Mathematical Problems in Engineering

Research Article

Texture Directionality-Based Digital Watermarking in Nonsubsample Shearlet Domain

Table 3

Experimental results of invisibility.
Lena SSIM = 0.9997Snow SSIM = 0.9960Snow2 SSIM = 0.9998Plane SSIM = 0.9990
NC/BER = 0.9961/0.1953NC/BER = 0.9990/0.0488NC/BER = 0.9990/0.0488NC/BER = 0.9996/0.0268
Baboon SSIM = 0.9998Woman SSIM = 0.9995Lake SSIM = 0.9998Crowd SSIM = 0.9996
NC/BER = 0.9995/0.0244NC/BER = 1.0000/0.0000NC/BER = 1.0000/0.0000NC/BER = 0.9971/0.1465
Peppers SSIM = 0.9998Scenery SSIM = 0.9997Man SSIM = 0.9990Bridge SSIM = 0.9997
NC/BER=0.9996/0.0268NC/BER=0.9990/0.0488NC/BER=0.9985/0.0732NC/BER=0.9980/0.0977