#!/bin/bash # # Developed by Fred Weinhaus 11/9/2012 .......... revised 11/29/16 # # ------------------------------------------------------------------------------ # # 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: coloration [-h hue] [-s sat] [-l light] [-r red] [-g green] [-b blue] # [-B bright] [-C contrast] infile outfile [lutfile] # # USAGE: coloration [-help] # # OPTIONS: # # -h hue hue value to use for coloration; values are integers # either in range 0 to 360 (degrees) or 0 to 100 (percent) # depending upon the units argument; default=0 (red) # -s sat saturation value to use for coloration; values are # integers in range 0 to 100 (percent); default=50 # -l light lightness value to use for coloration; values are # integers in range -100 to 100(percent); default=0 # -u units units for hue; choices are: degrees (d) or percent (p); # default=degrees # -r red red mixing percent; float; default=29.9 # -g green green mixing percent; float; default=58.7 # -b blue blue mixing percent; float; default=11.4 # -B bright percent brightness change in coloration processing; # -100<=float<=100; default=10 (to match GIMP better) # -C contrast percent contrast change in coloration processing; # -100<=float<=100; default=-10 (to match GIMP better) # ### # # NAME: COLORATION # # PURPOSE: To mix the color channels from an image into a grayscale image and # tints it. # # DESCRIPTION: COLORATION mixes the color channels from an image into a # single grayscale image using a weighted combination and then tints it in a # manner similar to GIMP Colorize and using argument values similar to those # used by GIMP. The script generates a color look up table (lut) and applies it # against the grayscale version of the image. The lut can be saved, if desired, # for future use and will have a size of 256x20 pixels. # # # OPTIONS: # # -h hue ... HUE value to use for coloration. The values are integers either # in the range 0 to 360(degrees) or 0 to 100(percent) depending upon the units # argument. The default=0 (red). # # -s sat ... SAT is the saturation value to use for coloration. The values are # integers in the range 0 to 100 (percent). The default=50. # # -l light ... LIGHT is the lightness value to use for coloration. The values # are integers in range -100 to 100(percent). The default=0 is the normal # amount of lightness. Larger values will use IM colorize to mix pure white # with the result. Smaller values will use IM colorize to mix pure black # with the result. # # -u units ... UNITS for specifying hue values. The choices are: raw (r) or # percent (p). The default=raw # # -r red ... RED is the red mix percent (weight) in forming the grayscale # image. Values are (pos. or neg.) floats. The default=29.9 is equivalent to # IM non-linear grayscale. Nominally the r,g,b,o weights should total 100%. # Weights are not relevant to form=desat. # # -g green ... GREEN is the red mix percent (weight) in forming the grayscale # image. Values are (pos. or neg.) floats. The default=58.7 is equivalent to # IM non-linear grayscale. Nominally the r,g,b,o weights should total 100%. # Weights are not relevant to form=desat. # # -b blue ... BLUE is the red mix percent (weight) in forming the grayscale # image. Values are (pos. or neg.) floats. The default=11.4 is equivalent to # IM non-linear grayscale. Nominally the r,g,b,o weights should total 100%. # Weights are not relevant to form=desat. # # -B bright ... BRIGHT is the percent change in brightness during processing. # Values are floats in the range of -100 to 100. The default=10 # (to match GIMP better). # # -C contrast ... CONTRAST is the percent change in contrast during processing. # image. Values are floats in the range of -100 to 100. The default=-10 # (to match GIMP