Digital Watermark Algorithm Analysis Based on the FRFT
Zhongze Tang · Science Technology and Engineering · 2010
With the rapid development of the multimedia technology and Internet-based,copyright protection multimedia information of digital watermarking has been to a hotspot.Which digital watermark is an effective way of a copyright protection and information security.Analysis based on fractional Fourier transform (FRFT) multiplicative watermarking algorithm,simulation results show that it has a good safety and invisibility,not only very good resistance to commonly used signal processing,and operations on the geometric attacks also has robustness.