[argyllcms] Re: Can we do something do this?
- From: Graeme Gill <graeme@xxxxxxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Mon, 16 May 2022 17:17:47 +1000
Yves Gauvreau wrote:
Hi,
I most likely didn't do a good job, but I tried to use the PRMG
(RefMediumGamut.gam) to add a
perceptual rendering intent to the ClayRGB1998 profile in the reference
folder. ColorThink doesn't
show any change in the gamut with whatever rendering intent I choose with
this cLutClay profile.
can you describe how ColorThink computes the gamut ?
- for instance, if it computes it from the Perceptual A2B table,
it won't see the gamut assumed by the B2A table.
You can try using ArgyllCMS iccgamut -w -f b -ip to get a view of
the gamut assumed by the B2A table.
(As noted in the documentation for colprof, gamut compression/expansion
is only applied to the B2A tables. See
<
https://www.argyllcms.com/doc/colprof.html#s>
and <
https://www.argyllcms.com/doc/iccgamutmapping.html>
ICCV4 PRMG type behavior is different, and is applied to both A2B and
B2A tables.)
Cheers,
Graeme Gill.
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