Table 4 Averaged bit error rates of the watermarking schemes under various attacks
Attack type | Adaptive DWT-SVD (%) | SVD-DCT (%) | LWT-SVD (%) | Proposed (%) | Proposed + enhancement 1 (%) | Proposed + enhancements 1 and 2 (%) |
|---|---|---|---|---|---|---|
0 (none) | 0.000 | 0.000 | 0.000 | 0.121 | 0.000 | 0.000 |
A | 3.170 | 0.310 | 0.000 | 0.121 | 0.000 | 0.000 |
B | 0.000 | 0.000 | 0.000 | 0.199 | 0.082 | 0.063 |
C | 31.160 | 0.000 | 74.010 | 0.121 | 0.000 | 0.000 |
D | 0.000 | 0.000 | 0.000 | 0.312 | 0.199 | 0.158 |
E | 0.010 | 0.090 | 0.000 | 1.294 | 1.205 | 1.016 |
F | 0.760 | 0.110 | 0.000 | 0.121 | 0.000 | 0.000 |
G | 0.610 | 0.010 | 0.300 | 0.158 | 0.019 | 0.004 |
H | 0.010 | 0.670 | 0.040 | 0.845 | 0.730 | 0.537 |
I | 0.000 | 0.000 | 0.000 | 0.130 | 0.002 | 0.000 |
J | 1.770 | 1.140 | 2.180 | 1.616 | 1.582 | 1.168 |
K | 0.000 | 0.000 | 0.000 | 0.121 | 0.000 | 0.000 |