JCP 2014 Vol.9(6): 1418-1425 ISSN: 1796-203X
doi: 10.4304/jcp.9.6.1418-1425
doi: 10.4304/jcp.9.6.1418-1425
Image Denoising via Robust Simultaneous Sparse Coding
Lei Li, Jiangming Kan, Wenbin Li
School of Technology, Beijing Forestry University, Beijing 100083, P. R. China
Abstract—Simultaneous sparse coding (SSC) has shown great potential in image denoising, because it exploits dependencies of patches in nature images. However, imposing joint sparsity might neglect the sight difference between patches. In this paper, we propose an image denoising algorithm based on robust simultaneous sparse coding (RSSC). In our algorithm, the sparse coefficient matrix is decomposed into two parts. One coefficient matrix is imposed on the joint sparse regularizer which exploits self-similarities of image patches while the other matrix is imposed by the elementwise sparse regularizer which considers the subtle differences between patches. Experiments on the benchmark data show the superior performance over the state-of-art algorithms.
Index Terms—Image denoising, robust simultaneous sparse coding, regularization, accelerated proximal gradient (APG)
Abstract—Simultaneous sparse coding (SSC) has shown great potential in image denoising, because it exploits dependencies of patches in nature images. However, imposing joint sparsity might neglect the sight difference between patches. In this paper, we propose an image denoising algorithm based on robust simultaneous sparse coding (RSSC). In our algorithm, the sparse coefficient matrix is decomposed into two parts. One coefficient matrix is imposed on the joint sparse regularizer which exploits self-similarities of image patches while the other matrix is imposed by the elementwise sparse regularizer which considers the subtle differences between patches. Experiments on the benchmark data show the superior performance over the state-of-art algorithms.
Index Terms—Image denoising, robust simultaneous sparse coding, regularization, accelerated proximal gradient (APG)
Cite: Lei Li, Jiangming Kan, Wenbin Li, "Image Denoising via Robust Simultaneous Sparse Coding," Journal of Computers vol. 9, no. 6, pp. 1418-1425, 2014.
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General Information
ISSN: 1796-203X
Abbreviated Title: J.Comput.
Frequency: Bimonthly
Abbreviated Title: J.Comput.
Frequency: Bimonthly
Editor-in-Chief: Prof. Liansheng Tan
Executive Editor: Ms. Nina Lee
Abstracting/ Indexing: DBLP, EBSCO, ProQuest, INSPEC, ULRICH's Periodicals Directory, WorldCat,etc
E-mail: jcp@iap.org
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