Texture Directionality-Based Digital Watermarking in Nonsubsample Shearlet Domain

Table 8

Experimental results for the filtering attack.

Test image	Average filtering; (); SSIM/NC/BER	Average filtering; (); SSIM/NC/BER	Median filtering; (); SSIM/NC/BER	Median filtering; (); SSIM/NC/BER
Lena	0.8963/0.9897/0.5127	0.6256/0.9888/0.5615	0.9171/0.9893/0.5371	0.8560/0.9927/0.3662
Snow	0.7918/0.9937/0.3174	0.5378/0.9849/0.7568	0.8142/0.9946/0.2686	0.7938/0.9854/0.7324
Snow2	0.8140/0.9956/0.2197	0.5604/0.9795/1.0254	0.8022/0.9985/0.0732	0.7287/0.9976/0.1221
Crowd	0.9528/0.9517/2.4170	0.6273/0.9517/2.4170	0.9581/0.9717/1.4160	0.8739/0.9937/0.3174
Woman	0.8149/0.9888/0.5615	0.5439/0.9878/0.6104	0.8450/0.9946/0.2686	0.9803/0.9951/0.2441
Lake	0.5161/0.9604/1.9775	0.3495/0.9580/2.0996	0.6287/0.9907/0.4639	0.6084/0.9917/0.4150
Plane	0.9335/0.9990/0.0488	0.6509/0.9736/1.3184	0.9391/0.9985/0.0732	0.8734/0.9619/1.9043
Baboon	0.5440/0.9966/0.1709	0.3143/0.9858/0.7080	0.6062/0.9971/0.1465	0.4693/0.9951/0.2441
Peppers	0.7599/0.9858/0.7080	0.5429/0.9795/1.0254	0.8605/0.9941/0.2930	0.8082/0.9937/0.3174
Scenery	0.4698/0.9600/2.0020	0.2828/0.9590/2.0508	0.5736/0.9897/0.5127	0.4622/0.9727/1.3672
Man	0.8802/0.9834/0.8301	0.5707/0.9785/1.0742	0.8957/0.9946/0.2686	0.7916/0.9546/2.2705
Bridge	0.8086/0.9771/1.1475	0.4776/0.9717/1.4160	0.8205/0.9937/0.3174	0.6796/0.9907/0.4639