The robustness of a watermarking scheme based on the discrete fractional random transform has been investigated and demonstrated to be superior to those based on the discrete cosine transform, discrete fractional Fourier transform, and discrete Fourier transform. The spectrum distribution of the discrete fractional random transform is random and uniform, which guarantees good robustness. In addition, the discrete fractional random transform itself can serve as a secret key, and can provide high ...
R. Aghicha, G. Behere, P. Patil, and P. Harne. International Journal on Recent and Innovation Trends in Computing and Communication, 3 (3):
962--964(March 2015)