[Lcms-user] First steps and some questions

[Andreas R. <a.r...@gm...>]

Hello,

I'm trying to make my first steps with LCMS and build a very simple application to get familiar with everything.
All I want to do is transform a RGB-Jpeg from a special input profile to sRGB and produce the same results I get when I do exactly the same in Photoshop.

I'm using that image for testing with its embedded ICC profile as Input profile:

http://www.colormanagement.org/download_files/basICColor_CM-Ampel.jpg

Then I do a simple transformation from ampel.icc -> sRGB.icc, with different intents.
The results are always a little different from what I can produce in Photoshop (using the same profiles and the same intent).

The traffic light is green after the transformation, which shows me that it roughly works - but I expect to get exactly the same result.

The same happens in Gimp - it's always a little different from what I get through lcms (I saved the results to a file and checked RGB-Values).
Especially these grids at the borders have very different colors.

Sourcecode is more or less from the examples, nothing special. Profiles are the exactly the same in lcms and Photoshop.

Regards
Andreas