Removal of Salt and Pepper Noise in Corrupted Image Based on Multilevel Weighted Graphs and IGOWA Operator

Table 1

Comparison of restorations in PSNR (dB) for Lena image.

Methods	Noise density
	10%	20%	30%	40%	50%	60%	70%	80%	90%
NAFSMF	36.71	34.53	32.55	30.26	27.94	25.88	23.32	21.41	19.26
MDBUTMF	37.96	34.77	32.29	30.33	28.20	26.46	24.27	21.60	18.33
AWMF	38.90	36.30	35.07	33.86	32.62	31.17	29.50	27.67	25.04
FSMMF	38.78	36.41	34.32	32.40	30.39	28.40	26.56	24.92	23.10
LGF	38.62	36.90	34.76	32.87	31.44	30.22	28.85	27.02	24.71
ANCLPVMF	39.97	37.62	35.31	33.74	32.40	31.16	29.25	27.39	25.13
Proposed	42.86	39.14	36.75	34.26	32.73	31.21	29.54	27.70	25.32