Research Article
Blind Image Watermarking Based on Adaptive Data Spreading in n-Level DWT Subbands
Table 7
Performance comparison with [
15] with NCC value.
| Attack | Proposed | [15] |
| Average PSNR [dB] | 39.69 | 39.87 |
| JPEG quality 80 | 0.9971 | 0.9559 |
| JPEG quality 60 | 0.8805 | 0.8040 |
| Gaussian Noise 0.5 | 1.0000 | 0.8460 |
| Salt & Pepper Noise | 0.8437 | 0.9388 |
| Median Filtering 33 | 0.7364 | 0.8743 |
| Average Filtering 33 | 0.8082 | 0.9912 |
| Gaussian Filtering 33 | 0.9381 | 0.9912 |
| Average robustness | 0.8863 | 0.9145 |
|
|