The Nonlocal Sparse Reconstruction Algorithm by Similarity Measurement with Shearlet Feature Vector

Table 3

The PSNR (dB) indicator with 𝜎=20.

	Noisy	NSCT	BM3D	K-SVD	Proposed
House	22.10	31.78	33.76	32.67	32.89
Barbara	22.05	28.95	30.68	29.75	30.19
Peppers	22.09	30.12	31.36	30.46	31.12
Bridge	22.13	26.41	27.25	26.87	27.02
Butterfly	21.11	27.65	29.46	28.32	28.96