#!/bin/bash # # Developed by Fred Weinhaus 8/28/2012 .......... 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: softfocus [-m mix] [-b bluramt1] [-B bluramt2] [-o opacity1] [-O opacity2] [-c coords] [-r radius] infile outfile # USAGE: softfocus [-h or -help] # # OPTIONS: # # -m mix mix percent between compose softlight and compose over # approaches; mix=0 is softlight, mix=100 is over; # 0<=integer<=100; default=50 (equal blend of the two) # -b bluramt1 blur amount when using the compose softlight method; # float>=0;default=4 # -B bluramt2 blur amount when using the compose over method; float>=0; # default is automatically computed from the image size # -o opacity1 opacity amount when using the compose softlight method; # 0<=integer<=100; default=50 # -O opacity2 opacity amount when using the compose over method; # 0<=integer<=100; default=50 # -c coords x,y center coordinates for the no blur region when # using compose over approach; integers>=0; # default=image center # -r radius percent of minimum distance between coords and edges of # image for the no blur center region when method is over; # 0<=integer<=100; default=25 # ### # # NAME: SOFTFOCUS # # PURPOSE: To apply a softfocus effect to an image. # # DESCRIPTION: SOFTFOCUS appliesa softfocus effect to an image. This will be # a blend of two methods. One used -compose softlight and the other uses # -compose over. The latter applies a ramped blur and allows a center region # with no blur. # # OPTIONS: # # -m mix ... MIX is the mix percent between compose softlight and compose over # methods. Mix=0 is -compose softlight and mix=100 is -compose over. Values are # integers between 0 and 100. The default=50 (equal blend of the two methods). # # -b bluramt1 ... BLURAMT1 is the blur amount when using the compose softlight # method. Values are floats>=0. The default=4. # # -B bluramt2 ... BLURAMT2 is the blur amount when using the compose over # method. Values are floats>=0. The default is automatically computed from the # image size. # # -o opacity1 ... OPACITY1 is the opacity amount when using the compose # softlight method. Values are integers between 0 and 100. The default=50. # # -O opacity2 ... OPACITY2 is the opacity amount when using the compose # over method. Values are integers between 0 and 100. The default=50. # # -c coords ... COORDS are the x,y center coordinates for the no blur region # when using the compose over method. Values are integers>=0. The default is # the image center. # # -r radius ... RADIUS is the percent of the minimum distance between the # specified coords and the edges of image. This radius computes the size of # the no blur center region when the method is over. Values are integers # between 0 and 100. The default=25. When no coords are specified the ramped # blur will have an elliptical shape if the image is not square; otherwise, # it will be a circle. It will always be a circle, if coords are specified. # # 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 mix=50 # mixing percent of softlight and over compose methods; 0=softlight 100=over bluramt1=4 # blur amount for softlight method bluramt2="" # blur amount for over method opacity1=50 # opacity for softlight opacity2=50 # opacity for over method coords="" # center coords for no blur region radius=25 # percent of image size for no blur center region for method over # 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 16 ] 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 ;; -m) # get mix shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID MIX SPECIFICATION ---" checkMinus "$1" mix=`expr "$1" : '\([0-9]*\)'` [ "$mix" = "" ] && errMsg "--- MIX=$mix MUST BE A NON-NEGATIVE INTEGER ---" testA=`echo "$mix < 0" | bc` testB=`echo "$mix > 100" | bc` [ $testA -eq 1 -o $testB -eq 1 ] && errMsg "--- MIX=$mix MUST BE AN INTEGER BETWEEN 0 AND 100 ---" ;; -b) # get bluramt1 shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID BLURAMT1 SPECIFICATION ---" checkMinus "$1" bluramt1=`expr "$1" : '\(.[0-9]*\)'` [ "$bluramt1" = "" ] && errMsg "--- BLURAMT1=$bluramt1 MUST BE A NON-NEGATIVE FLOAT ---" ;; -B) # get bluramt2 shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID BLURAMT2 SPECIFICATION ---" checkMinus "$1" bluramt2=`expr "$1" : '\(.