From: Improving SVD-based image watermarking via block-by-block optimization on singular values
Quality factor
10
20
30
Reference [24]
15.08
8.67
3.92
Reference [25]
13.22
9.12
4.03
Reference [27]
11.07
8.16
3.53
Proposed method
k = r = 2
15.77
9.32
5.46
k = r = 4
12.68
8.13
3.12
k = r = 8
11.15
4.84
0.97
