," (texture2D(u_patches, v_texCoord + vec2(0.0, "+opp[1].toFixed(5)+"))*vec4(2.0,2.0,2.0,2.0)) +"," bottomRight -"," topLeft -"," (texture2D(u_patches, v_texCoord + vec2(0.0, -"+opp[1].toFixed(5)+"))*vec4(2.0,2.0,2.0,2.0)) -"," topRight)/4.0;"," vec4 gradient = sqrt((dx*dx) + (dy*dy));"," gl_FragColor = gradient;","}"].join("\n")),(canvas=document.createElement("canvas")).setAttribute("width",patchWidth-filterWidth+1+"px"),canvas.setAttribute("height",(patchHeight-filterHeight+1)*numPatches+"px"),canvas.setAttribute("id","renderCanvas"),canvas.setAttribute("style","display:none;"),(gl=webglUtils_1(canvas,{premultipliedAlpha:!1,preserveDrawingBuffer:!0,antialias:!1})).getExtension("OES_texture_float")){"raw"in filters&&(insertFilter(filters.raw,gl.TEXTURE0),!0),"sobel"in filters&&(insertFilter(filters.sobel,gl.TEXTURE4),sobelInit=!0),"lbp"in filters&&(insertFilter(filters.lbp,gl.TEXTURE5),lbpInit=!0);for(var rectangles=[],halfFilter=(filterWidth-1)/2,i=0;i>0]=array[i]/4294967296+array[i+1]/16777216+array[i+2]/65536+array[i+3]/256;return newArray},normalizeFilterMatrix=function(response){for(var msize=response.length,max=0,min=1,i=0;imax?response[i]:max,min=response[i]max?response[i]:max,min=response[i]msxmax&&(msxmax=meanShape[i][0]),meanShape[i][1]>msymax&&(msymax=meanShape[i][1]);msmodelwidth=msxmax-msxmin,msmodelheight=msymax-msymin,model.scoring&&(scoringWeights=new Float64Array(model.scoring.coef),scoringBias=model.scoring.bias,scoringCanvas.width=model.scoring.size[0],scoringCanvas.height=model.scoring.size[1]),eigenValues=model.shapeModel.eigenValues,weights=model.patchModel.weights,biases=model.patchModel.bias,gaussianPD=numeric1_2_6.rep([numParameters+4,numParameters+4],0);for(i=0;i=0?gaussianPD[i+4][i+4]=1e-7:gaussianPD[i+4][i+4]=1/eigenValues[i];for(i=0;i=2)for(var i=0;ihalfPI&&(rotation-=Math.PI),scaling=currentParameters[1]/Math.sin(rotation),translateX=currentParameters[2],translateY=currentParameters[3],sketchCC.save(),sketchCC.clearRect(0,0,sketchW,sketchH),sketchCC.scale(1/scaling,1/scaling),sketchCC.rotate(-rotation),sketchCC.translate(-translateX,-translateY),sketchCC.drawImage(element,0,0,element.width,element.height),sketchCC.restore();var pdata,pmatrix,grayscaleColor,patchPositions=calculatePositions(currentParameters,!1);if(scoringWeights&&facecheck_count%10==0&&!checkTracking())return resetParameters(),emitEvent("clmtrackrLost",params.eventDispatcher),!1;for(i=0;iclip&&(currentParameters[k+4]>0?currentParameters[k+4]=clip:currentParameters[k+4]=-clip);currentPositions=calculatePositions(currentParameters,!0);var pnsq_x,pnsq_y,positionNorm=0;for(k=0;k=5&&this.getConvergence()<.5&&(params.stopOnConvergence&&this.stop(),emitEvent("clmtrackrConverged",params.eventDispatcher)),currentPositions},this.reset=function(){resetParameters(),runnerElement=void 0,runnerBox=void 0},this.draw=function(canvas,pv,path){var params;params=void 0===pv?currentParameters.slice(0):pv.slice(0);var paths,cc=canvas.getContext("2d");cc.fillStyle="rgb(200,200,200)",cc.strokeStyle="rgb(130,255,50)",paths=void 0===path?model.path.normal:model.path[path];for(var i=0;i=responseList.length&&(responseIndex=0),response}for(var responses=[],i=0;iscmax&&(scmax=scoringData[i]);if(scmax>0){var mean=0;for(i=0;i<440;i++)mean+=scoringData[i];mean/=440;var sd=0;for(i=0;i<440;i++)sd+=(scoringData[i]-mean)*(scoringData[i]-mean);sd/=440,sd=Math.sqrt(sd);var score=0;for(i=0;i<440;i++)scoringData[i]=(scoringData[i]-mean)/sd,score+=scoringData[i]*scoringWeights[i];if(score+=scoringBias,score=1/(1+Math.exp(-score)),5==scoringHistory.length&&scoringHistory.shift(),scoringHistory.push(score),scoringHistory.length>4){meanscore=0;for(i=0;i<5;i++)meanscore+=scoringHistory[i];if((meanscore/=5)