A New Fast Algorithm for Constrained Four-Directional Total Variation Image Denoising Problem

Fan Liao, Jean Louis Coatrieux, Jiasong Wu and Huazhong Shu

Mathematical Problems in Engineering, 2015, vol. 2015, 1-11

Abstract:

A new four-directional total variation (4-TV) model, applicable to isotropic and anisotropic TV functions, is proposed for image denoising. A dual based fast gradient projection algorithm for the constrained 4-TV image denoising problem is also reported which combines the well-known gradient projection and the fast gradient projection methods. Experimental results show that this model provides in most cases a better signal to noise ratio when compared to previous models like the reference TV, the total generalized variation, and the nonlocal total variation.

Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:hin:jnlmpe:815132

DOI: 10.1155/2015/815132

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