Research Article
Image Watermark Based on Extended Shearlet and Insertion Using the Largest Information Entropy on Horizontal Cone
Table 6
Experimental results under the attack of “Gaussian” white noise (mean = 0).
| Variance | v = 0.00001 | v = 0.00005 | v = 0.0001 | v = 0.0005 | v = 0.001 |
| Lena | | | | | | PSNR | 47.9293 | 42.5216 | 39.7561 | 32.9411 | 29.9570 | MSE | 1.0475 | 3.6585 | 6.8782 | 33.0349 | 65.6718 | NC | 0.9849 | 0.9766 | 0.9575 | 0.8721 | 0.8345 | The extracted watermark | | | | | |
| Boat | | | | | | PSNR | 48.0248 | 42.5474 | 39.7670 | 32.9706 | 29.9739 | MSE | 1.0247 | 3.6169 | 6.8608 | 32.8114 | 65.4169 | NC | 0.9854 | 0.9697 | 0.9565 | 0.8643 | 0.8179 | The extracted watermark | | | | | |
| Barbara | | | | | | PSNR | 48.0677 | 42.5511 | 39.7595 | 32.9428 | 29.9936 | MSE | 1.0146 | 3.6138 | 6.8727 | 33.0220 | 65.1206 | NC | 0.9844 | 0.9663 | 0.9443 | 0.8701 | 0.8301 | The extracted watermark | | | | | |
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