Watermark detection rate and outliers

Hyoung Joong Kim; Taehoon Kim; In Kwon Yeo

doi:10.1117/12.507925

28 January 2004 Watermark detection rate and outliers

Hyoung Joong Kim, Taehoon Kim, In Kwon Yeo

Proceedings Volume 5208, Mathematics of Data/Image Coding, Compression, and Encryption VI, with Applications; (2004) https://doi.org/10.1117/12.507925
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

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.

Citation Download Citation

Hyoung Joong Kim, Taehoon Kim, and In Kwon Yeo "Watermark detection rate and outliers", Proc. SPIE 5208, Mathematics of Data/Image Coding, Compression, and Encryption VI, with Applications, (28 January 2004); https://doi.org/10.1117/12.507925

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