[Openicc] [ANNOUNCE] Compicc 0.8.3

Kai-Uwe Behrmann ku.b at gmx.de
Tue Nov 30 03:22:37 PST 2010

Am 29.11.10, 17:26 +0100 schrieb Kai-Uwe Behrmann:
> Am 29.11.10, 13:20 -0000 schrieb Richard Hughes:
>> On 25 November 2010 15:12, Kai-Uwe Behrmann <ku.b at gmx.de> wrote:
>>> The project brings you instant desktop colour correction on GPU through 
>>> the
>>> compiz window manager. It supports multi monitors and live connecting. The
>>> implicite colour conversion appears on the fly.
>> One thing that confuses me is how you should be dealing with VCGT
>> data. For profiles that have VCGT data, do you create a tonecurve for
>> each channel to remove the VCGT effect before you apply the GPU
>> transform or just push the VCGT data to the video card like normal?
> Merging of VCGT with the transform was thought of a feature. But I changed my 
> mind about that regarding the colour server.
> Its better to teach users not to omit VCGT in monitor device profiles for 
> colour servers. On the other side, people who really want a calibration, for

Sorry, Correction:
Its better to teach users to omit VCGT in monitor device profiles for
colour servers.

> whatever reason, have still the possibility to use VCGT.
>> I must admit, I'm not completely sure of the role of VCGT in a
>> late-bound color workflow.
> In my personal view they are rather obsolete. Lookup tables are precise 
> enough in CompICC. Running a cheap Apple laptop monitor with osX with VCGT 
> and Linux without, I never missed VCGT. On better hardware its even lesser 
> needed.
>> Richard.
> kind regards
> Kai-Uwe Behrmann
> -- 
> developing for colour management www.behrmann.name + www.oyranos.org
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