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PSNR, WPSNR, and Normalized Cross-Correlation for watermarked and attacked by image rotation transform.
| Rotation angle (°) | PSNR (dB) | WPSNR (dB) | NC |
|---|---|---|---|
| 1 | 26.7254 | 34.2455 | 1.0000 |
| 5 | 19.7487 | 25.8241 | 1.0000 |
| 11 | 16.8277 | 22.8616 | 1.0000 |
| 15 | 15.7812 | 21.8145 | 0.9728 |
| 19 | 15.0400 | 21.0650 | 0.9812 |
| 23 | 14.4720 | 20.4955 | 0.9854 |
| 27 | 14.0551 | 20.0784 | 0.9621 |
| 31 | 13.7572 | 19.7826 | 0.9474 |
| 35 | 13.5653 | 19.5880 | 0.9455 |
| 39 | 13.4471 | 19.4679 | 0.9285 |
| 45 | 13.4550 | 19.4698 | 0.9645 |
