New color conversion system

[Cyrille Berger]

> Speaking of Cinepaint: are there ant plans to take its awesome
> Bracketing-To-HDR plug-in and make it part of Krita
> (http://freenet-homepage.de/hsbosny/HDR_Tutorial/HDR_Tutorial-en.html)?
Not plan. Action allready done ;) It's based on [1]. Which means it's a 
step-by-step optimization process and is much slower than what it is on 
cinepaint, which is I think based on a variation of [2] (I might be wrong). 
But I have found the results with [1] to look better than with cinepaint. 
What I am thinking is to use a similar method as in cinepaint to get a first 
estimate of the curve, and then apply the optimization process.

[1] http://www.mpi-inf.mpg.de/resources/hdr/calibration/pfs.html 
[2] http://www.debevec.org/Research/HDR/debevec-siggraph97.pdf
-- 
Cyrille Berger