Hi Andreas This is currently paused. I may come back to this in some time ;-) I have found various ways to improved denoising performance without requiring this, that's why I have not worked on this since a few months.
Basically, currently my priority is now to improve denoiseprofile. For instance, you may have noticed the coarse grain slider for non local means in master. I have some other changes ongoing, you can test some of them on branch rawfiner-denoise-profile-updates on my git https://github.com/rawfiner/darktable/tree/rawfiner-denoise-profile-updates Basically I use it like this : - I put the patch size to 4 - I increase the coarse grain noise slider until no very coarse chroma noise remains (some fine grain chrominance noise can remain) - then I increase the details slider to my taste - I fix the remaining chroma noise with the equalizer Note that with these changes, I am mostly using only one instance of denoiseprofile, without any particular blending mode. It works very well for medium and high iso, but is not perfect for very high iso. In such case, it can be combined with denoise bilateral to get nice results. I am also currently working on improving the anscombe transform which is associated with the profile to get closer to our goal to have a variance of 1 everywhere (currently we have some big spike above 1 in the shadows, which is a problem as shadows are usually what we want to denoise the most) Cheers, rawfiner Le jeu. 21 févr. 2019 à 08:03, Andreas Schneider <a...@cryptomilk.org> a écrit : > On Wednesday, 5 September 2018 21:34:21 CET rawfiner wrote: > > Hi! > > Hi rawfinder, > > > Some of you may now that I am working on a raw denoising algorithm. > > One of the hard thing was that prior to demosaic, the algorithms are > > computed on unscaled data, while after demosaic the algorithms can > compute > > a preview on a downscaled image, which is easier in terms of speed. > > what happended to your work, any news? > > > Thanks, > > > Andreas > > > ___________________________________________________________________________ darktable developer mailing list to unsubscribe send a mail to darktable-dev+unsubscr...@lists.darktable.org
