Table 2 Restoration results in PSNR (dB) for image Lena corrupted by various densities of SPN

Median Filter

15.27

12.35

10.01

8.14

6.64

OCS [4]

30.63

30.55

29.71

27.95

25.58

EPA [5]

34.10

32.66

31.03

29.01

26.04

SAWM [6]

33.82

32.32

30.69

28.84

26.17

DAM [7]

32.78

31.24

29.68

27.95

25.54

CM [8]

33.85

32.11

30.71

28.59

26.02

FEMF [9]

33.28

31.64

30.18

28.47

25.94

AIM [Proposed]

34.17

32.82

31.40

29.82

27.52