Table 1 Embedding capacity under fixed PSNR
From: Improving SVD-based image watermarking via block-by-block optimization on singular values
Method | Image genre | Parameters | Embedding capacity (bits) |
|---|---|---|---|
Reference [24] | Lena | α = 28 | 256 |
Jet | α = 25 | 256 | |
Peppers | α = 28 | 256 | |
Cameraman | α = 27 | 256 | |
Reference [25] | Lena | α = 28 | 256 |
Jet | α = 25 | 256 | |
Peppers | α = 28 | 256 | |
Cameraman | α = 27 | 256 | |
Reference [27] | Lena | α = 28 | 256 |
Jet | α = 25 | 256 | |
Peppers | α = 28 | 256 | |
Cameraman | α = 27 | 256 | |
The proposed method | Lena | r = 2, q = 27 | 512 |
r = 4, q = 55 | 256 | ||
r = 8, q = 135 | 64 | ||
Jet | r = 2, q = 26 | 512 | |
r = 4, q = 44 | 256 | ||
r = 8, q = 129 | 64 | ||
Peppers | r = 2, q = 28 | 512 | |
r = 4, q = 51 | 256 | ||
r = 8, q = 131 | 64 | ||
Cameraman | r = 2, q = 28 | 512 | |
r = 4, q = 50 | 256 | ||
r = 8, q = 140 | 64 |