A multi-user based watermarking system with two-security-level keys

Authors:
Feng-Hsing Wang;Lakhmi Jain;Jeng-Shyang Pan
Affiliations:
School of Electrical and Information Eng., University of South Australia;School of Electrical and Information Eng., University of South Australia;Dept. Electronic Eng., National Kaohsiung University of Applied Sciences, Kaohsiung, Taiwan, R.O.C.
Venue:
IWDW'02 Proceedings of the 1st international conference on Digital watermarking
Year:
2002

Citing 4
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Abstract

This paper presents a new watermarking scheme to reduce the detection error probability through removal of local mean values of an original signal. It will be analytically proven that the removal process plays role in reducing the interference between an original signal and a watermark to be embedded. This is simply based on the orthogonality of the DC signal and the AC signal. As a result, the process improves the ability of the right detection. The proposed method is analytically and empirically evaluated with no attack as well as JPEG compression attacks.