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
