Nonlocal Image Restoration With Bilateral Variance Estimation: A Low-Rank Approach

  title={Nonlocal Image Restoration With Bilateral Variance Estimation: A Low-Rank Approach},
  author={Weisheng Dong and Guangming Shi and Xin Li},
  journal={IEEE Transactions on Image Processing},
Simultaneous sparse coding (SSC) or nonlocal image representation has shown great potential in various low-level vision tasks, leading to several state-of-the-art image restoration techniques, including BM3D and LSSC. However, it still lacks a physically plausible explanation about why SSC is a better model than conventional sparse coding for the class of natural images. Meanwhile, the problem of sparsity optimization, especially when tangled with dictionary learning, is computationally… CONTINUE READING
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