Optimum Perfect Steganography of Memoryless Sources as a Rate-Distortion Problem
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|Title:||Optimum Perfect Steganography of Memoryless Sources as a Rate-Distortion Problem||Authors:||Balado, Félix
|Permanent link:||http://hdl.handle.net/10197/5065||Date:||20-Nov-2013||Abstract:||Slepian’s variant I permutation coding has been recently shown to be a fundamental steganographic tool, as it implements optimum perfect steganography of memoryless sources. Although real host signals are not memoryless, a decorrelating energy-preserving transform can always be applied before a method that assumes a memoryless source, as is usually done in the dual problem of source coding. A further constraint is needed in practice: the information-carrying signal must be close to the host, according to some distance measure. Thus steganography of memoryless sources using permutation coding is a rate-distortion problem. Here we delve deeper in the study of the embedding distortion of permutation coding, and we show that the rate-distortion tradeoff for partitioned permutation coding is nearoptimum according to the Gel’fand and Pinsker capacity formula.||Funding Details:||Science Foundation Ireland||Type of material:||Conference Publication||Publisher:||IEEE||Copyright (published version):||2013, IEEE||Keywords:||Steganography;Decorrelation;Distortion;Memoryless systems;Rate distortion theory;Source coding||DOI:||10.1109/WIFS.2013.6707814||Language:||en||Status of Item:||Peer reviewed||Conference Details:||IEEE International Workshop on Information Forensics and Security (WIFS), Guangzhou, China, November 18-21, 2013|
|Appears in Collections:||Computer Science Research Collection|
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