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Make nxm
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| #! /bin/bash | |
| # | |
| # Create a composed n x m image from a single image and | |
| # use the (average) border color as inter-image (gutter) color | |
| # LINUX convert \( aa.png aa.png aa.png aa.png aa.png +append \) \( aa.png aa.png aa.png aa.png aa.png +append \) -append -gaussian-blur 0.5x0.5 x.png | |
| # call make-nxm <image-filename> rows columms [postfilter-command] | |
| # Location of Imagemagick convert/magick: | |
| convert=/opt/magick | |
| POSTFILTER="-gaussian-blur 0.5x0.5" | |
| MARGIN=20 | |
| if [ $# -lt 3 ] ; then | |
| echo | |
| echo "Create a composed n x m image from a single image and" | |
| echo "use the (average) border color as inter-image (gutter) color" | |
| echo | |
| echo "Usage: make-nxm image-filename rows colums [innermargin] [postfilter-command]" | |
| echo " default gap between images: ${MARGIN}" | |
| echo " default postfilter: ${POSTFILTER}" | |
| echo | |
| echo "Examples: make-nxm img.png 2 4" | |
| echo " make-nxm img.png 2 4 ${MARGIN}" | |
| echo " make-nxm img.png 2 4 ${MARGIN} ${POSTFILTER}" | |
| echo | |
| echo " create output image 2x4_img.png" | |
| echo " composed of 2 rows and 4 columns of img.png" | |
| echo " with a gap of ${MARGIN} pixels between the images" | |
| echo " with gaussian blur filter 0.5x0.5 (default filter)" | |
| echo | |
| exit | |
| fi | |
| if [[ $4 == ?(-)+([[:digit:]]) ]] ; then | |
| MARGIN=$4 | |
| if [ $# -gt 4 ] ; then | |
| POSTFILTER="$5 $6 $7 $8 $9" | |
| fi | |
| else | |
| if [ $# -gt 3 ] ; then | |
| POSTFILTER="$4 $5 $6 $7 $8" | |
| fi | |
| fi | |
| FILENAME=$1 | |
| ROWS=$2 | |
| COLUMNS=$3 | |
| OUTFILENAME=${FILENAME%.*}_${ROWS}x${COLUMNS}-${MARGIN}.${FILENAME##*.} | |
| # default | |
| # INNERMARGIN="+append" | |
| GUTTERCOLOR=`$convert ${FILENAME} -set option:ww %w -set option:hh %h \( +clone -fuzz 15% -trim -alpha set -channel rgba -evaluate set 0% -format "excess width=%[fx:ww-w],excess height=%[fx:hh-h]\n" \) -compose copy -flatten -scale 1x1! -alpha off -format "border color=%[pixel:u.p{0,0}]\n" info: | sed -e "s/border color=s//" -` | |
| GUTTERWIDTH="-background ${GUTTERCOLOR} -splice ${MARGIN}x${MARGIN}+0+0 +append -chop ${MARGIN}x0+0+0" | |
| echo "${ROWS} rows and ${COLUMNS} columns" | |
| echo "margin (gutter width) between images: ${MARGIN}px" | |
| echo "gutter color: ${GUTTERCOLOR}" | |
| echo "postfilter: ${POSTFILTER}" | |
| y="" | |
| col=1; while [ $col -le $COLUMNS ]; do y="$y $FILENAME "; col=$[$col+1]; done | |
| row=1; while [ $row -le $ROWS ]; do z="$z ( $y $GUTTERWIDTH ) "; row=$[$row+1]; done | |
| $convert $z -append -chop 0x${MARGIN}+0+0 $POSTFILTER ${OUTFILENAME} | |
| $convert ${OUTFILENAME} -resize 3000 ${OUTFILENAME%.*}_reduced.${OUTFILENAME##*.} |
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