On Wed, 2009-06-17 at 22:36 +0200, Benjamin Lindner wrote:
> Benjamin Lindner wrote:
> > What do you mean by a "16bit" image?
> > According to graphicsmagick doc Q8 means that 8bits are used per color 
> > component. Does this not fit your needs?
> addendum: I see the same behaviour you mention with the to-be-uploaded 
> r2 installer.
> If this is because Q8 cannot handle it, then it should be a Q16 version 
> I guess.

The data I work with (medical images) are frequently grayscale, 16 bit
images (or a single 16 bit channel). I guess that in other scientific
applications, 16 bit images are also used. I'm not sure what the
downside of using the 16 bit version is.

Just a snippet from the README in the download folder of GraphicsMagick:

-x-x-
If the file has "Q8" in the name, then it is compiled to support 24/32
bit pixels. If the file has "Q16" in the name, then it is compiled to
support 48/64 bit pixels. Most users will find that the "Q8" builds to be
sufficient for their needs. They execute faster than the "Q16" builds and
take less memory. Users who are using CMS color profiles, or are
processing scientific/medical images will likely want to use a "Q16"
build. Binaries are built using Microsoft Visual Studio .net
Professional, 2002 edition, (VC++ 7.0).
-x-x-

I guess they agree with my need for 16 bits :-)

Thanks for the support!

Best,
Koen


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