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Table 4 Gaussian noise (mean = 0)

From: Improving SVD-based image watermarking via block-by-block optimization on singular values

Method and parameter

 

0.0002

0.0005

0.0009

Reference [24]

24.26

38.51

42.63

Reference [25]

19.92

33.20

38.28

Reference [27]

20.28

37.12

38.98

Proposed method

k = r = 2

7.13

21.73

34.96

k = r = 4

6.69

21.87

25.58

k = r = 8

5.46

13.28

22.65