[Openicc] ProPhoto, ICCv4, was: meta data in test chart

[edmund ronald]

Graeme,

 I see no reason why we couldn't have a "Graeme Engine" side by side
with the "Vanilla ICC Engine" managing color for printing in Linux..

 In fact I see good reasons for having it there.

 Might as well have you inside the tent pissing out, and besides some
ICC engine has to sit there by default anyway.

Edmund

> That depends a whole lot on where the profiles came from, and how they were
> created.
> I can easily give you an output profile that perceptual gamut maps from the
> whole
> ProPhoto gamut, or the PRMG gamut, or some smaller gamut. You _will_ notice
> the
> difference.
> [I can well imagine that a "perceptual" profile that doesn't know what
> source
>  gamut it's mapping from, does essentially a colorimetric transform with the
>  clipping edges softened slightly. It's not a true gamut mapping in my book
> though.]
>
> Graeme Gill.
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