[Openicc] color-policy vs. color-infrastructure

[Graeme Gill]

Kai-Uwe Behrmann wrote:

> Could argyll and lcms provide a mechanism to take a profile as an argument ,
> and give back either the gamt tag or the gamt tag added to the former 
> profile?

Yes, that's certainly possible.

> As Marti pointed out on his list gamut tags may be not that reliable for 
> usage. And I have the impression too, especially for older profiles.

Gamut tags are a bit fuzzy at the best of times, and in many profiles
out there they are simply wrong. As a result, they can't generally
be relied upon.

> Thats maybe an information applications can easily provide by intelligent 
> scaling down an small sample image and using the ncl2 tag to store its
> colours (I do in CinePaint). 

A hierarchical image format would certainly make creating such a gamut
a lot faster.

> I am highly interessted in this toppic. As it seems the basis to 
> sucessfully use CIE*Lab as editing and transportation mode for image 
> content.

Determining and transporting gamuts does seem to be part of the puzzle.

Graeme Gill.