Hi, BPC is just "make the output black to match the input black", so if you have only the output profile then there is no way to know what input black is. You miss half of the equation, and without the input profile you cannot know which is the black to map.
But fear not, perceptual intent *does* have an automatic BPC that works without input profile. How? by forcing both, source and destination to have a fake black of zero in the PCS, then the input black is mapped to this fake zero and this fake zero goes mapped to the output profile. So, you can get BPC by just using perceptual intent. Unfortunately perceptual does other gamut mapping adjusts too. Regards Marti Original Message: ----------------- From: Panangat, Vinod vpanan...@vertisinc.com Date: Fri, 19 Aug 2011 13:47:44 -0400 To: lcms-user@lists.sourceforge.net Subject: [Lcms-user] Ouput Profile - Apply BPC Hello The RIP I'm using for color workflow doesn't support Black Point Compensation (BPC). I was wondering if there is a way to apply BPC to an output profile? I saw that ICC has two flavors of sRGB V4 profile on their website one with BPC and the other without. So thinking in those same lines, I was hoping that there might be a way to apply the BPC directly into an output profile. Appreciate any help you can provide. Thanks! ---------------------------------------------------------------- Vinod Panangat | Color Engineer II | Vertis Communications 2010 Westridge Drive | Irving, Texas 75038 T 972.373.4037 | F 972.373.4000 | C 469.387.3705 vpanan...@vertisinc.com | http://www.vertisinc.com -------------------------------------------------------------------- mail2web.com – Enhanced email for the mobile individual based on Microsoft® Exchange - http://link.mail2web.com/Personal/EnhancedEmail ------------------------------------------------------------------------------ uberSVN's rich system and user administration capabilities and model configuration take the hassle out of deploying and managing Subversion and the tools developers use with it. Learn more about uberSVN and get a free download at: http://p.sf.net/sfu/wandisco-dev2dev _______________________________________________ Lcms-user mailing list Lcms-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lcms-user
