Normal Inverse Gaussian Model-Based Image Denoising in the NSCT Domain
Table 1
Denoising results (PSNR in dB) of the various denoising methods with different noise standard deviations, σ. The best result for each image and setting is displayed in boldface.
Image
Method
σ/PSNR
5/34.16
10/28.14
15/24.61
20/22.11
25/20.18
50/14.16
75/10.63
100/8.14
Lena
BivShrink
38.05
35.32
33.59
32.33
31.36
28.24
26.44
25.21
BLS-GSM
38.56
35.68
33.96
32.72
31.75
28.69
26.96
25.83
SA-DCT
38.54
35.58
33.87
32.63
31.66
28.60
26.76
25.51
K-SVD
38.61
35.51
33.71
32.40
31.37
27.85
25.82
24.55
Ram’s
38.33
35.39
33.81
32.68
31.78
29.01
27.24
26.00
BM3D
38.72
35.93
34.27
33.05
32.08
28.86
27.02
25.57
Proposed
39.13
36.18
34.52
33.32
32.37
29.37
27.57
26.26
Barbara
BivShrink
36.74
33.38
31.27
29.75
28.61
25.23
23.53
22.48
BLS-GSM
37.85
34.10
31.93
30.38
29.19
25.50
23.67
22.65
SA-DCT
37.49
33.50
31.39
30.00
28.95
25.43
23.52
22.49
K-SVD
38.10
34.45
32.42
30.85
29.57
25.48
22.97
21.87
Ram’s
37.75
34.41
32.70
31.50
30.54
27.39
25.54
24.24
BM3D
38.31
34.98
33.11
31.78
30.72
27.17
25.10
23.49
Proposed
38.36
34.82
32.84
31.45
30.38
27.10
25.26
24.01
Bold number indicates best performing method in separate column.
