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231224s2014 xx |||||o 00| ||eng c |
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|a 10.1109/TIP.2014.2329449
|2 doi
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|a eng
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| 100 |
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|a Dong, Weisheng
|e verfasserin
|4 aut
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| 245 |
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|a Compressive sensing via nonlocal low-rank regularization
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|c 2014
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 29.09.2015
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|a Date Revised 15.08.2014
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Sparsity has been widely exploited for exact reconstruction of a signal from a small number of random measurements. Recent advances have suggested that structured or group sparsity often leads to more powerful signal reconstruction techniques in various compressed sensing (CS) studies. In this paper, we propose a nonlocal low-rank regularization (NLR) approach toward exploiting structured sparsity and explore its application into CS of both photographic and MRI images. We also propose the use of a nonconvex log det ( X) as a smooth surrogate function for the rank instead of the convex nuclear norm and justify the benefit of such a strategy using extensive experiments. To further improve the computational efficiency of the proposed algorithm, we have developed a fast implementation using the alternative direction multiplier method technique. Experimental results have shown that the proposed NLR-CS algorithm can significantly outperform existing state-of-the-art CS techniques for image recovery
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|a Journal Article
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| 650 |
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|a Research Support, Non-U.S. Gov't
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| 650 |
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|a Research Support, U.S. Gov't, Non-P.H.S.
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| 700 |
1 |
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|a Shi, Guangming
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Li, Xin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ma, Yi
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Huang, Feng
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t IEEE transactions on image processing : a publication of the IEEE Signal Processing Society
|d 1992
|g 23(2014), 8 vom: 20. Aug., Seite 3618-32
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|g year:2014
|g number:8
|g day:20
|g month:08
|g pages:3618-32
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|u http://dx.doi.org/10.1109/TIP.2014.2329449
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