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Table 6 Rotation

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

Degree

 

1

2

4

Reference [24]

22.61

26.35

27.56

Reference [25]

17.11

23.37

23.16

Reference [27]

19.24

23.67

25.13

Proposed method

k = r = 2

38.57

40.03

40.35

k = r = 4

37.07

38.89

39.67

k = r = 8

37.31

37.65

40.31