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Parallel transformation of K-SVD solar image denoising algorithm
Liang, Youwen1,2,3; Tian, Yu1,2; Li, Mei1,2
2017
Conference NameProceedings of SPIE: Second International Conference on Photonics and Optical Engineering
Source Publication0277-786X
Volume10256
Pages1025614
AbstractThe images obtained by observing the sun through a large telescope always suffered with noise due to the low SNR. K-SVD denoising algorithm can effectively remove Gauss white noise. Training dictionaries for sparse representations is a time consuming task, due to the large size of the data involved and to the complexity of the training algorithms. In this paper, an OpenMP parallel programming language is proposed to transform the serial algorithm to the parallel version. Data parallelism model is used to transform the algorithm. Not one atom but multiple atoms updated simultaneously is the biggest change. The denoising effect and acceleration performance are tested after completion of the parallel algorithm. Speedup of the program is 13.563 in condition of using 16 cores. This parallel version can fully utilize the multi-core CPU hardware resources, greatly reduce running time and easily to transplant in multi-core platform. © 2017 SPIE.
KeywordApplication programming interfaces (API) - Parallel processing systems - Parallel programming - Photonics - Signal to noise ratio - White noise
Indexed BySCI ; Ei
Language英语
EI Classification Number2017-2168
Document Type会议论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/9036
Collection自适应光学技术研究室(八室)
Affiliation1.Key Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu; 610209, China;
2.Laboratory on Adaptive Optics, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu; 610209, China;
3.University of Chinese, Academy of Sciences, Beijing; 100049, China
Recommended Citation
GB/T 7714
Liang, Youwen,Tian, Yu,Li, Mei. Parallel transformation of K-SVD solar image denoising algorithm[C],2017:1025614.
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