A Multiple Watermarking Scheme with Embedding-Order Identifying Feature

Digital watermarking is a valid solution to protect copyright of owners. But there is still a difficult problem of copyright disputes as the IBM attack or the interpretation attack when multiple watermarks of multiple authors appear in the same digital media. We provide a new feasible solution, in which a multiple watermarking scheme using complete complementary code based on the spread spectrum is adopted, and the scaling parameters are used to identify embedding-order of different users. The independency of multiple watermarks can also be used to protect privacy of different users.