Research Article
Wavelet-Based Color Pathological Image Watermark through Dynamically Adjusting the Embedding Intensity
Table 6
Compare the proposed method with the algorithms in [
4,
11,
18].
| Attacks | NC | Reference [4] | Reference [11] | Reference [18] | Our algorithm | (PSNR = 42.02 dB) | (PSNR = 44.73 dB) | (PSNR = 42.98 dB) | (PSNR = 31.14 dB) |
| Median filter | 0.90 | 0.88 | 0.93 | 1 | JPEG (ratio = 0.80) | 0.99 | NA | 1 | 0.9997 | JPEG (ratio = 0.50) | 0.96 | 0.95 | 0.96 | 0.9976 | JPEG (ratio = 0.10) | 0.34 | 0.33 | 0.32 | 0.9987 | Rotation (degree: 0.25°) | 0.59 | 0.61 | 0.65 | 0.9897 | Rotation (degree: −0.25°) | 0.60 | 0.65 | 0.72 | 0.9900 | Cropping 1/4 | 0.66 | 0.60 | 0.67 | 0.8561 | Scaling | 0.88 | 0.71 | 0.85 | 0.9999 |
|
|