Digital Watermark Based on W-SVD Method in Copyright Protection of E-Service
Xufang Li, Hu Min · Physics Procedia · 2012
In order to solve digital products copyright problem, this paper uses the good mathematical properties of singular value decomposition and combines with two-dimensional wavelet decomposition, chaotic Logistic sequence and template scrambling to product a high security digital watermark. The statistic analysis indicates this method has good security and robust, which can be used widely in the e-service area.