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

Table 2

The PSNR (dB) indicator with 𝜎=15.

	Noisy	NSCT	BM3D	K-SVD	Proposed
House	24.89	33.11	34.67	33.92	34.22
Barbara	24.63	30.49	32.33	31.40	31.97
Peppers	24.61	31.51	32.70	31.77	32.16
Bridge	24.70	27.71	28.83	28.55	28.62
Butterfly	24.63	29.17	30.64	29.89	30.18