Image Smoothing Method Based on PDE's
Xin Chen, Lou Yu-ping · Computer and Modernization · 2004
The conventional image smoothing methods can eliminate the noise as well as smear the image features such as edges,lines and textures,while the anisotropic diffusion algorithm based on partial differential equations(PDE's) can not only suppress the noise but also preserve these features.An improved method is proposed by adding a gradient threshold and a Gaussian smoothing kernel to the Perona Malik model,and it's proved by experiments to be able to remove the isolated noise more effectively as well as to preserve the edges better.