Journal of Systemics, Cybernetics and Informatics | |
A Non-standard Anisotropic Diffusion for Speckle Noise Removal | |
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