The Noise Clinic: a Blind Image Denoising Algorithm
Please cite the reference article if you publish results obtained with this online demo.
- Number of scales. Use .
The noise estimation and denoising algorithms are multi-scale and use two scales by default.

- Sigma coefficient.
If you find that the noise is under (resp. over) evaluated, you can adjust it by putting this coefficient greater than 1.0 (resp. smaller than 1.0). This coefficient will be multiplied to the estimated STD of noise.

Now you can run the algorithm on the whole image:

Or you can run it after selecting a subimage, by clicking on two opposite corners of the sub-image.