#!/bin/bash # # Developed by Fred Weinhaus 2/26/2009 .......... 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: graytoning [-r red] [-g green] [-b blue] [-o offset] [-c contrast] [-t tintcolor] [-m mode] [-a amount] infile outfile # USAGE: graytoning [-h or -help] # # OPTIONS: # # -r red red mix percent; float; default=29.9 # -g green green mix percent; float; default=58.7 # -b blue blue mix percent; float; default=11.4 # -o offset gray brightness percent change; -100<=float<=100; # default=0 # -c contrast gray contrast percent change; -100<=float<=100; # default=0 # -t tintcolor color for tinting; any valid opaque IM color is allowed; # default is no tinting # -m mode mode of tinting: choices are: all, midtones, highlights # and shadows; default=midtones # -a amount amount of tinting; 0<=integer<=100; default=40 # ### # # NAME: GRAYTONING # # PURPOSE: To mix color channels from an image into a grayscale image and # optionally tint it. # # DESCRIPTION: GRAYTONING mixes color channels from an image into a grayscale # image and optionally tints it. Tint modes allow selective tinting of: all, # midtones, hightlights or shadows. # # # OPTIONS: # # -r red ... RED is the red mix percent in forming the grayscale image. # Values are floats. The default=29.9 (equivalent to IM standard grayscale or # Rec609Luma. # # -g green ... GREEN is the red mix percent in forming the grayscale image. # Valuesare floats. The default=58.7 (equivalent to IM standard grayscale or # Rec609Luma. # # -b blue ... BLUE is the red mix percent in forming the grayscale image. # Values are floats. The default=11.4 (equivalent to IM standard grayscale or # Rec609Luma. # # -o offset ... OFFSET is the gray offset or brightness percent change. Values # are -100<=float<=100. The default=0. # # -c contrast ... CONTRAST is the gray contrast percent change. Values are # -100<=float<=100. The default=0. # # -t tintcolor ... TINTCOLOR is the color for tinting the grayscale image. # Any valid opaque IM color is allowed. The default is no tinting. # # -m mode ... MODE is the mode of tinting. Choices are: all (a), midtones (m), # highlights (h) and shadows (s). The default=midtones. # # -a amount ... AMOUNT is the amount of tinting. Values are 0<=integer<=100. # The default=40. # ###### # # set default values 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 offset=0 # gray offset (brightness) percent change; pos or neg float contrast=0 # gray contrast percent change; pos or neg float tintcolor="" # tint color mode="midtones" # tinting mode; all, midtones, shadows, highlights; default=midtones amount="40" # percent amount of tinting; default=40 # 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 15 ] 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 ;; -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 ---" ;; -o) # get offset shift # to get the next parameter # test if parameter starts with minus sign #errorMsg="--- INVALID OFFSET SPECIFICATION ---" #checkMinus "$1" offset=`expr "$1" : '\([-]*[.0-9]*\)'` [ "$offset" = "" ] && errMsg "--- OFFSET=$offset MUST BE A FLOAT ---" testA=`echo "$offset < -100" | bc` testB=`echo "$offset > 100" | bc` [ $testA -eq 1 -o $testB -eq 1 ] && errMsg "--- OFFSET=$offset 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 ---" ;; -t) # get tintcolor shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID TINTCOLOR SPECIFICATION ---" checkMinus "$1" tintcolor="$1" ;; -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 midtones|m) mode="midtones";; shadows|s) mode="shadows";; highlights|h) mode="highlights";; all|a) mode="all";; *) errMsg "--- MODE=$mode IS AN INVALID VALUE ---" esac ;; -a) # get amount shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID AMOUNT SPECIFICATION ---" checkMinus "$1" amount=`expr "$1" : '\([0-9]*\)'` [ "$amount" = "" ] && errMsg "--- AMOUNT=$amount MUST BE AN INTEGER ---" testA=`echo "$amount < 0" | bc` testB=`echo "$amount > 100" | bc` [ $testA -eq 1 -o $testB -eq 1 ] && errMsg "--- AMOUNT=$amount MUST BE AN INTEGER BETWEEN 0 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 infile="$1" outfile="$2" fi # test that infile provided [ "$infile" = "" ] && errMsg "--- NO INPUT FILE SPECIFIED ---" # test that outfile provided [ "$outfile" = "" ] && errMsg "--- NO OUTPUT FILE SPECIFIED ---" # set up temp files tmpA1="$dir/graytoning_A_$$.mpc" tmpA2="$dir/graytoning_A_$$.cache" trap "rm -f $tmpA1 $tmpA2;" 0 trap "rm -f $tmpA1 $tmpA2; exit 1" 1 2 3 15 trap "rm -f $tmpA1 $tmpA2; exit 1" ERR convert -quiet "$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` # 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 "$colorspace" != "sRGB" -a "$colorspace" != "Gray" ]; then errMsg "--- FILE $infile MUST BE RGB or sRGB or Gray---" fi # set up brightness-contrast if [ $offset -eq 0 -a $contrast -eq 0 ]; then bcproc="" else bcproc="-brightness-contrast ${offset},${contrast}" fi # convert to grayscale rf=`convert xc: -format "%[fx:$red/100]" info:` gf=`convert xc: -format "%[fx:$green/100]" info:` bf=`convert xc: -format "%[fx:$blue/100]" info:` convert $tmpA1 -color-matrix "\ $rf $gf $bf \ $rf $gf $bf \ $rf $gf $bf \ " \ $bcproc $tmpA1 # tint as desired if [ "$tintcolor" = "" -o "$amount" = "0" ]; then convert $tmpA1 "$outfile" elif [ "$mode" = "shadows" ]; then convert $tmpA1 \( -clone 0 +level-colors "$tintcolor,white" \) \ -compose blend -define compose:args=$amount -composite \ "$outfile" elif [ "$mode" = "highlights" ]; then convert $tmpA1 \( -clone 0 +level-colors "black,$tintcolor" \) \ -compose over -compose blend -define compose:args=$amount -composite \ "$outfile" elif [ "$mode" = "all" ]; then convert $tmpA1 -fill "$tintcolor" -colorize $amount% \ "$outfile" elif [ "$mode" = "midtones" ]; then convert $tmpA1 -fill "$tintcolor" -tint $amount% \ "$outfile" fi exit 0