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

机译:约束四向总变化图像去噪问题的快速算法

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摘要

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.
机译:提出了一种适用于各向同性和各向异性电视功能的新的四方向总变化(4-TV)模型,用于图像降噪。还报道了一种用于约束4-TV图像降噪问题的基于双重的快速梯度投影算法,该算法结合了众所周知的梯度投影和快速梯度投影方法。实验结果表明,与以前的模型(例如参考电视,总广义变化和非局部总变化)相比,该模型在大多数情况下可提供更好的信噪比。

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  • 来源
    《Mathematical Problems in Engineering》 |2015年第2期|815132.1-815132.11|共11页
  • 作者单位

    Southeast Univ, Key Lab Comp Network & Informat Integrat, LIST, Minist Educ, Nanjing 210096, Jiangsu, Peoples R China.;

    Ctr Rech Informat Med Sino Francais CRIBs, F-35000 Rennes, France.;

    Ctr Rech Informat Med Sino Francais CRIBs, F-35000 Rennes, France.;

    Ctr Rech Informat Med Sino Francais CRIBs, F-35000 Rennes, France.;

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