Research Article
A Novel Improved Reversible Visible Image Watermarking Algorithm Based on Grad-CAM and JND
Table 4
PSNR and SSIM values of reversible watermarked images with watermark horse and
= 0.6 and
= 0.5
| Cover image | Proportion | PSNR | SSIM | r | Hu and Jeon [5] | Chen et al. [7] | Mohammad et al. [8] | Proposed | Hu and Jeon [5] | Chen et al. [7] | Mohammad et al. [8] | Proposed |
| Wood rabbit | 2 | 18.5095 | 24.3761 | 21.9190 | 25.3271 | 0.8342 | 0.8869 | 0.8880 | 0.9480 | 3 | 21.8731 | 26.7856 | 24.9474 | 30.4880 | 0.9252 | 0.9410 | 0.9241 | 0.9811 | 4 | 24.4574 | 29.2036 | 26.8982 | 34.3454 | 0.9587 | 0.9666 | 0.9376 | 0.9911 |
| Tabby | 2 | 19.1799 | 23.9406 | 21.5767 | 23.9950 | 0.8321 | 0.8702 | 0.8787 | 0.9402 | 3 | 22.5918 | 27.5535 | 24.6448 | 27.8448 | 0.9224 | 0.9384 | 0.9112 | 0.9731 | 4 | 24.9722 | 30.0688 | 26.8721 | 30.8524 | 0.9550 | 0.9649 | 0.9254 | 0.9849 |
| Partridge | 2 | 19.4780 | 25.3601 | 22.8416 | 24.2441 | 0.8437 | 0.8992 | 0.9111 | 0.9434 | 3 | 22.6364 | 27.4272 | 26.0996 | 28.4293 | 0.9310 | 0.9440 | 0.9453 | 0.9763 | 4 | 24.9065 | 29.1831 | 28.4580 | 31.6801 | 0.9610 | 0.9639 | 0.9574 | 0.9872 |
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