Table 2 Results of various attacks on the watermarked image (Figure 3)
From: A dual adaptive watermarking scheme in contourlet domain for DICOM images
| Â | Wavelet Domain | Contourlet Domain | ||||
|---|---|---|---|---|---|---|
| Â | Signature | caption | Signature | caption | ||
Attack | NC | BER | BER | NC | BER | BER |
No Attack | 1 | 0 | 0 | 1 | 0 | 0 |
Average Filter3 × 3 | 0.7960 | 27.35 | 34.72 | 0.9983 | 0.25 | 37.08 |
Median Filter 3 × 3 | 1 | 0 | 20.18 | 0.9966 | 0.50 | 25.15 |
Wiener Filter3 × 3 | 1 | 0 | 32.85 | 1 | 0 | 36.39 |
Salt & pepper Noise(0.003) | 0.9211 | 11.11 | 10.06 | 0.9485 | 7.50 | 32.73 |
Salt & pepper Noise(0.005) | 0.9028 | 13.67 | 13.72 | 0.9236 | 11.00 | 44.03 |
Resize 25% | 1 | 0 | 42.60 | 1 | 0 | 43.29 |
Resize 50% | 1 | 0 | 20.86 | 1 | 0 | 25.71 |
Motion (10,45) | 0.8856 | 15.66 | 43.97 | 0.9745 | 3.75 | 45.77 |