Fig. 4
Results of denoising with nebula image: a) the image used both for learning a noisy dictionary and denoising, with a S/NP of 26.67 dB; b) the learn dictionary; c) the result of the wavelet shrinkage algorithm that reaches a S/NP of 33.61 dB; d) the result of denoising using the dictionary learned on the noisy image, with a S/NP of 35.24 dB.
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