On Wed, Nov 19, 2014 at 7:31 PM, Elle Stone <ellestone@xxxxxxxxxxxxxxxxxxxx> wrote a lot of text that has been trimmed away... I am only going to reply to the issues you seem to have with color image processing algorithms operating in CIE Lab. My general stance is that if at all possible, algorithms should operate on linear RGB data. Some algorithms do however not work well on linear data and expect more of a perceptually uniform color space to give satisfying results. Many of the ops fitting this categorization - both in GIMP and GEGL have been using sRGB; even if academic papers introducing/describing the algorithms specifies that processing is to be done in CIE Lab. Such operations might be using division, multiplication, power functions and other chromaticity dependent arithmetic building blocks. It is for these type of operations using CIE Lab should be evaluated rather than UserRGB – just like CIE Lab can be considered for new color image processing ops that rely on more perceptual uniformity than linear RGBs provide. /pippin _______________________________________________ gimp-developer-list mailing list List address: gimp-developer-list@xxxxxxxxx List membership: https://mail.gnome.org/mailman/listinfo/gimp-developer-list List archives: https://mail.gnome.org/archives/gimp-developer-list
