Detection in quantization-based watermarking: performance and security issues

Luis Perez-Freire; Pedro Comesana-Alfaro; Fernando Perez-Gonzalez

doi:10.1117/12.587730

21 March 2005 Detection in quantization-based watermarking: performance and security issues

Luis Perez-Freire, Pedro Comesana-Alfaro, Fernando Perez-Gonzalez

Proceedings Volume 5681, Security, Steganography, and Watermarking of Multimedia Contents VII; (2005) https://doi.org/10.1117/12.587730
Event: Electronic Imaging 2005, 2005, San Jose, California, United States

Abstract

In this paper, a novel method for detection in quantization-based watermarking is introduced. This method basically works by quantizing a projection of the host signal onto a subspace of smaller dimensionality. A theoretical performance analysis under AWGN and fixed gain attacks is carried out, showing great improvements over traditional spread-spectrum-based methods operating under the same conditions of embedding distortion and attacking noise. A security analysis for oracle-like attacks is also accomplished, proposing a sensitivity attack suited to quantization-based methods for the first time in the literature, and showing a trade-off between security level and performance; anyway, this new method offers significant improvements in security, once again, over spread-spectrum-based methods facing the same kind of attacks.

Citation Download Citation

Luis Perez-Freire, Pedro Comesana-Alfaro, and Fernando Perez-Gonzalez "Detection in quantization-based watermarking: performance and security issues", Proc. SPIE 5681, Security, Steganography, and Watermarking of Multimedia Contents VII, (21 March 2005); https://doi.org/10.1117/12.587730

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