[Lcms-user] color question

[Benjamin A. <ben...@gm...>]

Hello!

I'm having problems applying multiple color profiles to image data. Applying
the profiles works easily both using the dll and tifficc, but i don't get
any usable results.

The goal is to use the Kodak DCS SDK to convert Kodak's raw .dcr files to
tiff files, with the colors matching those of Kodak's own PhotoDesk
application.

I'm getting color data in the so called ERIMM-ColorSpace and the SDK
Documentation tells me to apply color-profiles like
http://politbuero.dyndns.org/colorprocessing.jpg

This is a list of supplied icc profiles:

					colorSpace	interChange
class
DCSProductLook.icm		RGB		LAB		input

DCSProSLRnToneCurve.icm		LAB		LAB		abstract

DCSRGB.icm				RGB		XYZ
display
KODAK_sRGB.icm			RGB		LAB		display
sRGB Color Space Profile.icm	RGB		XYZ		display

ERIMM_PCS3.icm			RGB		XYZ/PCS3	colorSpace
lab8_mft2.icm			LAB		LAB		colorSpace

This is how I apply the profiles:

tifficc -w -i icc\ERIMM_PCS3.icm -o icc\KODAK_sRGB.icm erimm.tif rgb.tif

tifficc -w -i icc\DCSProductLook.icm -o icc\lab8_mft2.icm rgb.tif lab.tif

tifficc -w -i icc\DCSProSLRnToneCurve.icm -o icc\lab8_mft2.icm lab.tif
lab2.tif

tifficc -w -i icc\lab8_mft2.icm -o icc\KODAK_sRGB.icm lab2.tif out.tif

For some reason, I'm only getting the standard didn't-work-very-dark images.
rgb.tif is the closest match, but stil faaar too dark. Could you please give
me a hint on how (and in which order) to apply the profiles to go from the
ERIMM-colorSpace to a plain sRGB colorSpace using both the look profile and
the SLRn Tone Curve profile?

thanks for your help!
Ben Adler