#!/bin/bash # # Developed by Fred Weinhaus 12/16/2015 .......... revised 12/16/2015 # # ------------------------------------------------------------------------------ # # 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: modulatecolor1 [-c color] [-b brightness] [-s saturation] [-u units] # [-h hue] [-m mode] [-C colorspace] infile outfile # # USAGE: modulatecolor1 [-help] # # OPTIONS: # # -c color color to modify: red (r), yellow (y), green (g), # cyan (c), blue (b), magenta (m); default=red # -b brightness percent brightness; float>=0; default=100 (no change) # -s saturation percent saturation; float>=0; default=100 (no change) # -u units units for hue; percent (p) or degrees (d); # default=percent # -h hue hue value 0<=float<=100 percent or 0<=float<=360 # degrees; default=0 (red stays red) # -m mode mode for hue values; choices are: relative (r) or # absolute (a); default=absolute # -C colorspace colorspace in which to modulate the image; choices are: # HSL or HCLp; default=HSL # ### # # NAME: MODULATECOLOR1 # # PURPOSE: To change brightness, saturation and/or hue for any primary or # secondary color in an image. # # DESCRIPTION: MODULATECOLOR1 changes the brightness and/or saturation and/or # hue for any primary or secondary color in an image. Hues are arranged in a # cyclical order in the range 0 to 100 percent or 0 to 360 degrees. Hue may # be changed any amount in those ranges per the units specified. The colors # allowed are: red, yellow, green, cyan, blue and magenta. Units for hue may # be either percent or degrees. # # OPTIONS: # # -c color ... COLOR to modify. The choices are: red (r), yellow (y), # green (g), cyan (c), blue (b) or magenta (m). The default=red. # # -b brightness ... BRIGHTNESS is the absolute percent brightness. Values are # floats>=0. The default=100 (no change). # # -s saturation ... SATURATION is the absolute percent saturation. Values are # floats>=0. The default=100 (no change). # # -u units ... UNITS for hue. Choices are: percent (p) or degrees (d). The # default=degrees. # # -m mode ... MODE for hue values. The choices are: relative (r) or # absolute (a). Relative means the replacement hue value will be a shift # relative to the specified color. Absolute means the hue value will be the # exact hue value that will be used to replace the specified color. The # default=absolute. # # -h hue ... HUE is the absolute hue value to be used to replace the hue of # the specified color. Values are 0<=floats<=100 for percent or 0<=floats<=360 # for degrees. The default=0 (red stays red). Hue change is cyclical in the # range from 0 to either 100 percent or 360 degrees. So a hue value of 100 # percent or 360 degrees is equivalent to 0 or no change. # # -C colorspace ... COLORSPACE is the colorspace in which to modulate the # image. The choices are: HSL or HCLp. # # REQUIREMENTS: IM 6.5.3-7 so that -modulate uses HSL and not HSB colorspace. # HCLp modulation is available as of version 6.8.6-7. # # 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 color="red" # color: red, yellow, green, cyan, blue, magenta brightness=100 # brightness percent saturation=100 # saturation percent units="degrees" # units for hue; percent or degrees hue=0 # hue value (red) mode="absolute" # hue mode: absolute or relative colorspace="hsl" # modulation color space # set directory for temporary files tmpdir="." # suggestions are tmpdir="." or tmpdir="/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 16 ] then errMsg "--- TOO MANY ARGUMENTS WERE PROVIDED ---" else while [ $# -gt 0 ] do # get parameter values case "$1" in -help) # help information echo "" usage2 exit 0 ;; -c) # get color shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID COLOR SPECIFICATION ---" checkMinus "$1" color=`echo "$1" | tr '[A-Z]' '[a-z]'` case "$color" in red|r) color="red";; yellow|y) color="yellow";; green|g) color="green";; cyan|c) color="cyan";; blue|b) color="blue";; magenta|m) color="magenta";; *) errMsg "--- COLOR=$color IS AN INVALID VALUE ---" esac ;; -b) # get brightness shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID BRIGHTNESS SPECIFICATION ---" checkMinus "$1" brightness=`expr "$1" : '\([.0-9]*\)'` [ "$brightness" = "" ] && errMsg "--- BRIGHTNESS=$brightness MUST BE A NON-NEGATIVE FLOAT ---" ;; -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 FLOAT ---" ;; -u) # get units shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID UNITS SPECIFICATION ---" checkMinus "$1" units=`echo "$1" | tr '[A-Z]' '[a-z]'` case "$units" in percent|p) units="percent";; degrees|d) units="degrees";; *) errMsg "--- UNITS=$units IS AN INVALID VALUE ---" esac ;; -h) # get hue shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID HUE SPECIFICATION ---" checkMinus "$1" hue=`expr "$1" : '\([.0-9]*\)'` [ "$hue" = "" ] && errMsg "--- HUE=$hue MUST BE A NON-NEGATIVE FLOAT ---" ;; -m) # get mode shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID MODE SPECIFICATION ---" checkMinus "$1" mode=`echo "$1" | tr '[A-Z]' '[a-z]'` case "$mode" in relative|r) mode="relative";; absolute|a) mode="absolute";; *) errMsg "--- MODE=$mode IS AN INVALID VALUE ---" esac ;; -C) # get colorspace shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID COLORSPACE SPECIFICATION ---" checkMinus "$1" colorspace=`echo "$1" | tr '[A-Z]' '[a-z]'` case "$colorspace" in hsl) ;; hclp) ;; *) errMsg "--- COLORSPACE=$colorspace IS AN INVALID VALUE ---" esac ;; -) # 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 [ "$outfile" = "" ] && errMsg "NO OUTPUT FILE SPECIFIED" # define dir dir="$tmpdir/COLORBALANCE.