hi, yes, the order matters. the profiles are created for unprocessed input, if you use three instances stacked on top of each other, presumably the top one has input that is more noise free than the profile would expect and thus you may want to tone the effect down a bit by blending.
fwiw if i do multiple instances i would either do some manual denoising via equalizer/nlmeans, or do the profiled denoise wavelet/colour first because it usually affects the look of the image more than the second instance with luma blending. i would usually also only blend the luma one in with 30-70% to leave some graininess. cheers, jo On Thu, Dec 28, 2017 at 10:41 AM, Matthias Bodenbinder <[email protected]> wrote: > Am 27.12.2017 um 19:09 schrieb Roman Lebedev: >> On Wed, Dec 27, 2017 at 9:00 PM, Matthias Bodenbinder >> <[email protected]> wrote: >>> Hi, >>> >>> I know that the modules are applied in a fixed order. So my questions is >>> about several instances of the same module. Specifically profiled denoise. >> Start dt with -d perf -d dev options and see for yourself :) > > Thanks. I will check. > > But my initial question is more from a theoretical point of view. I am just > curious about the algorithm so to speak. Does it make a difference if > denoise profile, wavelet, unifom blend color is applied before or after > denoise profile, wavelet, unifom blend lightness. Does the order matter at > all? > > Matthias > > > > > > > > > > > > > > >> In the exact order you see in the right sidepanel, from bottom to top. >> >>> I have the following scenario: >>> >>> I apply the profiled denoise module 3 times. All three blended "uniformly" >>> but with a differen blend mode: >>> #1: wavelets, blend mode: color, 50% >>> #2: wavelets, blend mode: lightness, 50% >>> #3: non-local-means, blend mode: average, 50% >>> >>> I am now wondering if the order in which these 3 instances are applied >>> makes a difference. >>> >>> Matthias >> Roman. >> >>> ____________________________________________________________________________ >>> darktable user mailing list >>> to unsubscribe send a mail to [email protected] >>> >> ____________________________________________________________________________ >> darktable user mailing list >> to unsubscribe send a mail to [email protected] >> >> > > > ____________________________________________________________________________ > darktable user mailing list > to unsubscribe send a mail to [email protected] > ____________________________________________________________________________ darktable user mailing list to unsubscribe send a mail to [email protected]
