ImageGenerator/img_generator.sh

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#!/bin/bash
usage(){
cat << HEREDOC
$0 [-h] [MAXFILE] [TAG]
This script loads and merges images based on random words
-h this help
MAXFILE Limit number of images to compose
TAG Don't pick tag randomly
HEREDOC
exit 1
}
panic(){ echo $@; exit 2; }
[[ $1 == "-h" ]] || [[ $1 == --help ]] && usage
cd $( dirname $0 )
MAXFILE=${1:-20}
TAG=${2}
TMPFILE=$(mktemp)
# Search images
for i in {1..99}; do
RAND=$( echo | awk ' { srand(); print int(rand() * 99171 ) } ')
WORD=$(awk "NR==$RAND" /usr/share/dict/words);
[ -n "$TAG" ] && WORD=$TAG
URL="https://api.flickr.com/services/feeds/photos_public.gne?tags=$WORD&tagmode=any";
IMGLIST=($(curl -s "$URL" | grep '"enclosure"'| sed -r 's_^.*href="(.*jpg)".*$_\1_' | grep "^http"))
[ $i -eq 2 ] && [ -n "$TAG" ] && panic "Failed to load tag" ]
[ 2 -gt ${#IMGLIST[@]} ] && continue
break;
done
# Download images
mkdir -p images
for i in $( seq 0 $(( ${#IMGLIST[@]} -1 )) ); do
IMGURL="${IMGLIST[$i]}"
[[ ${IMGLIST[$i]} =~ ^http ]] || continue
wget -q "$IMGURL" -P images
[[ O -eq $? ]] && FILELIST+=(images/$(basename ${IMGLIST[$i]} ) )
[ $i -gt $(( $MAXFILE -2 )) ] && break
done
# Create synthetic image
mkdir -p synthesis
SYNTH_NAME="synthesis/$(date +%s)-$WORD.jpg"
SRC=${FILELIST[0]}
#copy the first image
cp $SRC $SYNTH_NAME
for i in $( seq 1 $(( ${#FILELIST[@]} -1 )) ); do
composite ${FILELIST[$i]} $SYNTH_NAME -gravity center -compose difference "$SYNTH_NAME"
done
mkdir -p logs
echo "File generated with word $WORD and ${#FILELIST[@]} images: file://$PWD/$SYNTH_NAME" | tee "logs/$(basename $SYNTH_NAME)"
echo "${FILELIST[@]}" | tee -a "logs/$(basename $SYNTH_NAME)"