Advances, Systems and Applications
Table 1 The ridgelet-DCT coefficients under different attacks
Image Processing | PSNR (dB) | O (1,1) | O (1,2) | O (1,3) | O (1,4) | O (1,5) | O (1,6) | O (1,7) | O (1,8) | O (1,9) | O (1,10) | Sequence of Coefficient Signs | NC |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
The brain image | \ | 3.9960 | 0.4723 | 0.0000 | 0.000 | 0.0055 | -3.8745 | -0.5619 | -0.0064 | -0.217 | 0.0000 | 1100100000 | 1 |
Gaussian noise attack with 1% | 12.36 | 4.9354 | 0.4014 | 0.0000 | 0.0000 | 0.0023 | -4.1378 | -0.4790 | -0.0042 | -0.1832 | 0.0000 | 1100100000 | 1 |
JPEG compression attack with 4% | 17.61 | 4.0269 | 0.5057 | 0.0000 | 0.0000 | 0.0025 | -3.9131 | -0.6088 | -0.0063 | -0.2324 | 0.0000 | 1100100000 | 1 |
Median filter attack with [3 × 3] and 10 times | 21.85 | 3.6915 | 0.4240 | 0.0000 | 0.0000 | 0.0162 | -3.6004 | -0.5122 | -0.0041 | -0.1952 | 0.0000 | 1100100000 | 1 |
Rotation attack with clockwise 5◦ | 12.38 | 3.9962 | 0.4678 | 0.0000 | 0.0000 | 0.0481 | -3.8752 | -0.5556 | -0.0514 | -0.2154 | 0.0000 | 1100100000 | 1 |
Translation attack with left 5% | 11.75 | 3.9960 | 0.4743 | 0.0000 | 0.0000 | 0.3200 | -3.8427 | -0.5595 | 0.0520 | -0.2186 | 0.0000 | 1100100100 | 0.99 |
Translation attack with down 7% | 12.59 | 3.9514 | 0.7080 | 0.0000 | 0.0000 | 0.0025 | -3.7529 | -0.8425 | -0.0069 | -0.3255 | 0.0000 | 1100100000 | 1 |
Scaling attack with 95% | \ | 4.1322 | 0.4069 | 0.0000 | 0.0000 | 0.0252 | -0.4489 | -3.7705 | -0.0049 | -0.1870 | 0.0000 | 1100100000 | 1 |
Cropping attack with Y direction 10% | \ | 3.8646 | 0.6490 | 0.0000 | 0.0000 | 0.0054 | -0.7432 | -3.6219 | -0.0032 | -0.3026 | 0.0000 | 1100100000 | 1 |