Alternating direction method of multipliers for nonconvex log total variation image restoration

被引:17
作者
Zhang, Benxin [1 ]
Zhu, Guopu [2 ]
Zhu, Zhibin [3 ]
Kwong, Sam [4 ,5 ]
机构
[1] Guilin Univ Elect Technol, Sch Elect Engn & Automat, Guangxi Key Lab Automat Detecting Technol & Instru, Guilin 541004, Peoples R China
[2] Harbin Inst Technol, Sch Comp Sci & Technol, Harbin 150001, Peoples R China
[3] Guilin Univ Elect Technol, Sch Math & Comp Sci, Guangxi Coll & Univ Key Lab Data Anal & Computat, Guilin 541004, Peoples R China
[4] City Univ Hong Kong, Dept Comp Sci, Hong Kong 999077, Peoples R China
[5] City Univ Hong Kong, Shenzhen Res Inst, Shenzhen 518057, Peoples R China
基金
中国国家自然科学基金;
关键词
Image restoration; Log total variation; Alternating direction method of multipliers; Nonconvex optimization; Convergence; COMPUTED-TOMOGRAPHY; RECONSTRUCTION; MINIMIZATION; MODEL; OPTIMIZATION; SELECTION; REMOVAL; NOISE;
D O I
10.1016/j.apm.2022.09.018
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In this paper, we propose a nonconvex log total variation model for image restoration. A specific alternating direction method of multipliers is also presented to solve the noncon-vex optimization model. Under mild conditions, we prove that the sequence generated by the proposed alternating direction method of multipliers converges to a stationary point. Experiment results on image denoising, image deblurring, computed tomography, magnetic resonance imaging and image super-resolution demonstrate that the proposed method is effective and improves the quality of image recovery.(c) 2022 Elsevier Inc. All rights reserved.
引用
收藏
页码:338 / 359
页数:22
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