$$" mkdir "$dir" || errMsg "--- FAILED TO CREATE TEMPORARY FILE DIRECTORY ---" trap "rm -rf $dir;" 0 trap "rm -rf $dir; exit 1" 1 2 3 15 trap "rm -rf $dir; exit 1" ERR # read input image convert -quiet "$infile" $dir/tmpI.mpc || echo "--- FILE $infile DOES NOT EXIST OR IS NOT AN ORDINARY FILE, NOT READABLE OR HAS ZERO SIZE ---" # test hue values if [ "$units" = "percent" ]; then test=`convert xc: -format "%[fx:$hue>100?1:0]" info:` [ $test -eq 1 ] && errMsg "--- HUE MUST BE AN INTEGER BETWEEN 0 AND 100 ---" elif [ "$units" = "degrees" ]; then test=`convert xc: -format "%[fx:$hue>360?1:0]" info:` [ $test -eq 1 ] && errMsg "--- HUE MUST BE AN INTEGER BETWEEN 0 AND 360 ---" fi # set up hue for units if [ "$mode" = "relative" ]; then if [ "$units" = "degrees" ]; then hue=`convert xc: -format "%[fx:100+(200*$hue/360)]" info:` elif [ "$units" = "percent" ]; then hue=`convert xc: -format "%[fx:100+(2*$hue)]" info:` fi elif [ "$mode" = "absolute" ]; then if [ "$units" = "degrees" ]; then if [ "$color" = "red" ]; then hue=`convert xc: -format "%[fx:100+(200*$hue/360)]" info:` elif [ "$color" = "yellow" ]; then hue=`convert xc: -format "%[fx:100+(200*($hue-60)/360)]" info:` elif [ "$color" = "green" ]; then hue=`convert xc: -format "%[fx:100+(200*($hue-120)/360)]" info:` elif [ "$color" = "cyan" ]; then hue=`convert xc: -format "%[fx:100+(200*($hue-180)/360)]" info:` elif [ "$color" = "blue" ]; then hue=`convert xc: -format "%[fx:100+(200*($hue-240)/360)]" info:` elif [ "$color" = "magenta" ]; then hue=`convert xc: -format "%[fx:100+(200*($hue-300)/360)]" info:` fi elif [ "$units" = "percent" ]; then if [ "$color" = "red" ]; then hue=`convert xc: -format "%[fx:100+(2*$hue]" info:` elif [ "$color" = "yellow" ]; then hue=`convert xc: -format "%[fx:100+(2*($hue-100*60/360))]" info:` elif [ "$color" = "green" ]; then hue=`convert xc: -format "%[fx:100+(2*($hue-100*120/360))]" info:` elif [ "$color" = "cyan" ]; then hue=`convert xc: -format "%[fx:100+(2*($hue-100*180/360))]" info:` elif [ "$color" = "blue" ]; then hue=`convert xc: -format "%[fx:100+(2*($hue-100*240/360))]" info:` elif [ "$color" = "magenta" ]; then hue=`convert xc: -format "%[fx:100+(2*($hue-100*300/360))]" info:` fi fi fi #echo "hue=$hue; saturation=$saturation; brightness=$brightness; colorspace=$colorspace" # do processing # note: need to work in secondary colors for hue, but in rgb space, # so for red, process hue modulation on green and blue if [ "$color" = "red" ]; then convert $dir/tmpI.mpc \ \( -clone 0 -define modulate:colorspace=$colorspace -modulate $brightness,$saturation,$hue \) \ \( -clone 0 -channel gb -separate +channel -negate -clone 0 -channel r -separate -evaluate-sequence multiply \) \ -compose over -composite "$outfile" elif [ "$color" = "yellow" ]; then convert $dir/tmpI.mpc \ \( -clone 0 -define modulate:colorspace=$colorspace -modulate $brightness,$saturation,$hue \) \ \( -clone 0 -channel b -separate +channel -negate -clone 0 -channel rg -separate +channel -evaluate-sequence multiply \) \ -compose over -composite "$outfile" elif [ "$color" = "green" ]; then convert $dir/tmpI.mpc \ \( -clone 0 -define modulate:colorspace=$colorspace -modulate $brightness,$saturation,$hue \) \ \( -clone 0 -channel rb -separate +channel -negate -clone 0 -channel g -separate -evaluate-sequence multiply \) \ -compose over -composite "$outfile" elif [ "$color" = "cyan" ]; then convert $dir/tmpI.mpc \ \( -clone 0 -define modulate:colorspace=$colorspace -modulate $brightness,$saturation,$hue \) \ \( -clone 0 -channel r -separate +channel -negate -clone 0 -channel bg -separate +channel -evaluate-sequence multiply \) \ -compose over -composite "$outfile" elif [ "$color" = "blue" ]; then convert $dir/tmpI.mpc \ \( -clone 0 -define modulate:colorspace=$colorspace -modulate $brightness,$saturation,$hue \) \ \( -clone 0 -channel rg -separate +channel -negate -clone 0 -channel b -separate -evaluate-sequence multiply \) \ -compose over -composite "$outfile" elif [ "$color" = "magenta" ]; then convert $dir/tmpI.mpc \ \( -clone 0 -define modulate:colorspace=$colorspace -modulate $brightness,$saturation,$hue \) \ \( -clone 0 -channel g -separate +channel -negate -clone 0 -channel rb -separate +channel -evaluate-sequence multiply \) \ -compose over -composite "$outfile" fi exit 0