Table 1: Watermarked Medical Cover Image (Logo embedded in the LH subband).
Type of Attack |
X-rays Modality |
MRI Modality |
CT Scan Modality |
PSNR |
SSIM |
NC |
PSNR |
SSIM |
NC |
PSNR |
SSIM |
NC |
No attack |
30.279 |
0.504 |
0.954 |
23.342 |
0.456 |
0.843 |
28.292 |
0.610 |
0.918 |
Mean |
28.037 |
0.277 |
0.957 |
22.600 |
0.358 |
0.862 |
26.537 |
0.338 |
0.928 |
Median |
29.720 |
0.390 |
0.956 |
24.076 |
0.460 |
0.858 |
28.204 |
0.523 |
0.927 |
Noise |
09.212 |
0.054 |
0.497 |
09.629 |
0.088 |
0.383 |
13.645 |
0.259 |
0.362 |
Rotation |
14.210 |
0.097 |
0.559 |
11.555 |
0.014 |
0.187 |
16.560 |
0.013 |
0.527 |
Shear |
15.042 |
0.184 |
0.671 |
11.918 |
0.030 |
0.307 |
15.849 |
0.021 |
0.432 |
Contrast |
11.978 |
0.315 |
0.954 |
09.573 |
0.240 |
0.843 |
10.426 |
0.165 |
0.918 |
Compression |
03.807 |
0.047 |
0.506 |
02.618 |
0.006 |
0.393 |
02.225 |
0.006 |
0.369 |
Tampering |
18.802 |
0.377 |
0.840 |
15.517 |
0.377 |
0.652 |
15.298 |
0.498 |
0.673 |