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