Hello, this is somewhat outdated… I did look at the two profiles that where posted to the list, and I was wondering if the whitepoint (wptp) is not wrong. It is set to D50, but Rec 709 specifies D6 - or?
On 08.01.2013, at 16:42, Florian Höch <lists+lcms-u...@hoech.org> wrote: > Am 08.01.2013 10:05, schrieb Richard Hughes: >> On 7 January 2013 17:57, Marti Maria <marti.ma...@littlecms.com> wrote: >>> But anyway, I think there is a clean way to do what you wish, and this needs >>> only a few math. >>> It seems to me the issue comes because parametric 5 is in the form >>> (a*x)^g >>> See below the parameters disposition >> >> Unless I'm mistaken (and that's entirely plausible) we want the TRC to >> be the inverse of the Rec. 709 curve, rather than the power curve of >> that type. I've attached the ICC profile generated from your type 5 >> parametric curve which to me seems the "wrong way around". > > Agreed, the curves from the attached profile look very steep. The curves > from the profile attached to your earlier message look alright to me > (and closer inspection confirms that they indeed follow the Rec. 709 > transfer function). > > -- > Florian > > ------------------------------------------------------------------------------ > Master SQL Server Development, Administration, T-SQL, SSAS, SSIS, SSRS > and more. Get SQL Server skills now (including 2012) with LearnDevNow - > 200+ hours of step-by-step video tutorials by Microsoft MVPs and experts. > SALE $99.99 this month only - learn more at: > http://p.sf.net/sfu/learnmore_122512 > _______________________________________________ > Lcms-user mailing list > Lcms-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/lcms-user ------------------------------------------------------------------------------ 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
