[argyllcms] Re: noise and gamut, input profiles with B2A table

Alastair M. Robinson wrote:
Am I right in assuming that tiffgamut doesn't currently do any weighting of the source pixels - that colours that appear frequently aren't treated with any more significance than colours that crop up rarely? 

Yes. But the aim is discover the extent of the gamut, so it
doesn't make much sense to weight anything. [ie. the 1 dimensional
analog of finding a gamut is finding the minimum and maximum of
a set of numbers. Weighting doesn't make sense, there is only
a single minimum and maximum value.]

It would only start to make sense if the gamut wasn't represented
as a surface, but as a 3 dimensional density mapping, and a rather
different gamut mapping algorithm was then used, or some sort
of thresholding was used to establish a gamut surface. At this level
of complexity though, there are many other possibilities to follow,
especially in the spatial gamut mapping direction.
Oh, that reminds me - I see in the latest beta a few of the utilities have been renamed - have you given any more thought to the possibility of resolving the filename clash between Argyll's and LCMS's icclink utilities? 

I've tentatively renamed "profile" to "aglprof", and
"icclink" to "agllink", but I'm not terribly happy with either of them :-(

Graeme Gill.

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