Table 4 BCR values of the proposed DWT-DCT technique under geometrical attacks
From: Blind image watermarking technique based on differential embedding in DWT and DCT domains
Attack | Image | ||||
|---|---|---|---|---|---|
Baboon | Bridge | Jetplane | Peppers | Pirate | |
Resizing | 98.6 | 99.7 | 100 | 100 | 100 |
(512→256→512) | |||||
Resizing | 77.1 | 84.4 | 96.4 | 97.3 | 93.8 |
(512→200→512) | |||||
Rotation (0.25°) | 78.3 | 87.6 | 97.7 | 99.3 | 97.3 |
Rotation (0.5°) | 54.3 | 56.1 | 56.4 | 56.1 | 57.4 |
Surrounding | 97.4 | 99.6 | 97.6 | 99.5 | 99.8 |
crop (15 %) | |||||
Surrounding | 94.2 | 97.3 | 97.2 | 99.2 | 99.2 |
crop (25 %) | |||||