On Joint Compression and Information Embedding When Watermarks and Covertexts Are Correlated

摘要：

A joint compression and public digital watermarking system with correlated watermark source and covertext source (M, S) is investigated in this paper. More specifically,for a given distortion level D between S and a watermarked signal X and a given compression rate Rc for X, the watermark source M can be fully recovered with high probability at the end of a public watermark decoder after the watermarked signal is disturbed by a fixed memoryless attack channel p(y|x) if and only if H(M) ≤ maxp(x,u|m,s) minRc-I(M, S; U, X) +I(M; U, Y), I(U; Y) -I(U; M, S)+I(M; U, Y), where the maximization is taken over all auxiliary random variables U (with finite alphabetd) and X jointly distributed with (M, S, X, Y)according to p(m, s, u, x, y) =p(m, s)p(u, x|m, s)p(y|x) such that Ed(S, X) ≤ D.

作者: Wei Sun En-hui Yang

作者单位: Department of Electrical and Computer Engineering University of Waterloo, 200 University Ave.W.Waterloo, Ontario, Canada,N2L 3G1

会议类型: 国际会议

会议名称: 2006年IEEE信息理论国际会议(Proceedings of 2006 IEEE Information Theory Workshop ITW06)

会议地点: 成都

会议语种:英文

页码: 298-302

在线出版日期: 2006-10-22（万方平台首次上网日期，不代表论文的发表时间）