Table 2 The calculation results of average value r and radius R under different attacks
From: Adaptive reversible image watermarking algorithm based on IWT and level set
Attack types | Average value r | Radius R |
|---|---|---|
Original image | 79.46 | 80 |
Rotate 10° | 79.16 | 80 |
Rotate 30° | 78.83 | 80 |
Rotate 45° | 78.69 | 80 |
Rotate 60° | 80.27 | 80 |
Shear 10% | 79.62 | 80 |
Shear 20% | 80.11 | 80 |