Hi all, as I already commented here
, a group of forum members are developing Perfect RAW
, a RAW developer based on DCRAW for a very precise RAW development enjoying all those features found in DCRAW, and none of those found in regular RAW developers (curves, saturation,...) but that are easily (and usually better) done in Photoshop:
The main coder has already implemented a quick routine for the GUI with image zooming in and out, and mouse drag to move around the image in the split views and works fine. Anyone wanting to try can download: GUI Test
(mouse wheel zooms in and out, and left button drags each half-image. It includes a test JPEG):
Soon we will start with the RAW development stage, and one of the things we will need and still don't know how to do is the conversion from a pair of Temperature/Tint values into the equivalent linear multipliers (R/G/B ratios) needed in DCRAW for white balancing
Coffin provided me some info about this subject introducing the Planck's curve in the CIE cromaticity space. I have not yet investigated deeply but if possible would like to save time by not reinventing the wheel if any of you can help with some ready made formulation to go from Temp/Tint to linear multipliers.
I know UFRAW does this somewhere into its source code and will try to look at it. Any help with UFRAW's code and about the formulation and concepts is very welcome.
The program will be free and we plan to offer the entire source code so it can be translated to any platform or redesigned.