#!/bin/bash # # Developed by Fred Weinhaus 12/21/2007 .......... 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: pseudocolor [-o offset] [-i increment] [-d delay] [ -r resize] [-v] infile [outfile] # USAGE: pseudocolor [-h or -help] # # OPTIONS: # # -o offset offset of rainbow colors (single frame only); # 0 to 255; default=0 # -i increment incremental shift of rainbow colors per animation frame; # -128 to 128; default=-8 if no outfile provided; # value of -8 for animation creates 33 frames; # default=0 with outfile indicates single frame output # -d delay time delay per animation frame (ms); delay >= 0; default=10 # -r resize image resize percentage; resize > 0; # default=100 (unchanged) # -v indicates to view (display) the animation automatically # outfile if no oufile is provided, a default 33 frame animation will # be generated and viewed (displayed) automatically without # specifying the -v option # ### # # NAME: PSEUDOCOLOR # # PURPOSE: To generate a pseudocolored image or pseudocolored animation from grayscale # image using a rainbow colored transformation. # # DESCRIPTION: PSEUDOCOLOR generates a rainbow colored look up table image and applies # it to a grayscale image to generate either a single frame psuedocolored output # image or a pseudocolored animation. Each frame of the animation uses a different # incremental roll of the rainbow color look up table. For a single frame pseudocolored # output, the rainbow color look up table may be rolled by a user specified amount. # The animation may be viewed (displayed) automatically with or without the saved # animation file. # # # OPTIONS: # # # -o offset ... OFFSET is the pixel roll amount of the rainbow color look up # table to be used for a single frame output image. If an animation is to be # generated by specifying an increment value other than 0, then the offset # will be ignored. Values for offset may be integers between 0 and 255 for # the length 256 look up table. The default=0. # # -i increment ... INCREMENT is the pixel roll amount of the rainbow color # look up table to be used for each new frame of the animation. Increment # values should be integers between -128 and 128. The sign indicates which # direction to roll the look up table. The suggested value of -8 creates a # 33 frame animation. The default=0 indicates that a single frame output image # will be generated. # # -d delay ... DELAY is the time delay in msec between frames in the animation. # Values are integers greater than or equal to zero. The default=10. Note that # the animation will be created to loop forever. Delay is ignored if a single # frame output is to be generated. # # -r resize ... RESIZE allows the output animation to made larger or smaller than # the input image size. The values are integers greater than 0 representing the # resize percentage. The default=100 which leaves the animation the same size as # the input image. # # outfile ... OUTFILE, if provided for an animation, must be in a format such as # gif that supports multiframe animations. # # -v ... Specifies that along with the output animation, the animation is to be # viewed (displayed) automatically before the script is ended. If no output # animation file is provided, the animation will be created and viewed # automatically even if the -v option is not specified. This parameter is # ignored if the output is a single frame image. # # 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 offset=0 # roll offset (for single frame output) incr=0 # roll increment (for animation) delay=10 # time delay for animation resize="" # resize view="no" # automatic view (display) wd=256 # lut width ht=1 # lut height L=255 # lightness value for generating the rainbow S=255 # saturation value for generating the rainbow # 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 9 ] 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 ;; -o) # roll offset shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID OFFSET SPECIFICATION ---" checkMinus "$1" offset="$1" offsettest=`expr "$offset" : '^[0-9][0-9]*$'` offsettestA=`echo "$offset < 0" | bc` offsettestB=`echo "$offset > 255" | bc` [ $offsettest -eq 0 ] && errMsg "--- OFFSET=$offset MUST BE AN INTEGER ---" [ $offsettestA -eq 1 -o $offsettestB -eq 1 ] && errMsg "--- OFFSET=$offset MUST BE GREATER THAN OR EQUAL 0 AND LESS THAN OR EQUAL 255 ---" ;; -i) # roll increment shift # to