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Proceedings Paper

Color image watermarking using channel-state knowledge
Author(s): Josep Vidal; Maribel Madueno; Elisa Sayrol
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Paper Abstract

This work concentrates on the problem of watermarking embedding and blind optimum detection in full-frame DCT domain using channel-state knowledge concepts. Minimum length sequences are used to embed the watermark information in the color components. Each chip of the sequence is inserted in a random-like fashion in those coefficients that ensure imperceptibility, robustness and a very low probability of error in detection. As it will be shown the power of the watermark has to be distributed among the symbols not only considering imperceptibility but also to improve the detection process. Furthermore, two solutions are proposed to improve the robustness against cropping operations.

Paper Details

Date Published: 29 April 2002
PDF: 8 pages
Proc. SPIE 4675, Security and Watermarking of Multimedia Contents IV, (29 April 2002); doi: 10.1117/12.465278
Show Author Affiliations
Josep Vidal, Univ. Politecnica de Catalunya (Spain)
Maribel Madueno, Univ. Politecnica de Catalunya (Spain)
Elisa Sayrol, Univ. Politecnica de Catalunya (Spain)


Published in SPIE Proceedings Vol. 4675:
Security and Watermarking of Multimedia Contents IV
Edward J. Delp; Ping Wah Wong, Editor(s)

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