Salt and Pepper Noise Removal with Noise Detection and a Patch-Based Sparse Representation

Figure 13

Effect of regularization parameter 𝜆 for the proposed approach. (a) The curve of MSSIM versus 𝜆; (b)–(d) reconstructed images when 𝜆=2,1,7, respectively. Note: tests are performed at 50% impulse noise level.

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(b)

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(d)