On 07/12/2012 02:40 PM, Claudio Wilmanns wrote: >> You know the whitepoints of your source space and your target space: >> they're in the colour profiles. Create a matrix that is the inverse >> of the transform from source to target whitepoint and apply it to your >> source image. Then do your relative output transform. The transform >> you just did is the inverse of the whitepoint transform that relative >> colorimetic rendering does: it'll cancel. If you have tools to create >> colour profiles, you can create a profile that does exactly this >> transform, and LCMS would then do exactly what you want. >> >> But if this is all like Greek to you I'm afraid I can't help. And I >> cannot vouch for the quality of the results of any such procedure -- it >> would lose some accuracy, for sure. And it'll be inconvenient. > > No, that’s not Greek to me at all ;-) All I wanted to know is if what I > was thinking of it is the same as what you thought of. > > Basically you are suggesting to recover the absolute colorimetric data > from the relative colorimetric data in the profile and create a new > „absolute“ colorimetric profile, even though LCMS (or KCMS) uses the > relative coloriemtric rendering intent, right? Or in one word, to build a > special softproofing-profile.
That's right. Evil, but I think it'll work. Andrew.
