Table 5: PSNR, WPSNR, and Normalized Cross-Correlation for watermarked and attacked by image rotation transform.

Rotation angle (°)PSNR (dB)WPSNR (dB)NC

126.725434.24551.0000
519.748725.82411.0000
1116.827722.86161.0000
1515.781221.81450.9728
1915.040021.06500.9812
2314.472020.49550.9854
2714.055120.07840.9621
3113.757219.78260.9474
3513.565319.58800.9455
3913.447119.46790.9285
4513.455019.46980.9645