#!/bin/bash # # Developed by Fred Weinhaus 6/22/2013 .......... revised 4/29/2015 # # ------------------------------------------------------------------------------ # # 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: draganeffect [-b brightness] [-c contrast] [-d darkness ] # [-s saturation] infile outfile # USAGE: draganeffect [-h or -help] # # OPTIONS: # # -b brightness brightness factor; float>=0; default=1 no change # -c contrast contrast; float; nominally -10 to 10; default=0 # -d darkness shadow darkness; float>=1; default=1 # -s saturation saturation; integer>=0; 100 (no change); default=150 # ### # # NAME: DRAGANEFFECT # # PURPOSE: To apply a Dragan-like effect to an image. # # DESCRIPTION: DRAGANEFFECT applies a Dragan-like effect to an image to enhance # wrinkles creating a "gritty" effect. # # # ARGUMENTS: # # -b brightness ... BRIGHTNESS is a brightness factor. Values are floats>=0. # The default=1 or no change. Increase brightness is larger than 1. # Decrease brightness is less than 1. # # -c contrast ... CONTRAST is a sigmoidal contrast. Values are floats nominally # in the range of -10 to 10. Positive values increase contrast and negative # values decrease contrast. The default=0 (no change). # # -d darkness ... DARKNESS is the shadow darkening factor. Values are # floats>=1. The default=1 or no change. Darker shadows is larger than 1. # # -s saturation ... SATURATION. Values are integer>=0. A value of 100 is no # change. The default=150. # # References: # http://andrzejdragan.com/ # http://www.dmimaging.net/photography-trends-dragan-effect/ # http://photoshopfrenzy.com/?p=94 # # REQUIREMENTS: IM 6.6.1.9 due to the use of -morphology DoG # # 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 brightness=1 # float>=0; 1=no change; >1 is brighter; <1 is darker contrast=0 # nominally -10 to 10; 0 is no change darkness=1 # 1 is nominal; float>=1; darkens shadows saturation=150 # 100 is no change radius=5 # fixed value; does not change result significantly # 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 10 ] 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 ;; -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 VALUE (with no sign) ---" ;; -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 VALUE ---" ;; -d) # get darkness shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID DARKNESS SPECIFICATION ---" checkMinus "$1" darkness=`expr "$1" : '\([.0-9]*\)'` [ "$darkness" = "" ] && errMsg "--- DARKNESS=$darkness MUST BE A NON-NEGATIVE FLOAT VALUE (with no sign) ---" test1=`echo "$darkness < 1" | bc` [ $test1 -eq 1 ] && errMsg "--- DARKNESS=$darkness MUST BE A FLOAT GREATER THAN OR EQUAL TO 1 ---" ;; -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 VALUE (with no sign) ---" ;; -) # 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 [ "$outfile" = "" ] && errMsg "NO OUTPUT FILE SPECIFIED" # setup temporary images tmpA1="$dir/draganeffect_1_$$.mpc" tmpB1="$dir/draganeffect_1_$$.cache" trap "rm -f $tmpA1 $tmpB1;" 0 trap "rm -f $tmpA1 $tmpB1; exit 1" 1 2 3 15 trap "rm -f $tmpA1 $tmpB1; exit 1" ERR # read the input image into the temporary cached image and test if valid convert -quiet "$infile" +repage "$tmpA1" || errMsg "--- 1 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` # set up darkness darkness=`convert xc: -format "%[fx:3/$darkness]" info:` # set up brightness if [ "$brightness" = "1" ]; then brightening="" else brightening="-evaluate multiply $brightness" fi # set up contrast if [ "$contrast" = "0" ]; then contrasting="" else test1=`convert xc: -format "%[fx:sign($contrast)]" info:` abscontrast=`convert xc: -format "%[fx:abs($contrast)]" info:` if [ $test1 -eq 1 ]; then contrasting="-sigmoidal-contrast ${abscontrast}x50%" else contrasting="+sigmoidal-contrast ${abscontrast}x50%" fi fi # set up darkness if [ "$darkness" = "1" ]; then darkening="" else # -clamp needed for HDRI darkening="-evaluate multiply $darkness -clamp" fi # set up for biasing if [ "$im_version" -ge "07000000" ]; then biasing="-define convolve:bias=50%" else biasing="-bias 50%" fi # process image # first line: read image, enhance brightness, sigmoidal-contrast and saturation # second line: clone, desaturate, darken and compose multiply with input # third line: clone previous result and apply high pass filter using DoG # fourth line: clone both use overlay composite to apply high pass filter to enhanced input # fifth line: clone enhanced input and desaturate, delete temps # sixth line: use hardlight composite to apply desaturated image to enhanced image and save output convert $tmpA1 $brightening $contrasting -modulate 100,$saturation,100 \ \( -clone 0 -modulate 100,0,100 $darkening \) -compose multiply -composite -clamp \ \( -clone 0 $biasing -define convolve:scale=1 -morphology Convolve DoG:0,0,$radius -clamp \) \ \( -clone 0 -clone 1 -compose overlay -composite \) \ \( -clone 0 -modulate 100,0,100 \) -delete 0,1 \ -compose hardlight -composite "$outfile" exit 0