Error in indexed PNG output if number of colors <= 16
Posted: 2008-08-20T13:12:56-07:00
Conversion to an indexed PNG is erroneous if the number of colors in the input image is 1, 2, or 5 to 16, no matter if the input is indexed or not.
Example input
Output
Output
Output
Output
Another example with a random image:
Input
, output 
This seems to be the same issue as for croco.png in this thread, but I opened a new thread because there was already confusion about 2 issues in 1 thread.
Example input
Code: Select all
~ $ convert in.png png8:out.png
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~ $ convert -type palette in.png png8:out2.png
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~ $ convert out2.png png8:out3.png
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~ $ convert out3.png png8:out4.png
Another example with a random image:
Input
, output This seems to be the same issue as for croco.png in this thread, but I opened a new thread because there was already confusion about 2 issues in 1 thread.
Code: Select all
~ $ convert -version
Version: ImageMagick 6.4.3 2008-08-20 Q16 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2008 ImageMagick Studio LLC