* Michael Below <be...@judiz.de> [01-24-15 14:10]: > if I need to denoise my photos, I use wavelet denoise in HSV color > blending mode for the color noise, and if also I want to get rid of > luminance noise, I use the non-local means denoise in HSV luminance > blending mode. Usually this works well. > > In evening shots, the sky sometimes gets uneven/blotchy when I use > non-local means denoising. Increasing the level of non-local means > denoising does not help. Switching to just wavelet denoise in normal > blending mode, without non-local means denoising, helps with the > blotchiness, but it loses details. > > Example (wavelet denoise 0,8/non-local means 2,8) > https://www.dropbox.com/sh/ie5vfkfbuw21r3h/AABnvaW6hQF_lzOr_H52MDJLa?dl=0 > > Any tips how to properly denoise an evening sky?
To my "non"-discerning and very untrained eye, I only notice a slightly brighter (lighter) tone in the lightest portion of the sky. The only way I see "blotchy" is if I expand the view too much??? And you have masked the "noise" very effectively in both shots. cravat: My eyes are elderly and due for cataract surgery. But I do like the scene. -- (paka)Patrick Shanahan Plainfield, Indiana, USA @ptilopteri http://en.opensuse.org openSUSE Community Member facebook/ptilopteri http://wahoo.no-ip.org Photo Album: http://wahoo.no-ip.org/gallery2 Registered Linux User #207535 @ http://linuxcounter.net ------------------------------------------------------------------------------ New Year. New Location. New Benefits. New Data Center in Ashburn, VA. GigeNET is offering a free month of service with a new server in Ashburn. Choose from 2 high performing configs, both with 100TB of bandwidth. Higher redundancy.Lower latency.Increased capacity.Completely compliant. http://p.sf.net/sfu/gigenet _______________________________________________ Darktable-users mailing list Darktable-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/darktable-users
