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Proceedings Paper

Watermark detection rate and outliers
Author(s): Hyoung Joong Kim; Taehoon Kim; In Kwon Yeo
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Paper Abstract

Spread-spectrum watermarking scheme adds random noise w into the host signal x to generate watermarked signal s. Blind detector computes inner product or its variants and decides embedded bits by its sign of the inner product. Such detection method is not robust due to high false-positive or false-negative rate. This paper introduces a novel method to reduce detection errors considerably by excluding outliers in the signal. Stable and robust definition of outlier is adopted. Informed watermarking scheme for spread-spectrum is exploited to reduce false-positive and false-negative errors. Such detectors can also enhance detection rate in other watermarking schemes.

Paper Details

Date Published: 28 January 2004
PDF: 9 pages
Proc. SPIE 5208, Mathematics of Data/Image Coding, Compression, and Encryption VI, with Applications, (28 January 2004); doi: 10.1117/12.507925
Show Author Affiliations
Hyoung Joong Kim, Kangwon National Univ. (South Korea)
Taehoon Kim, Kangwon National Univ. (South Korea)
In Kwon Yeo, Chonbuk National Univ. (South Korea)


Published in SPIE Proceedings Vol. 5208:
Mathematics of Data/Image Coding, Compression, and Encryption VI, with Applications
Mark S. Schmalz, Editor(s)

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