[UFRaw-Devel] WB before color profiles?

[Stephane C. <ste...@ch...>]

Hello, 

I am trying to understand how WB and color profiles are applied in dcraw and I am a bit puzzled by what I see. 

I am not familiar with color profiles but I was under the impression that their purpose was to transform the R, G and B channels of the CCD Bayer pattern to a known color space. 

What I find strange in dcraw is the fact that the WB is applied before the camera color profile.

The way I understand it is that the color of an object is first transformed by the ambiant light and then by the CCD. 
So if you want to recompute the object color from the CCD data, you have to do it the other way around:
First by 'inverting' the effect of the CCD (that would be the ICC profile) and then by applying the WB. 

Does that make sense to you?

Stephane.