Table 2: Watermarked Medical Cover Image (Logo embedded in the HL subband).

Type of Attack X-rays Modality MRI Modality CT Scan Modality
PSNR SSIM NC PSNR SSIM NC PSNR SSIM NC
No attack 32.996 0.604 0.990 29.665 0.597 0.971 29.620 0.614 0.951
Mean 31.713 0.373 0.991 28.070 0.492 0.981 28.085 0.363 0.958
Median 33.656 0.510 0.992 30.978 0.615 0.981 30.122 0.533 0.959
Noise 09.212 0.090 0.545 09.630 0.101 0.481 13.645 0.246 0.375
Rotation 13.338 0.103 0.543 13.447 0.013 0.174 16.151 0.010 0.506
Shear 14.251 0.186 0.659 13.874 0.023 0.281 15.536 0.013 0.397
Contrast 11.642 0.337 0.990 11.507 0.321 0.971 10.395 0.179 0.951
Compression 04.086 0.069 0.553 02.937 0.006 0.491 02.299 0.005 0.382
Tampering 18.666 0.473 0.867 17.150 0.461 0.740 13.254 0.459 0.604