#!/bin/bash # # Developed by Fred Weinhaus 1/22/2012 .......... 5/3/2015 # # ------------------------------------------------------------------------------ # # 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: tiltshift [-m mode] [-s size] [-b blur] [-B brightness] [-C contast] # [-S saturation] infile outfile # # USAGE: tiltshift [-help|-h] # # OPTIONS: # # -m mode mode of tiltshift; choices are: vertical (v), # horizontal (h), elliptical (e) and circular (c); # default=vertical # -s size size of central unblurred area; -100<=integer<=100; # default=0 (no change from default amount) # -b blur blur amount for outer area; float>=0; default=5 # -B brightness brightness change of image; -100<=integer<=100; # default=0 (no change) # -C contrast contrast change of image; -100<=integer<=100; # default=0 (no change) # -S saturation saturation change of image; -100<=integer<=100; # default=0 (no change) # ### # # NAME: TILTSHIFT # # PURPOSE: Applies a tiltshift effect to an image. # # DESCRIPTION: TILTSHIFT applies a tiltshift effect to an image. There are # optional modes including: vertical, horizontal, elliptical and circular # # # OPTIONS: # # -m mode ... MODE of the tiltshift effect. The choices are: vertical (v), # horizontal (h), elliptical (e) and circular (c). The default=vertical. # # -s size ... SIZE of the central unblurred area relative to a default amount. # Values are -100<=integer<=100. The default=0. # # -b blur ... BLUR amount for the outer area. Values are floats>=0. The # default=5. # # -B brightness ... BRIGHTNESS change of the image. Values are # -100<=integers<=100. The default=0 (no change). # # -C contrast ... CONTRAST change of the image. Values are -100<=integers<=100. # The default=0 (no change). # # -S saturation ... SATURATION change of the image. Values are # -100<=integers<=100. The default=0 (no change). # # 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 up defaults mode="vertical" # vertical, horizontal, ellipse, circle size=0 # size of unblurred area blur=5 # blur amount bright=0 # brightness change contr=0 # contrast change sat=0 # saturation change # 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 19 ] then errMsg "--- TOO MANY ARGUMENTS WERE PROVIDED ---" else while [ $# -gt 0 ] do # get parameter values case "$1" in -help|-h) # help information echo "" usage2 exit 0 ;; -m) # mode shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID MODE SPECIFICATION ---" checkMinus "$1" mode="$1" mode=`echo "$mode" | tr "[:upper:]" "[:lower:]"` case "$mode" in vertical|v) mode="vertical";; horizontal|h) mode="horizontal";; elliptical|ellipse|e) mode="ellipse";; circular|circle|c) mode="circle";; *) errMsg "--- MODE=$mode IS AN INVALID VALUE ---" esac ;; -s) # get size shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID SIZE SPECIFICATION ---" #checkMinus "$1" size=`expr "$1" : '\([-0-9]*\)'` [ "$size" = "" ] && errMsg "--- SIZE=$size MUST BE AN INTEGER ---" test1=`echo "$size < -100" | bc` test2=`echo "$size > 100" | bc` [ $test1 -eq 1 -o $test2 -eq 1 ] && errMsg "--- SIZE=$size MUST BE AN INTEGER BETWEEN -100 AND 100 ---" ;; -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 ---" ;; -B) # get bright shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID BRIGHTNESS SPECIFICATION ---" #checkMinus "$1" bright=`expr "$1" : '\([-0-9]*\)'` [ "$bright" = "" ] && errMsg "--- BRIGHTNESS=$bright MUST BE AN INTEGER ---" test1=`echo "$bright < -100" | bc` test2=`echo "$bright > 100" | bc` [ $test1 -eq 1 -o $test2 -eq 1 ] && errMsg "--- BRIGHTNESS=$bright MUST BE AN INTEGER BETWEEN -100 AND 100 ---" ;; -C) # get contr shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID CONTRAST SPECIFICATION ---" #checkMinus "$1" contr=`expr "$1" : '\([-0-9]*\)'` [ "$contr" = "" ] && errMsg "--- CONTRAST=$contr MUST BE AN INTEGER ---" test1=`echo "$contr < -100" | bc` test2=`echo "$contr > 100" | bc` [ $test1 -eq 1 -o $test2 -eq 1 ] && errMsg "--- CONTRAST=$contr MUST BE AN INTEGER BETWEEN -100 AND 100 ---" ;; -S) # get sat shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID SATURATION SPECIFICATION ---" #checkMinus "$1" sat=`expr "$1" : '\([-0-9]*\)'` [ "$sat" = "" ] && errMsg "--- SATURATION=$sat MUST BE AN INTEGER ---" test1=`echo "$sat < -100" | bc` test2=`echo "$sat > 100" | bc` [ $test1 -eq 1 -o $test2 -eq 1 ] && errMsg "--- SATURATION=$sat MUST BE AN INTEGER BETWEEN -100 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 [ "$outfile" = "" ] && errMsg "NO OUTPUT FILE SPECIFIED" # setup temp files tmpA1="$dir/tiltshift_1_$$.mpc" tmpB1="$dir/tiltshift_1_$$.cache" tmpA2="$dir/tiltshift_2_$$.mpc" tmpB2="$dir/tiltshift_2_$$.cache" trap "rm -f $tmpA1 $tmpB1 $tmpA2 $tmpB2;" 0 trap "rm -f $tmpA1 $tmpB1 $tmpA2 $tmpB2; exit 1" 1 2 3 15 trap "rm -f $tmpA1 $tmpB1 $tmpA2 $tmpB2; 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 vignette2 # with IM 6.7.4.10, 6.7.6.10, 6.7.9.1 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 [ "$im_version" -gt "06080504" ]; then setcspace="" fi # test input image convert -quiet "$infile" +repage "$tmpA1" || errMsg "--- FILE $infile DOES NOT EXIST OR IS NOT AN ORDINARY FILE, NOT READABLE OR HAS ZERO SIZE ---" # get image dimensions ww=`identify -ping -format "%w" $tmpA1` hh=`identify -ping -format "%h" $tmpA1` dim=`convert xc: -format "%[fx:min($ww,$hh)]" info:` if [ "$mode" = "vertical" ]; then convert -size ${ww}x${hh} gradient: -solarize 50% -level 0x50% -negate $tmpA2 elif [ "$mode" = "horizontal" ]; then convert -size ${hh}x${ww} gradient: -rotate 90 -solarize 50% -level 0x50% -negate $tmpA2 elif [ "$mode" = "ellipse" ]; then convert -size ${dim}x${dim} radial-gradient: -negate -resize ${ww}x${hh}\! $tmpA2 elif [ "$mode" = "circle" ]; then convert -size ${dim}x${dim} radial-gradient: -negate -gravity center -background white -extent ${ww}x${hh}\! $tmpA2 fi # convert brightness and saturate from percent to modulate format bright=`convert xc: -format "%[fx:$bright+100]" info:` sat=`convert xc: -format "%[fx:$sat+100]" info:` # set up contrast to scale to -100 to 100 test=`convert xc: -format "%[fx:abs($contr)<0.0001?0:($contr>0?1:-1)]" info:` contr=`convert xc: -format "%[fx:(2/10)*abs($contr)]" info:` # set up sign for sigmoidal contrast if [ $test -eq 1 -o $test -eq 0 ]; then sign="-" elif [ $test -eq -1 ]; then sign="+" fi #convert size to gammaval #use linear equation ax+b to solve for a and b when: (100-->0.01 and 0-->1) and also (-100-->10 and 0-->1) test=`convert xc: -format "%[fx:$size<1?0:1]" info:` if [ $test -eq 1 ]; then size=`convert xc: -format "%[fx:-0.0099*$size+1]" info:` elif [ $test -eq 0 ]; then size=`convert xc: -format "%[fx:-0.09*$size+1]" info:` fi # create output convert \( $tmpA1 -modulate $bright,$sat,100 ${sign}sigmoidal-contrast ${contr},50% \) \ \( -clone 0 -blur 0x$blur \) \ \( $tmpA2 -gamma $size \) \ $setcspace -compose over -composite "$outfile" exit 0