Hallöchen! Pascal Obry writes:
> [...] > > This book talks about the way Photoshop and Lr works > internally. The books says that Lr is working on a profile close > to ProPhoto RGB (named Melissa RGB) ICC model and I was trying to > understand how dt match. If I understand Google hits to "Melissa RGB" correctly, Lr uses that only for the RGB colour picker and the histogram. Internally, it uses a linearised ProPhoto RGB (which happens to have the same primaries as Melissa RGB). I'm suprised actually -- would have thought that Lr also uses Lab. Also, the choice of such a wide-wide gamut RGB suggests that Lr uses 16 bit non-negative integers, which means that Lr is colour blind in some areas. But the Google hits are from 2008. Moreover, some web pages seem to mix-up "colour space used for image processing" and "colour space used for the histogram". Tschö, Torsten. -- Torsten Bronger Jabber ID: [email protected] or http://bronger-jmp.appspot.com ------------------------------------------------------------------------------ Get 100% visibility into Java/.NET code with AppDynamics Lite! It's a free troubleshooting tool designed for production. Get down to code-level detail for bottlenecks, with <2% overhead. Download for free and get started troubleshooting in minutes. http://pubads.g.doubleclick.net/gampad/clk?id=48897031&iu=/4140/ostg.clktrk _______________________________________________ darktable-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/darktable-devel
