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Proceedings Paper

Evaluating the performance of ST-DM watermarking in nonadditive channels
Author(s): Mauro Barni; Attilio Borello; Franco Bartolini; Alessandro Piva
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Paper Abstract

In this paper, the performance of ST-DM watermarking in presence of two categories of non additive attacks, such as the gain attack plus noise addition, and the quantization attack, are evaluated. The work has been developed by assuming that the host features are independent and identically distributed Gaussian random variables, and that a minimum distance criterion is used to decode the embedded information. The theoretical bit error probabilities are derived in closed form, thus permitting to evaluate the impact of the considered attacks on the watermark at a theoretical level. The analysis is validated by means of extensive Monte Carlo simulations. Moreover, Monte Carlo simulations permitted to abandon the hypothesis of normally distributed host features, in favor of more realistic models based on a Laplacian or a Generalized Gaussian pdf. The overall result of our analysis is that ST-DM exhibits excellent performance in all cases with the only noticeable exception of the gain attack.

Paper Details

Date Published: 22 June 2004
PDF: 11 pages
Proc. SPIE 5306, Security, Steganography, and Watermarking of Multimedia Contents VI, (22 June 2004); doi: 10.1117/12.524335
Show Author Affiliations
Mauro Barni, Univ. degli Studi di Siena (Italy)
Attilio Borello, Univ. degli Studi di Siena (Italy)
Franco Bartolini, Univ. degli Studi di Firenze (Italy)
Alessandro Piva, Consorzio Nazionale Interuniversitario delle Telecomunicazioni (Italy)

Published in SPIE Proceedings Vol. 5306:
Security, Steganography, and Watermarking of Multimedia Contents VI
Edward J. Delp III; Ping W. Wong, Editor(s)

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