Abstract | ||
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Turbo compressed sensing (Turbo-CS) is an efficient iterative algorithm for sparse signal recovery with partial orthogonal sensing matrices. In this paper, we extend the Turbo-CS algorithm to solve compressed sensing problems involving a more general signal structure, including compressive image recovery and low-rank matrix recovery. A main difficulty for such an extension is that the original TurboCS algorithm requires a prior knowledge of the signal distribution that is usually unavailable in practice. To overcome this difficulty, we propose to redesign the Turbo-CS algorithm by employing a generic denoiser that does not depend on the prior distribution, and hence the name denoising-based Turbo-CS (D-Turbo-CS). We then derive the extrinsic information for a generic denoiser by following the Turbo-CS principle. Based on that, we optimize the parametric extrinsic denoisers to minimize the output mean-square error (MSE). Explicit expressions are derived for the extrinsic SURE-LET denoiser used in image denoising and also for the singular value thresholding denoiser used in low-rank matrix denoising. We find that the dynamics of D-Turbo-CS can be well described by a scaler recursion called MSE evolution, similar to the case for Turbo-CS. Numerical results demonstrate that D-Turbo-CS considerably outperforms the counterpart algorithms in both reconstruction quality and running time. |
Year | DOI | Venue |
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2017 | 10.1109/ACCESS.2017.2697978 | IEEE ACCESS |
Keywords | DocType | Volume |
Compressed sensing,message passing,orthogonal sensing matrix,denoising,MSE evolution | Journal | 5 |
ISSN | Citations | PageRank |
2169-3536 | 2 | 0.37 |
References | Authors | |
14 | 3 |
Name | Order | Citations | PageRank |
---|---|---|---|
Zhipeng Xue | 1 | 4 | 1.76 |
Junjie Ma | 2 | 148 | 15.24 |
Xiaojun Yuan | 3 | 106 | 10.91 |