Medium noise image with sky (v 2.10.1)

For images with large uniform color areas and medium or high noise, DCT and NLM give the best results.
Wavelets tend to create artifacts and Anisotropic diffusion don't denoise enough or give aquarelled results.

Click on links to select the image below Original Option 1 (DCT 800,16 / Channels Y,Cb,Cr) Option 2 (NLM 20,16,3 Enhanced / Channels Y,Cb,Cr)

Option 1 (DCT 800,16 / Channels Y,Cb,Cr)

Option 2 (NLM 20,16,3 Enhanced / Channels Y,Cb,Cr)