Texture Directionality-Based Digital Watermarking in Nonsubsample Shearlet Domain

Table 9

Experimental results for the rotation attack.

Test image	Angle = 5°; SSIM/NC/BER	Angle = 10°; SSIM/NC/BER	Angle = 15°; SSIM/NC/BER	Angle = 30°; SSIM/NC/BER
Lena	0.3521/0.9907/0.4639	0.2733/0.9795/1.0254	0.2501/0.9624/1.8799	0.2200/0.9473/2.6367
Snow	0.2879/0.9717/1.4160	0.2565/0.9702/1.4893	0.2301/0.9688/1.5625	0.1901/0.9639/1.8066
Snow2	0.3586/0.9736/1.3184	0.3025/0.9639/1.8066	0.2736/0.9517/2.4170	0.2141/0.9409/2.9541
Crowd	0.1649/0.9814/0.9277	0.1191/0.9800/1.0010	0.1102/0.9692/1.5381	0.0822/0.9404/2.9785
Woman	0.2764/0.9902/0.4883	0.1928/0.9863/0.6836	0.1554/0.9727/1.3672	0.1440/0.9556/2.2217
Lake	0.1045/0.9761/1.1963	0.0882/0.9741/1.2939	0.0814/0.9727/1.3672	0.0656/0.9390/3.0518
Plane	0.3484/0.9810/0.9521	0.2872/0.9785/1.0742	0.2615/0.9673/1.6357	0.2293/0.9600/2.002
Baboon	0.0800/0.9863/0.6836	0.0635/0.9814/0.9277	0.0540/0.9756/1.2207	0.0454/0.9546/2.2705
Peppers	0.2760/0.9858/0.7080	0.2076/0.9780/1.0986	0.1786/0.9717/1.4160	0.1453/0.9590/2.0508
Scenery	0.0817/0.9863/0.6836	0.0598/0.9844/0.7813	0.0470/0.9814/0.9277	0.0287/0.9756/1.2207
Man	0.1871/0.9897/0.5127	0.1435/0.9893/0.5371	0.1165/0.9785/1.0742	0.0994/0.9600/2.0020
Bridge	0.0584/0.9961/0.1953	0.0461/0.9653/1.7334	0.0418/0.9580/2.0996	0.0369/0.9546/2.2705