#!/bin/bash # # Developed by Fred Weinhaus 12/11/2012 .......... revised 10/9/2014 # # ------------------------------------------------------------------------------ # # 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: accentedges [-w width] [-s strength] [-p polarity] [-b blur] # [-c cmethod] infile outfile # # USAGE: accentedges [-help] # # OPTIONS: # # -w width width of edges; integer>0; default=1 # -s strength strenght of edges; integer>=0; default=20 # -p polarity polarity of edges; choices are: white or black; # default=black # -b blur blurring (smoothing) of edges; float>=0; default=0.5 # -c cmethod compose method for blending edges with image; choices # are: over or overlay; default=over # ### # # NAME: ACCENTEDGES # # PURPOSE: To apply accented edges to an image. # # DESCRIPTION: ACCENTEDGES applies accented edges to an image. The edges may # be either black or white. The compose method may be either over or overlay # for slightly different effects. This script attempts to duplicate some of the # features of Photoshop's Accented Edges. # # OPTIONS: # # -w width ... WIDTH of the edges. Values are integers>0. The default=1. # # -s strength ... STRENGTH of the edges. Values are integers>=0. The default=20. # # -p polarity ... POLARITY of the edges. The choices are: white or black. The # default=black. # # -b blur ... BLUR is the blurring (smoothing) of the edges. Values are # floats>=0. The default=0.5. # # -c cmethod ... CMETHOD is the compose method for blending the edges with # the image. The choices are: over or overlay. The default=over. # # REQUIREMENTS: IM 6.5.9.3 is required due to the use of -morphology edgeout. # # 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 width=1 # edge width strength=20 # edge strength polarity="black" # edge polarity blur=0.5 # edge blur cmethod="over" # compose method: over or overlay # 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 -h|-help) # help information echo "" usage2 exit 0 ;; -w) # get width shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID WIDTH SPECIFICATION ---" checkMinus "$1" width=`expr "$1" : '\([0-9]*\)'` [ "$width" = "" ] && errMsg "--- WIDTH=$width MUST BE A NON-NEGATIVE INTEGER ---" test=`echo "$width < 1" | bc` [ $test -eq 1 ] && errMsg "--- WIDTH=$percent MUST BE A POSITIVE INTEGER ---" ;; -s) # get strength shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID STRENGTH SPECIFICATION ---" checkMinus "$1" strength=`expr "$1" : '\([0-9]*\)'` [ "$strength" = "" ] && errMsg "--- WIDTH=$strength MUST BE A NON-NEGATIVE INTEGER ---" ;; -p) # polarity shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID POLARITY SPECIFICATION ---" checkMinus "$1" # test gravity values polarity="$1" polarity=`echo "$1" | tr '[A-Z]' '[a-z]'` case "$polarity" in black) ;; white) ;; *) errMsg "--- POLARITY=$polarity IS AN INVALID VALUE ---" esac ;; -b) # get blur shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID BLUR SPECIFICATION ---" checkMinus "$1" blur=`expr "$1" : '\([.0-9]*\)'` [ "$blur" = "" ] && errMsg "--- BLUR=$blur MUST BE A NON-NEGATIVE FLOAT ---" ;; -c) # cmethod shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID CMETHOD SPECIFICATION ---" checkMinus "$1" # test gravity values cmethod="$1" cmethod=`echo "$1" | tr '[A-Z]' '[a-z]'` case "$cmethod" in over) ;; overlay) ;; *) errMsg "--- CMETHOD=$cmethod 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 [ "$outfile" = "" ] && errMsg "NO OUTPUT FILE SPECIFIED" # set up temp files tmpA1="$dir/accentedges_A_$$.mpc" tmpA2="$dir/accentedges_A_$$.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 # 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 accentedges. # with IM 6.7.4.10, 6.7.6.10, 6.8.0.8 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 [ "$im_version" -gt "06080504" ]; then setcspace="" fi # read input image convert -quiet "$infile" $setcspace +repage $tmpA1 || echo "--- FILE $infile DOES NOT EXIST OR IS NOT AN ORDINARY FILE, NOT READABLE OR HAS ZERO SIZE ---" # divide strength by 10 strength=`convert xc: -format "%[fx:$strength/10]" info:` # set up blur if [ "$blur" = "0" ]; then blurring="" else blurring="-blur 0x$blur" fi convert $tmpA1 \ \( -clone 0 -fill $polarity -colorize 100 \) \ \( -clone 0 $setcspace -colorspace gray \ -morphology edgeout diamond:$width $blurring -evaluate multiply $strength \) \ -compose $cmethod -composite "$outfile" exit 0