On Fri, 13 Jun 2008, Mitesh wrote:
> Till now color managment had been ignored. Our customers have asked for
> color management support. We have chosen our Tiff plugin to support color
> management for proof of concept for the customers. For Tiff we use the
> "libtiff" library. Later on we plan to support color management to other
> possible formats like jpeg, png, pdf etc. in which color management info can
> be embedded.

Probably you were not aware of hidden TIFF challenges. :-)

For a more "pure" format as pertains to alpha and gamma with ICC 
profile support, you should look at PNG.  TIFF is still the workhorse 
for many industries since it is fast and flexible.

> I am a newbie in color management with 3-4 days of reseach work in color
> management. Right now our Tiff plugin will do the transformation for tiff
> files using any suitable CMM. We will later on integrate the CMM centrally
> to handle other formats like jpeg, png, pdf etc. According to you,
> GraphicsMagick will handle Tiff. That is fine (more than fine :-) ). Does it
> handle other formats like jpeg, png, pdfs too? We need support for alpha
> channels, 16 bit per channel support (64 bits for RGBA)

Yes, it support a vast collection of file formats at 8, 16, or 32 bits 
per channel (set at compile time).  CMYK(A) is supported.  There is an 
interface to invoke lcms, but it is not as fast as I would prefer 
(considerable optimization is possible).  Maybe it was fast enough 
when it was first implemented but lcms is much faster now than it was 
then.

Bob
======================================
Bob Friesenhahn
[EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/


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