Denoise images (gray level, can be extended for co,or) based on the concepts of linear and nonlinear diffusion. Will not introduce any blocky effects as in the case of 2nd order PDEs.
Ref :Guy Gilboa, Nir Sochen and Yehoshua Y Zeevi, Image Enhancement and Denoising by Complex Diffusion Processes, IEEE Trans. On Pattern Analysis and Machine Imtelligence, Vol. 26, No. 8, Aug. 2004
Jeny Rajan (2022). Complex Diffusion (https://www.mathworks.com/matlabcentral/fileexchange/7688-complex-diffusion), MATLAB Central File Exchange. Retrieved .
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