A Non-standard Anisotropic Diffusion for Speckle Noise Removal

Journal of Systemics, Cybernetics and Informatics

Thomas Neil Williams¹  Hyeona Lim² 

[1] Center for Advanced Vehicular Systems, Mississippi State University, Box 5405, Mississippi State, MS 39762, USA;Department of Mathematics and Statistics, Mississippi State University;

关键词: nonphysical dissipation;    total variation (TV) model;    denoising;    speckle noise;    anisotropic diffusion;    texture-free residual parametrization;    fine structures;   

DOI  :  

来源: DOAJ

【 摘 要 】

The main objective of this article is to develop a non-standard partial differential equation-based anisotropic diffusion model for efficient edge-preserving denoising for speckle noised images. The standard total variation (TV)-based energy functional is not based on the multiplicative-ness of speckle noise which is inappropriate for a speckle noise removal. Moreover, TV-based models can easily lose fine structures and produce non-physical dissipation during the noise removal process. The principal feature in this article is an introduction of a new coefficient for the non-linear diffusion term of the Euler-Lagrange equation corresponding to the minimization of the energy functional. Combination of a new model with a texture-free residual parametrization enables us to overcome the drawback arising from use of the standard TV-based model. The numerical results indicate the effectiveness and robustness of the new model.

【 授权许可】

Unknown