#!/bin/bash # # Developed by Fred Weinhaus 10/31/2015 .......... revised 10/31/2015 # # ------------------------------------------------------------------------------ # # 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: sketcher [-g gain] [-m method] [-s saturation] [-h hue] [-t thicken] # infile outfile # USAGE: sketcher [-help] # # OPTIONS: # # -g gain edge gain (i.e. strength); float>=0; default=5 # -m method sketch method; choices are: grayscale, color, screen, # softlight, pegtoplight, hardlight, linearlight, and # vividlight; default=grayscale # -s saturation color saturation; integer>=0; default=100 (no change). # -h hue color hue; integer>=0; default=100 (no change). # -t thicken thickening of edges; integer>=0; default=0 # ### # # NAME: SKETCHER # # PURPOSE: To apply a sketch-like effect to an image. # # DESCRIPTION: EDGEFX applies a variety of sketch-like effects to an image. # # OPTIONS: # # -g gain ... GAIN is the edge gain (i.e. strength or intensity). # Values are floats>=0. The default=5. # # -m method ... METHOD of sketch. The choices are: grayscale, color, screen, # softlight, pegtoplight, hardlight, linearlight, and vividlight. The default # is grayscale. # # -s saturation ... color SATURATION. Values are integers>=0. The default=100 # (no change). 0 is grayscale and 200 is twice the saturation # # -h hue ... color HUE. Values are integers>=0. The default=100 (no change). # 0 is negative 180 degree rotation (toward blue). 200 is positive 180 degree # rotation (toward green). # # -t thicken ... THICKEN amount for edges. Values are integers>=0. The # default=0 (no thickening). # # REQUIREMENTS: IM 6.6.2.2 due to the use of rotated kernels in -morphology # convolve. # # 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=5 # edge gain type="grayscale" # sketch type saturation=100 # color saturation hue=100 # color hue thicken=0 # thickening of edges # 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 12 ] 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 ;; -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 ---" ;; -m) # get method shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID METHOD SPECIFICATION ---" checkMinus "$1" method=`echo "$1" | tr '[A-Z]' '[a-z]'` case "$method" in hardlight) ;; softlight) ;; pegtoplight) ;; linearlight) ;; vividlight) ;; screen) ;; grayscale) ;; color) ;; *) errMsg "--- METHOD=$method IS AN INVALID VALUE ---" ;; esac ;; -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 ---" ;; -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 INTEGER ---" ;; -t) # get thicken shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID THICKEN SPECIFICATION ---" checkMinus "$1" thicken=`expr "$1" : '\([0-9]*\)'` [ "$thicken" = "" ] && errMsg "--- THICKEN=$thicken MUST BE A NON-NEGATIVE INTEGER ---" ;; -) # 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 [ "$outfile" = "" ] && errMsg "NO OUTPUT FILE SPECIFIED" # set directory for temporary files tmpdir="$dir" dir="$tmpdir/SOFTFOCUS.$$" 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 $dir; exit 1" ERR # read input image into temporary memory mapped (mpc) format image convert -quiet "$infile" +repage $dir/tmpI.mpc || echo "--- FILE $thefile DOES NOT EXIST OR IS NOT AN ORDINARY FILE, NOT READABLE OR HAS ZERO SIZE ---" # set up for swap if [ "$method" = "softlight" -o "$method" = "pegtoplight" ]; then swapping="+swap" else swapping="" fi # set up for grayscale if [ "$method" = "grayscale" ]; then graying="-colorspace gray" else graying="" fi # set up for composite if [ "$method" = "grayscale" -o "$method" = "color" ]; then composing="" deleting="-delete 0" else composing="-compose $method -composite" deleting="" fi # set up for saturation if [ "$saturation" != "100" -o "$hue" != "100" ]; then modulating="-modulate 100,$saturation,$hue" else modulating="" fi # set up for thickening if [ "$thicken" != "0" ]; then thickening="-morphology dilate octagon:$thicken" else thickening="" fi #echo "swapping=$swapping; graying=$graying; composing=$composing; deleting=$deleting; modulating=$modulating; thicken=$thicken;" # process image convert $dir/tmpI.mpc $graying \ \( -clone 0 -define convolve:scale='!' \ -define morphology:compose=Lighten \ -morphology Convolve 'Sobel:>' \ $thickening \ -negate -evaluate pow $gain \) \ $swapping $composing $deleting \ $modulating \ "$outfile" exit 0