Hi, I tested the creation and use of a Lab profile with different white points.
I tried transicc by using the default illuminant in the following way: transicc -i*Lab LittleCMS ColorSpace conversion calculator - 4.2 [LittleCMS 2.04] Enter values, 'q' to quit L*? 50 a*? 0 b*? 50 R=135.1773 G=116.7732 B=14.9372 Then I tried transicc by using the D65 illuminant and I got this transicc -i*LabD65 LittleCMS ColorSpace conversion calculator - 4.2 [LittleCMS 2.04] Enter values, 'q' to quit L*? 50 a*? 0 b*? 50 R=135.1773 G=116.7732 B=14.9372 Is this correct? I also tried tificc by translating a 16-bit Lab image to sRGB using this command lines: tificc -i*Lab MyLabImage.tif D50.tif tificc -i*LabD65 MyLabImage.tif D65.tif but comparing D50.tif and D65.tif are identical. (I used a binary-file compare utility) I've done something wrong or there is a bug somewhere? Thanks a lot Andrea ------------------------------------------------------------------------------ Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis & visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter _______________________________________________ Lcms-user mailing list Lcms-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lcms-user
