Roberto Michelena schrieb:
I've just checked the ProfileMaker demo version (it does not create profiles, but the GUI seems to be fully functional), and the check box "Correct for Optical Brightener" is grayed out, if the the selected measurement data file is not a spectral one.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?).
Well, PrintOpen has had FWA correction since v.3 I believe, without spectral measurements. I'd believe first a decision is made whether to apply it or not, probably as a function (yes/no) only of white patch or white plus some light patches. Then correction is f(XYZ) or f(Lab).
-- Roberto Michelena Infinitek Lima, Peru