BM3D filter in salt-and-pepper noise removal

EURASIP Journal on Image and Video Processing

Table 2 PSNR in filtering of grayscale images for various percentage of impulses

	20 %	40 %	60 %	80 %	90 %	95 %	97.5 %
Cameraman	30.04	25.92	23.27	21.11	19.68	18.53	17.02
	33.12	28.71	25.47	22.78	20.88	19.41	17.59
	35.06	30.88	27.50	23.78	22.08	20.47	18.41
Mandi	38.95	34.78	32.15	29.90	28.00	26.28	24.70
	40.61	37.38	35.22	32.98	30.55	28.13	25.96
	40.51	37.16	34.76	45.14	30.49	28.61	26.80
Moon	40.95	36.03	32.71	30.34	28.30	25.80	23.47
	42.97	39.17	36.03	32.98	30.25	26.96	24.14
	42.79	39.17	36.63	34.19	32.30	28.70	25.25
Pout	43.94	39.01	36.05	33.58	31.30	29.36	27.46
	44.26	41.03	38.25	36.33	33.56	31.11	28.78
	43.85	40.33	36.97	34.10	32.16	30.90	29.22
Saturn	41.16	37.08	34.52	32.00	25.86	16.71	13.31
	44.47	41.90	39.28	36.15	27.23	17.04	13.51
	44.96	42.68	40.08	37.05	32.02	17.59	14.81
West Concord	28.82	24.49	21.80	19.68	18.02	16.67	15.47
	30.31	26.53	24.00	21.60	19.50	17.74	16.18
	30.41	46.57	24.01	21.37	19.84	18.44	16.88
Lena	36.94	32.26	29.44	26.87	25.00	23.16	21.54
	39.46	35.51	32.81	29.76	27.31	24.79	22.58
	39.49	35.70	32.68	29.78	27.74	25.78	23.58
Baboon	27.73	23.76	21.33	19.44	18.40	17.66	16.92
	29.63	25.75	23.27	21.07	19.70	18.67	17.64
	30.06	26.33	23.68	21.47	20.20	19.35	18.52
Clock	32.61	28.16	23.27	23.27	21.64	20.28	18.94
	37.41	32.40	28.97	25.53	23.28	21.42	19.58
	37.91	34.33	30.88	26.75	24.30	22.23	20.04

Upper row- decision-based/adaptive median filers; middle row - proposed scheme after single iteration by BM3D filter; bottom row - proposed scheme after five iterations by BM3D filter