Re: Change PCS of CLUT input profile
Re: Change PCS of CLUT input profile
- Subject: Re: Change PCS of CLUT input profile
- From: Steve Upton <email@hidden>
- Date: Wed, 10 Oct 2007 22:03:17 -0700
At 6:49 PM +0200 10/10/07, Mark wrote:
>Hi all,
>
>I have some input CLUT profiles that use LAB as PCS. Do you know any utility that will convert that to XYZ PCS?
Hi Mark,
I'm in agreement with Graeme, you should look at the straight conversion from your source RGB to the destination RGB space. In the ICC world that's a device link profile (you can read more in the ICC spec but you may find better information Googling).
If you calculate a device link then the PCS space is used as a reference but disappears in the result. Then your job is to take the role of the CMM and move it into the graphics card. The nice thing is that the heavy lifting will be taken care of and you'll really just be writing an very efficient interpolator.
It sounds like a reasonable project. I've heard of CMM-style calculations being moved to the card before so it seems possible.
Regards,
Steve
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o Steve Upton CHROMiX www.chromix.com
o (hueman) 866.CHROMiX
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