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Technical Program

Paper Detail

Paper:	IMDSP-P2.11
Session:	Authentication and Watermarking
Time:	Tuesday, May 16, 14:00 - 16:00
Presentation:	Poster
Topic:	Image and Multidimensional Signal Processing: Still Image Coding
Title:	Indexing Lattice Vectors in a Joint Watermarking and Compression Scheme
Authors:	Ludovic Guillemot, Jean-Marie Moureaux, CRAN-CNRS UMR 7039, France
Abstract:	The problem of the design of a joint watermarking and compression (JWC) scheme allowing an efficient variable rate coding is addressed here. We have proposed in previous works a method, called modulated lattice vector quantization (MLVQ), based on dither modulation and lattice vector quantization (LVQ) and have shown experimentally its good performances. In this paper, we first show theoretically that the use of a multidimensional lattice codebook must be privileged in JWC. To take benefit from this property, an indexing method dedicated to the MLVQ codebook is proposed. It is based on the use of the geometrical properties of the MLVQ codebook.