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Time-Frequency Signal Synthesis and Its Application in Multimedia Watermark Detection

EURASIP Journal on Advances in Signal Processing volume 2006, Article number: 086712 (2006) Cite this article

Abstract

We propose a novel approach to detect the watermark message embedded in images under the form of a linear frequency modulated chirp. Localization of several time-frequency distributions (TFDs) is studied for different frequency modulated signals under various noise conditions. Smoothed pseudo-Wigner-Ville distribution (SPWVD) is chosen and applied to detect and recover the corrupted image watermark bits at the receiver. The synthesized watermark message is compared with the referenced one at the transmitter as a detection evaluation scheme. The correlation coefficient between the synthesized and the referenced chirps reaches 0.9 or above for a maximum bit error rate of 15% under intentional and nonintentional attacks. The method provides satisfactory result for detection of image watermark messages modulated as chirp signal and could be a potential tool in multimedia security applications.

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Authors and Affiliations

  1. Department of Electrical and Computer Engineering, Ryerson University, Toronto, ON, Canada, M5B 2K3

    Lam Le & Sridhar Krishnan

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  1. Lam Le
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  2. Sridhar Krishnan
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Correspondence to Lam Le.

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Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License ( https://creativecommons.org/licenses/by/2.0 ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Le, L., Krishnan, S. Time-Frequency Signal Synthesis and Its Application in Multimedia Watermark Detection. EURASIP J. Adv. Signal Process. 2006, 086712 (2006). https://doi.org/10.1155/ASP/2006/86712

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  • DOI: https://doi.org/10.1155/ASP/2006/86712

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