Research Article
Reversible Image Watermarking Algorithm Based on Quadratic Difference Expansion
Table 6
Performance comparison of multiround watermarking embedding algorithms.
| Image name | Evaluating indicator | One round | Two rounds | Three rounds | PSNR | SSIM | PSNR | SSIM | PSNR | SSIM |
| Lena | 65.47 | 0.992 | 58.41 | 0.989 | 50.56 | 0.985 | Baboon | 64.21 | 0.991 | 57.19 | 0.987 | 49.07 | 0.982 | Barbara | 64.98 | 0.992 | 57.86 | 0.988 | 50.11 | 0.984 | Peppers | 64.35 | 0.991 | 57.27 | 0.988 | 49.31 | 0.983 |
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