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Open Mash Cross Reference
mash/codec/jpeg/mkdiff

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  1 #!/bin/csh -f
  2 set last="__xxx__"
  3 foreach in ( out-*.jpg )
  4         set base=`echo $in | sed -e 's/\.jpg//'`
  5         djpeg -gray -pnm "$base".jpg > "$base".pgm
  6         if ( -f "$last".pgm ) then
  7                 pnmarith -absdiff "$base".pgm "$last".pgm > "$base"-diff.pgm
  8         endif
  9         set last=$base
 10 end
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