composite bug; random lines in image
Posted: 2015-10-30T00:45:22-07:00
I found a bug!
http://imgur.com/K9AifJL
The image consists of a white left half, followed by a right black half, with a few random white/black vertical lines in each. Such a pattern should be impossible when it's supposed to be a solid colour.
Code: Select all
convert -size 400x400 canvas:white ( +clone -evaluate set 32768 ) ( +clone -evaluate set 16384 ) -delete 0 -append stacked.png
convert stacked.png -crop100%x50% -depth 16 ( -clone 0 -evaluate multiply 2 ) ( -clone 1 -evaluate multiply 256 ) -delete 0-1 -compose Add -composite -define png:bit-depth=16 test1.pngThe image consists of a white left half, followed by a right black half, with a few random white/black vertical lines in each. Such a pattern should be impossible when it's supposed to be a solid colour.
Code: Select all
convert -version
Version: ImageMagick 6.9.2-4 Q16 x64 2015-10-10 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2015 ImageMagick Studio LLC
License: http://www.imagemagick.org/script/license.php
Visual C++: 180031101
Features: Cipher DPC Modules OpenMP
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