Re: v4 profiles and PRMG
Re: v4 profiles and PRMG
- Subject: Re: v4 profiles and PRMG
- From: Roger Breton <email@hidden>
- Date: Mon, 04 Jun 2007 22:46:19 -0400
> I asked several folks inside X-Rite and they apparently don't want to
> provide an answer. Color Vision replied right away and said no.
So much for ColorVision and X-Rite :(
> What do you folks expect this functionality will provide to us end users?
According to my information, PRMG is proposed as a "replacement PCS" that's
optimized for a certain incoming gamut. They say it's been adjusted,
visually (don't know exactly how they did it -- mostly HP), to best
represent sRGB colors, for example. So, during an ICC conversion, an sRGB
image would not be converted to plain D50-PCS but to this PRMG, a special
case of PCS optimized to handle sRGB conversions. It has to to do with
tweaking the interpretation of the PCS to best handle the incoming gamut,
which, to my understanding is very different than making no assumptions
about incoming colorimetry.
Apparently, the sRGB PRMG work is done. It's a matter of profilers to
release it for their own software? And once this is done, then, work on
AdobeRGB PRMG will start. I don't know how many PRMG they intend to do like
that.
I picked up this information during last fall's Color Imaging Conference in
Scottsdale. But I confess I have not kept abreast of its development.
>> I heard they'll be starting with sRGB PRMG, to be followed by AdobeRGB.
>
> Who?
Jack Holmes from HP and his ICC group.
Best,
Roger Breton | Laval, Canada | email@hidden
http://pages.infinit.net/graxx
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