Table 6 Attacks used and related parameters.
From: An improved reversible watermarking scheme using embedding optimization and quaternion moments
Type of filter | Wiener | Size 3 × 3 |
|---|---|---|
Median | ||
Gaussian | ||
Type of noise | Gaussian | V = 0.001 |
salt and pepper | 0.001 | |
Type of compression | JPEG | QF = 40 |
JPEG 2000 | CR = 8 | |
Type of rescaling | Resciling-1 | × 0.25 |
Rescaling-2 | × 4 | |
Type of rotation | Angle | Degree = 2 |
Sharpening | 1-Sharpening | 0.2 |
