SVD adapted DCT domain DC subband image watermarking against watermark ambiguity

Authors:
Erkan Yavuz;Ziya Telatar
Affiliations:
Communications Division, Aselsan Electronic Ind. Inc., Ankara, Turkey;Faculty of Eng., Dept. of EE, Ankara University, Besevler, Ankara, Turkey
Venue:
MRCS'06 Proceedings of the 2006 international conference on Multimedia Content Representation, Classification and Security
Year:
2006

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Abstract

In some Singular Value Decomposition (SVD) based watermarking techniques, singular values (SV) of the cover image are used to embed the SVs of the watermark image. In detection, singular vectors of the watermark image are used to construct the embedded watermark. A problem faced with this approach is to obtain the resultant watermark as the image whose singular vectors are used for restoring the watermark, namely, what is searched that is found. In this paper, we propose a Discrete Cosine Transform (DCT) DC subband watermarking technique in SVD domain against this ambiguity by embedding the singular vectors of the watermark image, too, as a control parameter. We give the experimental results of the proposed technique against some attacks.