get the next parameter # test if parameter starts with minus sign #errorMsg="--- INVALID INCREMENT SPECIFICATION ---" #checkMinus "$1" incr="$1" incrtest=`expr "$incr" : '^[0-9\-][0-9]*$'` incrtestA=`echo "$incr < -128" | bc` incrtestB=`echo "$incr > 128" | bc` [ $incrtest -eq 0 ] && errMsg "--- INCREMENT=$incr MUST BE AN INTEGER ---" [ $incrtestA -eq 1 -o $incrtestB -eq 1 ] && errMsg "--- INCREMENT=$incr MUST BE GREATER THAN OR EQUAL -128 AND LESS THAN OR EQUAL 128 ---" ;; -d) # delay shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID DELAY SPECIFICATION ---" checkMinus "$1" delay="$1" delaytest=`expr "$delay" : '^[0-9][0-9]*$'` delaytestA=`echo "$delay < 1" | bc` [ $delaytest -eq 0 ] && errMsg "--- DELAY=$delay MUST BE AN INTEGER ---" [ $delaytestA -eq 1 ] && errMsg "--- DELAY=$delay MUST BE GREATER THAN 0 ---" ;; -r) # resize shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID RESIZE SPECIFICATION ---" checkMinus "$1" resize="$1" resizetest=`expr "$resize" : '^[0-9][0-9]*$'` resizetestA=`echo "$resize < 1" | bc` [ $resizetest -eq 0 ] && errMsg "--- RESIZE=$resize MUST BE AN INTEGER ---" [ $resizetestA -eq 1 ] && errMsg "--- RESIZE=$resize MUST BE GREATER THAN 0 ---" resize="-resize $1%" ;; -v) # view view="yes" ;; -) # 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" # setup temporary images and auto delete upon exit # use mpc/cache to hold input image temporarily in memory tmpA="$dir/coloration_$$.mpc" tmpB="$dir/coloration_$$.cache" tmp0="$dir/coloration_0_$$.png" tmp1="$dir/coloration_1_$$.png" tmp2="$dir/coloration_2_$$.png" tmp3="$dir/coloration_3_$$.png" tmp4="$dir/coloration_4_$$.gif" trap "rm -f $tmpA $tmpB $tmp0 $tmp1 $tmp2 $tmp3 $tmp4;" 0 trap "rm -f $tmpA $tmpB $tmp0 $tmp1 $tmp2 $tmp3 $tmp4; exit 1" 1 2 3 15 trap "rm -f $tmpA $tmpB $tmp0 $tmp1 $tmp2 $tmp3 $tmp4; exit 1" ERR if convert -quiet "$infile" $resize +repage "$tmpA" then : ' do nothing ' else errMsg "--- FILE $infile DOES NOT EXIST OR IS NOT AN ORDINARY FILE, NOT READABLE OR HAS ZERO SIZE ---" fi # 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 pseudocolor. # with IM 6.7.4.10, 6.7.6.10, 6.7.9.0 if [ "$im_version" -lt "06070607" -o "$im_version" -gt "06070707" ]; then setcspace="-set colorspace RGB" else setcspace="" fi if [ "$im_version" -lt "06070606" -o "$im_version" -gt "06070707" ]; then cspace="RGB" else cspace="sRGB" fi # no need for setcspace for grayscale or channels after 6.8.5.4 if [ "$im_version" -gt "06080504" ]; then setcspace="" cspace="sRGB" fi # create hue channel convert -size ${ht}x${wd} gradient: $tmp0 # create saturation channel convert -size ${ht}x${wd} xc:"rgb($S,$S,$S)" $setcspace -channel Green -separate $tmp1 # create lightness channel convert -size ${ht}x${wd} xc:"rgb($L,$L,$L)" $setcspace -channel Blue -separate $tmp2 # combine channels to form rainbow lut convert $tmp0 -colorspace HSB $tmp0 \ -compose CopyRed -composite $tmp1 \ -compose CopyGreen -composite $tmp2 \ -compose CopyBlue -composite -colorspace $cspace \ -rotate 90 $tmp3 # process image 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` if [ $incr -eq 0 -a "$outfile" != "" ] then # single frame output if [ "$im_version" -ge "06030507" ] then convert $tmpA \( $tmp3 -roll -$offset+0 \) -clut "$outfile" else convert $tmpA $tmp3 -fx 'v.p{u*v.w,0}' "$outfile" fi else # animation [ "$outfile" = "" -a $incr -eq 0 ] && incr=8 numframes=`echo "scale=0; (1 + ($wd / $incr)) / 1" | bc` echo "" echo "Please Wait - $numframes Frames Being Created" echo "" if [ "$im_version" -ge "06030507" ] then rotamt=0 convert $tmpA $tmp3 -clut $tmp4 rotamt=`expr $rotamt + $incr` i=1 echo $i while [ $rotamt -le $wd ] do convert $tmpA \( $tmp3 -roll -$rotamt+0 \) -clut miff:- |\ convert -delay $delay $tmp4 -page +0+0 - -page +0+0 $tmp4 rotamt=`expr $rotamt + $incr` i=`expr $i + 1` echo $i done if [ "$outfile" != "" ] then convert $tmp4 -loop 0 $outfile fi if [ "$view" = "yes" -o "$outfile" = "" ] then animate $tmp4 fi else rotamt=0 convert $tmpA $tmp3 -clut $tmp4 rotamt=`expr $rotamt + $incr` i=1 echo $i while [ $rotamt -le $wd ] do convert $tmpA \( $tmp3 -roll -$rotamt+0 \) -fx 'v.p{u*v.w,0}' miff:- |\ convert -delay $delay $tmp4 -page +0+0 - -page +0+0 $tmp4 rotamt=`expr $rotamt + $incr` i=`expr $i + 1` echo $i done if [ "$outfile" != "" ] then convert $tmp4 -loop 0 "$outfile" fi if [ "$view" = "yes" -o "$outfile" = "" ] then animate $tmp4 fi fi fi exit 0