[0-9]*\)'` [ "$bluramt2" = "" ] && errMsg "--- BLURAMT2=$bluramt2 MUST BE A NON-NEGATIVE FLOAT ---" ;; -o) # get opacity1 shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID OPACITY1 SPECIFICATION ---" checkMinus "$1" opacity1=`expr "$1" : '\([0-9]*\)'` [ "$opacity1" = "" ] && errMsg "--- OPACITY1=$opacity1 MUST BE A NON-NEGATIVE INTEGER ---" testA=`echo "$opacity1 < 0" | bc` testB=`echo "$opacity1 > 100" | bc` [ $testA -eq 1 -o $testB -eq 1 ] && errMsg "--- OPACITY1=$opacity1 MUST BE AN INTEGER BETWEEN 0 AND 100 ---" ;; -O) # get opacity2 shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID OPACITY2 SPECIFICATION ---" checkMinus "$1" opacity2=`expr "$1" : '\([0-9]*\)'` [ "$opacity2" = "" ] && errMsg "--- OPACITY2=$opacity2 MUST BE A NON-NEGATIVE INTEGER ---" testA=`echo "$opacity2 < 0" | bc` testB=`echo "$opacity2 > 100" | bc` [ $testA -eq 1 -o $testB -eq 1 ] && errMsg "--- OPACITY2=$opacity2 MUST BE AN INTEGER BETWEEN 0 AND 100 ---" ;; -c) # get coords shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID COORDS SPECIFICATION ---" checkMinus "$1" test=`echo "$1" | tr "," " " | wc -w` [ $test -eq 1 -o $test -gt 2 ] && errMsg "--- INCORRECT NUMBER OF COORDINATES SUPPLIED ---" coords="$1," xc=`echo "$coords" | cut -d, -f1` yc=`echo "$coords" | cut -d, -f2` ;; -r) # get radius shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID RADIUS SPECIFICATION ---" checkMinus "$1" radius=`expr "$1" : '\([0-9]*\)'` [ "$radius" = "" ] && errMsg "--- RADIUS=$radius MUST BE A NON-NEGATIVE INTEGER ---" testA=`echo "$radius < 0" | bc` testB=`echo "$radius > 100" | bc` [ $testA -eq 1 -o $testB -eq 1 ] && errMsg "--- RADIUS=$radius 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 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 ---" # get image dimensions ww=`identify -ping -format "%w" $dir/tmpI.mpc` hh=`identify -ping -format "%h" $dir/tmpI.mpc` min=`convert xc: -format "%[fx:min($ww,$hh)]" info:` max=`convert xc: -format "%[fx:max($ww,$hh)]" info:` if [ "$coords" != "" ]; then xc=`echo "$coords" | cut -d, -f 1` yc=`echo "$coords" | cut -d, -f 2` dleft=$xc dright=`convert xc: -format "%[fx:$ww-$xc]" info:` dbottom=`convert xc: -format "%[fx:$hh-$yc]" info:` dtop=$yc dbot=`convert xc: -format "%[fx:$hh-$yc]" info:` min=`convert xc: -format "%[fx:hypot( min($dleft,$dright), min($dtop,$dbottom) )]" info:` min2=`convert xc: -format "%[fx:2*$min]" info:` xoff=`convert xc: -format "%[fx:$xc-$min]" info:` yoff=`convert xc: -format "%[fx:$yc-$min]" info:` fi #echo "xc=$xc; yc=$yc; dleft=$dleft; dright=$dright; dbottom=$dbottom; dtop=$dtop; min=$min; xoff=$xoff; yoff=$yoff;" # set blur amount for over method if [ "$bluramt2" = "" ]; then bluramt2=`convert xc: -format "%[fx:max(1.5,1.5*($max/250))]" info:` fi #echo "bluramt2=$bluramt2" if [ "$radius" != "0" ]; then blackthresh="-black-threshold $radius% -level $radius%,100%" else blackthresh="" fi if [ "$opacity1" != "100" ]; then setopacity1="-alpha set -channel A -evaluate set ${opacity1}% +channel" else setopacity1="" fi if [ "$opacity2" != "100" ]; then setopacity2="-alpha set -channel A -evaluate set ${opacity2}% +channel" else setopacity2="" fi #echo "$setopacity2" if [ "$mix" != "100" ]; then # process softlight method convert $dir/tmpI.mpc \ \( -clone 0 -blur 0x$bluramt1 $setopacity1 \) \ -compose softlight -composite $dir/tmpSL.mpc fi if [ "$mix" != "0" ]; then # make radial gradient for over method if [ "$coords" = "" ]; then convert -size ${min}x${min} radial-gradient: -negate \ -resize ${ww}x${hh}\! $blackthresh \ $dir/tmpG.mpc else convert \( $dir/tmpI.mpc -fill white -colorize 100% \) \ \( -size ${min2}x${min2} radial-gradient: -negate \) \ -gravity northwest -geometry +$xoff+$yoff -compose over -composite $blackthresh \ $dir/tmpG.mpc fi # process over method convert $dir/tmpI.mpc \ \( -clone 0 -blur 0x$bluramt2 $setopacity2 \) \ $dir/tmpG.mpc -compose over -composite $dir/tmpO.mpc fi if [ "$mix" = "0" ]; then convert $dir/tmpSL.mpc "$outfile" elif [ "$mix" = "100" ]; then convert $dir/tmpO.mpc "$outfile" elif [ "$mix" != "100" -a "$mix" != "0" ]; then # mix softlight and over methods convert $dir/tmpSL.mpc $dir/tmpO.mpc -define compose:args=$mix% \ -compose blend -composite "$outfile" fi exit 0