[argyllcms] Re: Create custom screen profile with fake generated color measurements.
- From: Etienne Dechamps <etienne@xxxxxxxxxxxx>
- To: hmhef.z1@xxxxxxxxx
- Date: Thu, 13 Oct 2016 21:04:21 +0100
On 13 October 2016 at 01:05, hmhef <hmhef.z1@xxxxxxxxx> wrote:
I think all my applications use color management properly, i have used
random icc profiles that are supposed to be made for displays similar in
model number, and all applications behaved nicely as far as i can tell.
Careful. ICC profiles can be confusing because they contain two very
distinct types of data: the calibration information, which is typically
applied system-wide by the OS and doesn't depend on the application, and
the actual profile data, which is *not* applied system-wide and needs to be
actively loaded by the application (i.e. the application needs to
explicitly support ICC).
The problem is that only the latter can be used to fix saturation or hue;
the former is only a 3x1DLUT, not a 3DLUT, and therefore can only be used
to fix the white point and gamma.
I suspect that when you say that "applications behaved nicely", what you
actually saw was the *calibration* information being applied - but what you
really want is for the *profiling* information to be used. I suspect that
if you were to generate an ICC profile that is only meant to affect
saturation and doesn't contain any calibration information, you will find
that most of your applications will completely ignore your profile (with a
few exceptions, e.g. Photoshop).
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