Fig. 6
An illustration of three amplitude graphs showing signal denoising: Input SNR 5.47 decibels, SURE BASED ESTIMATE, and MPE BASED ESTIMATE at 14.88 decibels.

(Color online) Denoising performance of the MPE- and SURE-based pointwise shrinkage estimators for the Piece-Regular signal corrupted by Laplacian noise. The PE risk is calculated by using a GMM approximation and setting ϵ = 3σ

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