[argyllcms] Re: gamut mapping and CIECAM
- From: Graeme Gill <graeme@xxxxxxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Thu, 25 May 2006 11:51:20 +1000
Roberto Michelena wrote:
The documentation says intent 0 which uses CIECAM Jab and white point
mapping, is equivalent to standard ICC practice, while intent 7 is the
same but in Lab (which leads to poor blues and reds) ; isn't the
standard ICC one the Lab one?
No. ICC specification of intents is very general. Both these intents
fall within the description of ICC absolute intent, but the former
should have better behaviour for out of gamut colors.
Section 6.2.3 ICC-absolute colorimetric intent
Transformations for this intent shall leave the chromatically adapted
tristimulus
values of the in-gamut colours unchanged.
Graeme Gill.
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