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Proceedings Paper

Asymmetrically informed data-hiding optimization of achievable rate for Laplacian host
Author(s): J. E. Vila-Forcén; S. Voloshynovskiy; O. Koval; E. Topak; T. Pun
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Paper Abstract

In data-hiding the issue of the achievable rate maximization is closely related to the problem of host interference cancellation. The optimal host interference cancellation relies on the knowledge of the host realization and the channel statistics (the additive white Gaussian noise (AWGN) variance) available at the encoder a priori to the transmission. The latter assumption can be rarely met in practical situations. Contrarily to the Costa set-up where the encoder is optimized for the particular state of the independent and identically distributed (i.i.d.) Gaussian attacking channel, we address the problem of asymmetrically informed data-hiding optimal encoder design assuming that the host interference probability density function (pdf) is an i.i.d. Laplacian and the channel variance lies on some known interval. The presented experimental results advocate the advantages of the developed embedding strategy.

Paper Details

Date Published: 17 February 2006
PDF: 10 pages
Proc. SPIE 6072, Security, Steganography, and Watermarking of Multimedia Contents VIII, 60721F (17 February 2006); doi: 10.1117/12.643242
Show Author Affiliations
J. E. Vila-Forcén, Univ. of Geneva (Switzerland)
S. Voloshynovskiy, Univ. of Geneva (Switzerland)
O. Koval, Univ. of Geneva (Switzerland)
E. Topak, Univ. of Geneva (Switzerland)
T. Pun, Univ. of Geneva (Switzerland)

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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