Elements of information theory
Elements of information theory
Quantization-based watermarking performance improvement using host statistics: AWGN attack case
Proceedings of the 2004 workshop on Multimedia and security
Improved spread spectrum: a new modulation technique for robust watermarking
IEEE Transactions on Signal Processing
Scalar Costa scheme for information embedding
IEEE Transactions on Signal Processing
The zero-rate spread-spectrum watermarking game
IEEE Transactions on Signal Processing
IEEE Transactions on Information Theory
Nested linear/lattice codes for structured multiterminal binning
IEEE Transactions on Information Theory
Information-theoretic analysis of information hiding
IEEE Transactions on Information Theory
The parallel-Gaussian watermarking game
IEEE Transactions on Information Theory
Achieving 1/2 log (1+SNR) on the AWGN channel with lattice encoding and decoding
IEEE Transactions on Information Theory
Secure spread spectrum watermarking for multimedia
IEEE Transactions on Image Processing
A framework for evaluating the data-hiding capacity of image sources
IEEE Transactions on Image Processing
Robust audio watermarking using improved TS echo hiding
Digital Signal Processing
From weak to strong watermarking
TCC'07 Proceedings of the 4th conference on Theory of cryptography
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This paper revisits the problem of watermarking a Gaussian host, where the embedder and attacker are subject to mean-squared distortion constraints. The worst (nonadditive) attack and unconstrained capacity have been identified in previous work. Here we constrain the encoding function to lie in a given family of encoding functions — such as spread-spectrum or fixed-dimensional Quantization Index Modulation (QIM), with or without time-sharing, with or without external dithering. This gives rise to the notion of constrained capacity. Several such families are considered in this paper, and the one that is best under the worst attack is identified for each admissible value of the watermark-to-noise ratio (WNR) and the noise-to-host ratio (NHR). With suitable improvements, even scalar QIM can outperform any (improved) spread-spectrum scheme, for any value of WNR and NHR. The remaining gap to unconstrained capacity can be bridged using higher-dimensional lattice QIM.