#!/bin/bash # # Developed by Fred Weinhaus 1/20/2008 .......... 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: flickerchannel [-c channellist] [-d delay] [ -r resize] [-m colormodel] [-i] [-l] [-f] infile # USAGE: flickerchannel [-h or -help] # # OPTIONS: # # -c channellist doubled quoted list of channels; 0, 1, 2 (or 3); # any two or three may be specified; # default "0 1 2 3" for CMYK; otherwise "0 1 2" # -d delay time delay per frame (ms); delay >= 0; default=50 # -r resize image resize percentage; resize > 0; # default=100 (unchanged) # -m colormodel desired color space to convert (RGB/sRGB) image; # default is infile colorspace: RGB/sRGB or CMYK # -i includes the full color image in the animation # -l disables the labeling of the images # -f saves the animation to file animation.gif # ### # # NAME: FLICKERCHANNEL # # PURPOSE: To display and optionally save an animation of the channels in # an image. # # DESCRIPTION: FLICKERCHANNEL automatically displays an animation from the # channels of the supplied input image and optionally saves the animation # to a file. At least two channels must be supplied. The main purpose of the # script is to make a visual inspection of two (or more) channels of an image # by alternating the display of each channel. The input image must be sRGB/RGB # or CMYK. It may optionally be converted to any other valid colorspace by the # script before the channels are labeled and displayed. # # # OPTIONS: # # # -c channellist ... CHANNELLIST is a double quoted list of the channels to # be included in the animation. For CMYK, this defaults to "0 1 2 3", but can # be any pair. For RGB or any other colorspace, this defaults to "0 1 2", but # can be any pair. # # -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=50. Note that # the animation will be created to loop forever. # # -r resize ... RESIZE allows the 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. # # -m COLORMODEL is the desired color model in which to present the animation. # Any valid IM colorspace is permitted, but if used, the infile must be in # RGB/sRGB or CMYK colorspace. The default is the input colorspace. # # -i ... Includes the full color infile in the animation. # # -l ... Disables the labeling of the images. # # -f ... Specifies that the animation is to be saved to a file called animation.gif # # 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 clist="" # list of channels (-c) delay=50 # time delay for animation (-d) resize="" # resize (-r) colormodel="" # colormodel desired (-m) fullimage="no" # include full color image (-i) labelflag="yes" # labeling of the images (-l) save="no" # save animation to file animation.gif (-f) # 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" } #function to create animation from specified channels animateChannel() { if [ "$labelflag" = "no" ] then label="" else idn=`echo "$1" | sed -n 's/^.*flickerchannel_\([0-3]\)_.*$/\1/ p'` label="-label $infile--${modelspace}$idn" fi convert $label "$1" $resize miff:- |\ montage - -geometry +0+0 -tile 1x1 -colorspace $cspace $tmpC shift while [ $# -gt 0 ] do if [ "$labelflag" = "no" ] then label="" else idn=`echo "$1" | sed -n 's/^.*flickerchannel_\([0-3]\)_.*$/\1/ p'` label="-label $infile--${modelspace}$idn" fi convert $label "$1" $resize miff:- |\ montage - -geometry +0+0 -tile 1x1 miff:- |\ convert -delay $delay $tmpC -page +0+0 - -page +0+0 -colorspace $cspace $tmpC shift done } # 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 ;; -c) # list of channels shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID CHANNEL LIST SPECIFICATION ---" checkMinus "$1" clist="$1" clisttest=`expr "$clist" : '^[0-9 ][0-9 ]*$'` [ $clisttest -eq 0 ] && errMsg "--- CHANNEL LIST=$clist MUST CONTAIN THE DIGITS 0, 1, 2 or 3 ---" ;; -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%" ;; -m) # colormodel shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INCORRECT COLORMODEL PARAMETER SPECIFICATION ---" checkMinus "$1" colormodel=$1 ;; -i) # include full color image fullimage="yes" ;; -l) # labelflag labelflag="no" ;; -f) # save to file save="yes" ;; -) # STDIN and