A generalization of the Perona-Malik anisotropic diffusion method using restricted dissimilarity functions

Abstract

There exists a large number of techniques for content-aware smoothing. Despite its simplicity, the Perona-Malik Anisotropic Diffusion method is among the most employed ones. In this work we study this method in detail and propose a generalization of its diffusion scheme using restricted dissimilarity functions to measure the intensity differences between neighbouring pixels. This generalization permits a better adaptation of the diffusion process to the characteristics of the images.

Keywords:

• Image processing
• Anisotropic diffusion
• Edge detection
• Restricted dissimilarity function