Application of the spread spectrum to the digital wartermaking
Hua Ding · Applied science and technology · 2005
As a new technique applying to protecting the copyright of digital products,the digital watermark technique has drawn extensive attention. For the sake of improving the security,this paper applys the spread spectrum technique to the digital wartermarking,analyzing its theory and its excellency. Finally, experimental results have proved that the method is robust enough to some image degradation process such as cropping, JPEG compression and noise etc. So it is effective.