end of arguments break ;; -*) # any other - argument errMsg "--- UNKNOWN OPTION ---" ;; *) # end of arguments break ;; esac shift # next option done # get infile infile="$1" fi # test that infile provided [ "$infile" = "" ] && errMsg "NO INPUT FILE SPECIFIED" # setup temporary images and auto delete upon exit tmpA="$dir/flickerchannel_$$.mpc" tmpB="$dir/flickerchannel_$$.cache" tmpC="$dir/flickerchannel_C_$$.miff" tmp0="$dir/flickerchannel_0_$$.png" tmp1="$dir/flickerchannel_1_$$.png" tmp2="$dir/flickerchannel_2_$$.png" tmp3="$dir/flickerchannel_3_$$.png" trap "rm -f $tmpA $tmpB $tmpC $tmp0 $tmp1 $tmp2 $tmp3; exit 0" 0 trap "rm -f $tmpA $tmpB $tmpC $tmp0 $tmp1 $tmp2 $tmp3; exit 1" 1 2 3 15 # 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 autolevel. # with IM 6.7.4.10, 6.7.6.10, 6.7.8.6 #if [ "$im_version" -lt "06070606" -o "$im_version" -gt "06070707" ]; then if [ "$im_version" -lt "06070606" -o "$im_version" -gt "06070800" ]; then cspace="RGB" else cspace="sRGB" fi 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 [ "$im_version" -gt "06080504" ]; then setcspace="" cspace="sRGB" fi if convert -quiet "$infile" +repage "$tmpA" then # get colorspace data=`identify -verbose $tmpA` colorspace=`echo "$data" | sed -n 's/^.*Colorspace: \([^ ]*\).*$/\1/p'` echo "colorspace=$colorspace; colormodel=$colormodel" if [ "$colormodel" = "CMYK" ] then modelspace="CMYK" convert $tmpA $setcspace -colorspace CMYK -channel C -separate $tmp0 convert $tmpA $setcspace -colorspace CMYK -channel M -separate $tmp1 convert $tmpA $setcspace -colorspace CMYK -channel Y -separate $tmp2 convert $tmpA $setcspace -colorspace CMYK -channel K -separate $tmp3 tmplist="$tmp0 $tmp1 $tmp2 $tmp3" elif [ "$colorspace" = "CMYK" -a "$colormodel" = "" ] then modelspace="CMYK" convert $tmpA $setcspace -channel C -separate $tmp0 convert $tmpA $setcspace -channel M -separate $tmp1 convert $tmpA $setcspace -channel Y -separate $tmp2 convert $tmpA $setcspace -channel K -separate $tmp3 tmplist="$tmp0 $tmp1 $tmp2 $tmp3" elif [ "$colorspace" = "RGB" -a "$colormodel" = "" ] then modelspace="RGB" convert $tmpA $setcspace -channel R -separate $tmp0 convert $tmpA $setcspace -channel G -separate $tmp1 convert $tmpA $setcspace -channel B -separate $tmp2 tmplist="$tmp0 $tmp1 $tmp2" elif [ "$colorspace" = "RGB" -a "$colormodel" != "" ] then modelspace=$colormodel convert $tmpA $setcspace -colorspace $colormodel -channel R -separate $tmp0 convert $tmpA $setcspace -colorspace $colormodel -channel G -separate $tmp1 convert $tmpA $setcspace -colorspace $colormodel -channel B -separate $tmp2 tmplist="$tmp0 $tmp1 $tmp2" elif [ "$colorspace" = "sRGB" -a "$colormodel" = "" ] then modelspace="sRGB" convert $tmpA $setcspace -channel R -separate $tmp0 convert $tmpA $setcspace -channel G -separate $tmp1 convert $tmpA $setcspace -channel B -separate $tmp2 tmplist="$tmp0 $tmp1 $tmp2" elif [ "$colorspace" = "sRGB" -a "$colormodel" != "" ] then modelspace=$colormodel convert $tmpA $setcspace -colorspace $colormodel -channel R -separate $tmp0 convert $tmpA $setcspace -colorspace $colormodel -channel G -separate $tmp1 convert $tmpA $setcspace -colorspace $colormodel -channel B -separate $tmp2 tmplist="$tmp0 $tmp1 $tmp2" else errMsg "--- COLORSPACE $colorspace IS NOT ALLOWED ---" fi else errMsg "--- FILE $infile DOES NOT EXIST OR IS NOT AN ORDINARY FILE, NOT READABLE OR HAS ZERO SIZE ---" usage exit 1 fi # get list of channels and convert to array [ "$clist" = "" ] && clist=$tmplist cArr=($clist) cnum=${#cArr[*]} if [ "$modelspace" = "CMYK" -a $cnum -gt 4 ] then errMsg "--- TOO MANY CHANNELS SPECIFIED---" elif [ "$modelspace" != "CMYK" -a $cnum -gt 3 ] then errMsg "--- TOO MANY CHANNELS SPECIFIED---" fi [ "$fullimage" = "yes" ] && cArr=(${cArr[*]} $tmpA) cnum=${#cArr[*]} if [ $cnum -lt 2 ] then errMsg "--- TOO FEW CHANNELS SPECIFIED ---" fi i=0 imglist="" while [ $i -lt $cnum ] do id=${cArr[$i]} eval tmpid=\$tmp$id imglist="$imglist $tmpid" i=`expr $i + 1` done # do animation animateChannel $imglist # optional save animation to file if [ "$save" = "yes" ] then convert $tmpC -loop 0 animation.gif fi animate $tmpC exit 0