better). # # ###### # # set default values hue=0 # hue value sat=50 # saturation value light=0 # lightness value units="degrees" # hue units; degrees (0-360) or percent (0-100) red=29.9 # red mix percent; pos or neg float; default=29.9 green=58.7 # green mix percent; pos or neg float; default=58.7 blue=11.4 # blue mix percent; pos or neg float; default=11.4 bright=10 # percent change in brightness contrast=-10 # percent change in contrast filter="cubic" # lut interpolation filter lutfile="" # lut file created only if specified; default is no lutfile # 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 19 ] 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 ;; -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 AN INTEGER ---" testA=`echo "$hue < 0" | bc` testB=`echo "$hue > 360" | bc` [ $testA -eq 1 -o $testB -eq 1 ] && errMsg "--- HUE=$hue MUST BE AN INTEGER BETWEEN 0 AND 360 ---" ;; -s) # get sat shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID SAT SPECIFICATION ---" checkMinus "$1" sat=`expr "$1" : '\([0-9]*\)'` [ "$sat" = "" ] && errMsg "--- SAT=$sat MUST BE AN INTEGER ---" testA=`echo "$sat < 0" | bc` testB=`echo "$sat > 100" | bc` [ $testA -eq 1 -o $testB -eq 1 ] && errMsg "--- SAT=$sat MUST BE AN INTEGER BETWEEN 0 AND 100 ---" ;; -l) # get light shift # to get the next parameter # test if parameter starts with minus sign #errorMsg="--- INVALID LIGHT SPECIFICATION ---" #checkMinus "$1" light=`expr "$1" : '\([-]*[0-9]*\)'` [ "$light" = "" ] && errMsg "--- LIGHT=$light MUST BE AN INTEGER ---" testA=`echo "$light < -100" | bc` testB=`echo "$light > 100" | bc` [ $testA -eq 1 -o $testB -eq 1 ] && errMsg "--- LIGHT=$light MUST BE AN INTEGER BETWEEN -100 AND 100 ---" ;; -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 degrees|d) units="degrees";; percent|p) units="percent";; *) errMsg "--- UNITS=$units IS AN INVALID VALUE ---" esac ;; -r) # get red shift # to get the next parameter # test if parameter starts with minus sign #errorMsg="--- INVALID RED SPECIFICATION ---" #checkMinus "$1" red=`expr "$1" : '\([-]*[.0-9]*\)'` [ "$red" = "" ] && errMsg "--- RED=$red MUST BE A FLOAT ---" ;; -g) # get green shift # to get the next parameter # test if parameter starts with minus sign #errorMsg="--- INVALID GREEN SPECIFICATION ---" #checkMinus "$1" green=`expr "$1" : '\([-]*[.0-9]*\)'` [ "$green" = "" ] && errMsg "--- GREEN=$green MUST BE A FLOAT ---" ;; -b) # get blue shift # to get the next parameter # test if parameter starts with minus sign #errorMsg="--- INVALID BLUE SPECIFICATION ---" #checkMinus "$1" blue=`expr "$1" : '\([-]*[.0-9]*\)'` [ "$blue" = "" ] && errMsg "--- BLUE=$blue MUST BE A FLOAT ---" ;; -B) # get bright shift # to get the next parameter # test if parameter starts with minus sign #errorMsg="--- INVALID BRIGHT SPECIFICATION ---" #checkMinus "$1" bright=`expr "$1" : '\([-]*[.0-9]*\)'` [ "$bright" = "" ] && errMsg "--- BRIGHT=$bright MUST BE A FLOAT ---" testA=`echo "$bright < -100" | bc` testB=`echo "$bright > 100" | bc` [ $testA -eq 1 -o $testB -eq 1 ] && errMsg "--- BRIGHT=$bright MUST BE A FLOAT BETWEEN -100 AND 100 ---" ;; -C) # get contrast shift # to get the next parameter # test if parameter starts with minus sign #errorMsg="--- INVALID CONTRAST SPECIFICATION ---" #checkMinus "$1" contrast=`expr "$1" : '\([-]*[.0-9]*\)'` [ "$contrast" = "" ] && errMsg "--- CONTRAST=$contrast MUST BE A FLOAT ---" testA=`echo "$contrast < -100" | bc` testB=`echo "$contrast > 100" | bc` [ $testA -eq 1 -o $testB -eq 1 ] && errMsg "--- CONTRAST=$contrast MUST BE A FLOAT BETWEEN -100 AND 100 ---" ;; -) # STDIN and end of arguments break ;; -*) # any other - argument errMsg "--- UNKNOWN OPTION ---" ;; *) # end of arguments break ;; esac shift # next option done # # get infile, outfile and lutfile if [ $# -eq 3 ]; then infile="$1" outfile="$2" lutfile="$3" elif [ $# -eq 2 ]; then infile="$1" outfile="$2" elif [ $# -eq 1 ]; then lutfile="$1" else errMsg "--- INCONSISTENT NUMBER OF INPUT AND OUTPUT IMAGES SPECIFIED ---" fi fi # test that infile provided [ "$infile" = "" ] && errMsg "--- NO INPUT FILE SPECIFIED ---" # test that outfile provided [ "$outfile" = "" ] && errMsg "--- NO OUTPUT FILE SPECIFIED ---" # set up temp files tmpA1="$dir/color2gray_A_$$.mpc" tmpA2="$dir/color2gray_A_$$.cache" tmpB1="$dir/color2gray_B_$$.mpc" tmpB2="$dir/color2gray_B_$$.cache" tmpL="$dir/color2gray_L_$$.miff" trap "rm -f $tmpA1 $tmpA2 $tmpB1 $tmpB2 $tmpL;" 0 trap "rm -f $tmpA1 $tmpA2 $tmpB1 $tmpB2 $tmpL; exit 1" 1 2 3 15 trap "rm -f $tmpA1 $tmpA2 $tmpB1 $tmpB2 $tmpL; exit 1" ERR # read and test input convert -quiet "$infile" +repage "$tmpA1" || echo "--- 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 cartoon. # with IM 6.7.4.10, 6.7.6.10, 6.8.0.3 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 # get colorspace # colorspace swapped at IM 6.7.5.5, but not properly fixed until 6.7.6.6 # before swap verbose info reported colorspace=RGB after colorspace=sRGB colorspace=`identify -ping -verbose $tmpA1 | sed -n 's/^.*Colorspace: \([^ ]*\).*$/\1/p'` if [ "$colorspace" != "RGB" -a "$colorspace" != "sRGB" ]; then errMsg "--- FILE $infile MUST BE RGB or sRGB ---" fi # test if partially or all transparent alpha channel # if so save alpha channel test1=`convert $tmpA1 -format "%A" info:` test2=1 if [ "$test1" = "True" ]; then test2=`convert $tmpA1 -format "%[fx:mean]" info:` if [ "$test2" != "1" ]; then convert $tmpA1 -alpha extract $tmpB1 fi fi #echo "colorspace=$colorspace; test1=$test1; test2=$test2" # convert channel ratios from percent to fraction rf=`convert xc: -format "%[fx:$red/100]" info:` gf=`convert xc: -format "%[fx:$green/100]" info:` bf=`convert xc: -format "%[fx:$blue/100]" info:` #echo "rf=$rf; gf=$gf; bf=$bf; of=$of" # convert hue per IM version # note: starting at IM 6.9.2.1 HSL txt output is in format HSL(0-360,0-255 or %,0-255 or %) and raw values are all non-percent again # also at IM 6.9.2.1 all raw hsl values including alpha now back to range 0-quantumrange if [ "$units" = "degrees" -a "$im_version" -lt "06090201" ]; then # convert to percent hue=`convert xc: -format "%[fx:100*$hue/360]" info:` elif [ "$units" = "percent" ] && [ "$im_version" -ge "06090201" -o "$im_version" -lt "06050606" ]; then # convert to 0 to 360 hue=`convert xc: -format "%[fx:360*$hue/100]" info:` fi # convert light to GIMP-like (percent) values test=`convert xc: -format "%[fx:$light<0?0:1]" info:` light=`convert xc: -format "%[fx:abs($light)]" info:` if [ $test -eq 0 ]; then fillcolor="black" else fillcolor="white" fi # convert bright to lut shift in pixels bright=`convert xc: -format "%[fx:$bright*128/100]" info:` # create colorized lut if [ "$im_version" -lt "06090201" ]; then hslcolor="hsl($hue%,$sat%,50%)" elif [ "$im_version" -ge "06090201" ]; then hslcolor="hsl($hue,$sat%,50%)" fi convert -size 1x1 xc:black xc:"$hslcolor" xc:white +append \ -filter $filter -resize 256x1! \ $setcspace -contrast-stretch 0 \ -virtual-pixel edge -fx "u.p{(i-(w/2))*(100+$contrast)/(100)+(w/2)+$bright,j}" \ $tmpL # save lut if [ "$lutfile" != "" ]; then convert $tmpL -scale 256x20! $lutfile fi # set up for -color-matrix or -recolor if [ "$im_version" -lt "06060100" ]; then channelmix="-recolor" else channelmix="-color-matrix" fi # process image convert $tmpA1 $channelmix "\ $rf $gf $bf \ $rf $gf $bf \ $rf $gf $bf \ " \ $tmpL -clut \ -fill $fillcolor -colorize $light% \ $tmpA1 # put alpha channel back if [ "$test2" != "1" ]; then convert $tmpA1 $tmpB1 -alpha off -compose copy_opacity -composite "$outfile" else convert $tmpA1 "$outfile" fi exit 0