#!/bin/bash # # Developed by Fred Weinhaus 3/25/2013 .......... revised 4/25/2015 # # ------------------------------------------------------------------------------ # # Licensing: # # Copyright © Fred Weinhaus # # My scripts are available free of charge for non-commercial use, ONLY. # # For use of my scripts in commercial (for-profit) environments or # non-free applications, please contact me (Fred Weinhaus) for # licensing arrangements. My email address is fmw at alink dot net. # # If you: 1) redistribute, 2) incorporate any of these scripts into other # free applications or 3) reprogram them in another scripting language, # then you must contact me for permission, especially if the result might # be used in a commercial or for-profit environment. # # My scripts are also subject, in a subordinate manner, to the ImageMagick # license, which can be found at: http://www.imagemagick.org/script/license.php # # ------------------------------------------------------------------------------ # #### # # USAGE: lucisarteffect [-g gain] [-s saturation] infile outfile # USAGE: lucisarteffect [-h or -help] # # OPTIONS: # # -g gain effect gain; float>=0; default=0.3 # -s saturation saturation of cartoon; integer>=0; default=60 # ### # # NAME: LUCISARTEFFECT # # PURPOSE: To apply a LucisArt-like effect to an image. # # DESCRIPTION: LUCISARTEFFECT applies a LucisArt-like effect to an image.. # # # ARGUMENTS: # # -g gain ... gain of the effect. Values are floats>=0. The default=0.3. # # -s saturation ... SATURATION for the effect. Values are integer>=0. The # default=60. # # Reference: http://www.lucisart.com/ # # CAVEAT: No guarantee that this script will work on all platforms, # nor that trapping of inconsistent parameters is complete and # foolproof. Use At Your Own Risk. # ###### # # set default values gain=0.3 saturation=60 # set directory for temporary files dir="." # suggestions are dir="." or dir="/tmp" # set up functions to report Usage and Usage with Description PROGNAME=`type $0 | awk '{print $3}'` # search for executable on path PROGDIR=`dirname $PROGNAME` # extract directory of program PROGNAME=`basename $PROGNAME` # base name of program usage1() { echo >&2 "" echo >&2 "$PROGNAME:" "$@" sed >&2 -e '1,/^####/d; /^###/g; /^#/!q; s/^#//; s/^ //; 4,$p' "$PROGDIR/$PROGNAME" } usage2() { echo >&2 "" echo >&2 "$PROGNAME:" "$@" sed >&2 -e '1,/^####/d; /^######/g; /^#/!q; s/^#*//; s/^ //; 4,$p' "$PROGDIR/$PROGNAME" } # function to report error messages errMsg() { echo "" echo $1 echo "" usage1 exit 1 } # function to test for minus at start of value of second part of option 1 or 2 checkMinus() { test=`echo "$1" | grep -c '^-.*$'` # returns 1 if match; 0 otherwise [ $test -eq 1 ] && errMsg "$errorMsg" } # test for correct number of arguments and get values if [ $# -eq 0 ] then # help information echo "" usage2 exit 0 elif [ $# -gt 6 ] then errMsg "--- TOO MANY ARGUMENTS WERE PROVIDED ---" else while [ $# -gt 0 ] do # get parameter values case "$1" in -h|-help) # help information echo "" usage2 exit 0 ;; -g) # get gain shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID GAIN SPECIFICATION ---" checkMinus "$1" gain=`expr "$1" : '\([.0-9]*\)'` [ "$gain" = "" ] && errMsg "--- GAIN=$gain MUST BE A NON-NEGATIVE FLOAT VALUE (with no sign) ---" ;; -s) # get saturation shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID SATURATION SPECIFICATION ---" checkMinus "$1" saturation=`expr "$1" : '\([0-9]*\)'` [ "$saturation" = "" ] && errMsg "--- SATURATION=$saturation MUST BE A NON-NEGATIVE INTEGER VALUE (with no sign) ---" ;; -) # STDIN and end of arguments break ;; -*) # any other - argument errMsg "--- UNKNOWN OPTION ---" ;; *) # end of arguments break ;; esac shift # next option done # # get infile and outfile infile="$1" outfile="$2" fi # test that infile provided [ "$infile" = "" ] && errMsg "NO INPUT FILE SPECIFIED" # test that outfile provided [ "$outfile" = "" ] && errMsg "NO OUTPUT FILE SPECIFIED" # setup temporary images tmpA1="$dir/lucisartseffect_1_$$.mpc" tmpB1="$dir/lucisartseffect_1_$$.cache" trap "rm -f $tmpA1 $tmpB1;" 0 trap "rm -f $tmpA1 $tmpB1; exit 1" 1 2 3 15 trap "rm -f $tmpA1 $tmpB1; exit 1" ERR # read the input image into the temporary cached image and test if valid convert -quiet "$infile" +repage "$tmpA1" || echo "--- 1 FILE $infile DOES NOT EXIST OR IS NOT AN ORDINARY FILE, NOT READABLE OR HAS ZERO size ---" # get im version im_version=`convert -list configure | \ sed '/^LIB_VERSION_NUMBER */!d; s//,/; s/,/,0/g; s/,0*\([0-9][0-9]\)/\1/g' | head -n 1` # colorspace RGB and sRGB swapped between 6.7.5.5 and 6.7.6.7 # though probably not resolved until the latter # then -colorspace gray changed to linear between 6.7.6.7 and 6.7.8.2 # then -separate converted to linear gray channels between 6.7.6.7 and 6.7.8.2, # though probably not resolved until the latter # so -colorspace HSL/HSB -separate and -colorspace gray became linear # but we need to use -set colorspace RGB before using them at appropriate times # so that results stay as in original script # The following was determined from various version tests using lucisart. # with IM 6.7.4.10, 6.7.6.10, 6.8.3.3 # note from 6.8.3.4, 6.8.3.5 to 6.8.3.9 and 6.8.4.0 something changed and cannot make them match 6.7.4.10 and 6.7.6.10 if [ "$im_version" -lt "06070607" -o "$im_version" -gt "06070707" ]; then setcspace="-set colorspace RGB" else setcspace="" fi # no need for setcspace for grayscale or channels after 6.8.5.4 if [ "$im_version" -gt "06080504" ]; then setcspace="" fi # set up blurring and unsharpening # note bug in -blur with large kernels from IM 6.8.3.4 to IM 6.8.3.10 (different and slower) -- fixed at 6.8.4.2 -- though does not affect small kernel # just keep using morphology blur as -blur after 6.8.4.2 calls morphology blur if [ "$im_version" -ge "06080304" ]; then blurring="-morphology convolve blur:0x6;blur:0x6+90" else blurring="-blur 0x6" fi # process image # clone the image and apply DoG filter # screen composite the DoG and image # clone original image again, totally desaturate and apply 6 pixel blur to grayscale # overlay composite the blurred and desaturated image with the previous composite # apply unsharpening with the mixing factor as gain # get output # desaturate the result some convert $tmpA1 $setcspace \ \( -clone 0 -define convolve:scale=1 -morphology Convolve DoG:0,0,2 \) \ -compose screen -composite -clamp \ \( -clone 0 -modulate 100,0,100 -negate $blurring \) \ -compose overlay -composite \ -unsharp 0x9+${gain}+0 \ -define modulate:colorspace=HCL -modulate 100,$saturation,100 \ "$outfile" exit 0