[argyllcms] Re: FWA correction in XYZ space

Gerhard Fuernkranz wrote: 
Do you have any idea, how one could determine an "optimal"
small subset of my measurements for the regression (without
need to try e.g. 10^1700 combinations)?


Couldn't you do a delta analyis ? See which samples have
the least effect on the resulting parameters, and discard those.

It also tends to validate Gretag's approach, which (I have
been given the impression) is a XYZ_fwa_comp = f(XYZ) /
Lab_fwa_comp = f(Lab) type of approach.


I don't know for sure, but I think Gretag's FWA compensation
is also only available in conjunction with *spectral*
measurements, is it? This would IMO suggest that they
rather use an approach like yours (or even use your
method?).


Yes you are right, it does only work with spectral. I'm
not sure what algorithm they currently use, as they had this
feature prior to the publication of my algorithm (although
not prior to my releasing it in Argyll).

Graeme Gill.

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