Some doc if you want : https://www.researchgate.net/publication/224711059_Colour_Filter_Array_Demosaicking_using_Cubic_Spline_Interpolation
Although I'm not sure it is what you are looking for. But the results look good. *Aurélien PIERRE* aurelienpierre.com <http://aurelienpierre.com> ------------------------------------------------------------------------ Le 2017-11-29 à 10:33, Roman Lebedev a écrit : > On Wed, Nov 29, 2017 at 6:19 PM, Robert Bieber <d...@biebersprojects.com> > wrote: >> On 11/29/2017 02:13 AM, Roman Lebedev wrote: >>> and RawSpeed is LGPL2. so that not is even an option. >> Ahh, good point. >>>> 1. Will any of those curve_tools functions in DT do what the cubic_spline >>>> function in dcraw (reproduced below for reference) does? I'm not really >>>> familiar with calculating curves, but I'm a bit worried that it seems >>>> like >>>> they're all geared towards interpolating a single point on a curve, which >>>> I'm assuming would be very slow compared to the approach dcraw takes of >>>> calculating all the points on the curve and then just doing a lookup for >>>> each pixel. >>> Let's not do premature optimizations :) >>> Implement the most dumbest/simplest variant, that is actually readable, >>> then i'll add tests and a benchmark; and *then* a specialized, faster >>> implementation *may* be added. >> >> So I should implement cubic spline from scratch? I'll have a go at it, >> what's the worst that could go wrong? ;) > Well, to put it another way, that dcraw cubic_spline() is just plain hideous. > I don't feel like merging it as-is just so that i will have to > remplement it soon after. > >> Thanks, >> Robby >> >> ___________________________________________________________________________ >> darktable developer mailing list >> to unsubscribe send a mail to darktable-dev+unsubscr...@lists.darktable.org >> > ___________________________________________________________________________ > darktable developer mailing list > to unsubscribe send a mail to darktable-dev+unsubscr...@lists.darktable.org > ___________________________________________________________________________ darktable developer mailing list to unsubscribe send a mail to darktable-dev+unsubscr...@lists.darktable.org
