[Poppler-bugs] [Bug 15177] 16-bit images are rendered black

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=15177


Hal Engel <hvengel at astound.net> changed:

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                 CC|                            |hvengel at astound.net




--- Comment #3 from Hal Engel <hvengel at astound.net>  2009-07-26 10:28:39 PST ---
If poppler is going to be used for printing work flows in CUPS filters than
this needs to get fixed.  Many users going color critical work use 16 bit work
flows all the way through to printing and it is not acceptable to have 16 bit
images converted to 8 bit images in the filter before sending it to a 16 bit
device (GutenPrint uses 16bit depths).

I am not sure if the PDF format supports images in other formats such as
32bit/channel or floating point formats.  But popper needs to support all of
these formats without loss.  The format conversion from the objects internal
format (8bit/channel, 16bit/channel, 32 bit/channel, floating point...) to the
output devices format (8bits/channel for monitors, 16bits/channel for
printers...) needs to be handled by the color management engine. 


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