Example 1: Here we used these settings: radius=3, flatten=95, dry=34. The big flatten setting gives a painted feeling, while the dry setting helps to not distort too much original picture.
Example 2: With a radius of 2.5, we respectively applied a "flatten" setting of 80 then -80. Notice that the yellow spot of the berry are better eliminated with a high flatten setting.
Example 3: Here a simple comparison between a "flat median" and a "regular" one.
Example 4: Here a "flat median" applied on the horizontal direction only.
Remark: I've been experimenting a lot, about possible ways to estimate median without sorting datas. The plugin "Flat Median" represents the result I was able to reach.
See also: Noise Shampoo.
This plugin interests you? Click the link below.