Hi Aaron,
What do you mean by "applies the ICC profile"? Are you trying to convert the
image to be displayed accurately on a monitor?
If so, wouldn't you want the output type to be RGB and use the monitor's
profile as the output profile?
Perhaps I'm not understanding at all what you're trying to accomplish.
-Noel
From: Aaron Boxer [mailto:boxe...@gmail.com]
Sent: Mon, February 20, 2017 1:04 AM
To: lcms-user@lists.sourceforge.net
Subject: [Lcms-user] Apply profile with PCS = cmsSigXYZData, Color Space =
cmsSigGrayData
Hello,
I have a jpeg 2000 file with an ICC profile.
PCS is cmsSigXYZData and color space is cmsSigGrayData.
The file can be found here:
https://github.com/GrokImageCompression/grok/issues/38
I am working on a library that decodes the jpeg 2000 file and applies the ICC
profile, using LCMS.
Currently, I have this code:
in_type = TYPE_GRAY_8;
out_type = TYPE_RGB_8;
out_prof = cmsCreate_sRGBProfile();
and I can create the transform and apply the ICC profile, but the output is an
RGB file.
What I would like is to output a grayscale file.
So, if I instead call
out_prof = cmsCreateGrayProfile(NULL,NULL);
then cmsCreateTransform returns NULL and I can't apply the profile.
What is the best way of creating a transform for this kind of grayscale image ?
Thanks so much,
Aaron
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