[Poppler-bugs] [Bug 14526] Poppler incorrectly renders CMYK colors

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=14526





--- Comment #4 from James Cloos <cloos at jhcloos.com>  2008-02-17 13:58:50 PST ---
If you browse to:

http://cvs.ghostscript.com/cgi-bin/viewcvs.cgi/ghostscript/trunk/gs/Resource/ColorSpace/

you can look at the default colorspace transforms used by current GhostScript.

In specific, look at
http://cvs.ghostscript.com/cgi-bin/viewcvs.cgi/ghostscript/trunk/gs/Resource/ColorSpace/DefaultCMYK
where you see the matrix used to emulate what Adobe Reader does.

Especially look at the comments to checkin 5401 (from 2004/October), where they
mention that the intent is to show what the colours will look like when
printed.


Clearly xpdf tries to emulate the look of acrobat reader, hense the colour
space conversion in GfxState.cc.

Poppler probably should support both conversions, preferably with a generic
colour space matrix just like GhostScript and other RIPs do.


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