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Proceedings Paper

High-rate quantization data hiding robust to arbitrary linear filtering attacks
Author(s): Fernando Pérez-González; Carlos Mosquera; Marcos Alvarez; Reginald Lagendijk
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Paper Abstract

Rational Dither Modulation (RDM) is a high-rate data hiding method invariant to gain attacks. We propose an extension of RDM to construct a scheme that is robust to arbitrary linear time-invariant filtering attacks, as opposed to standard Dither Modulation (DM) which we show to be extremely sensitive to those attacks. The novel algorithm, named Discrete Fourier Transform RDM (DFT-RDM) basically works in the DFT domain, applying the RDM core on each frequency channel. We illustrate the feasibility of DFT-RDM by passing the watermarked signal through an implementation of a graphic equalizer: the average error probability is small enough to justify the feasibility of adding a coding with interleaving layer to DFT-RDM. Two easily implementable improvements are discussed: windowing and spreading. In particular, the latter is shown to lead to very large gains.

Paper Details

Date Published: 16 February 2006
PDF: 12 pages
Proc. SPIE 6072, Security, Steganography, and Watermarking of Multimedia Contents VIII, 60720C (16 February 2006); doi: 10.1117/12.642750
Show Author Affiliations
Fernando Pérez-González, Univ. de Vigo (Spain)
Carlos Mosquera, Univ. de Vigo (Spain)
Marcos Alvarez, Univ. de Vigo (Spain)
Reginald Lagendijk, Delft Univ. of Technology (Netherlands)

Published in SPIE Proceedings Vol. 6072:
Security, Steganography, and Watermarking of Multimedia Contents VIII
Edward J. Delp III; Ping Wah Wong, Editor(s)

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