NDLI: Joint watermarking and compression for Gaussian and Laplacian sources using uniform vector quantization

Content Provider	IEEE Xplore Digital Library
Author	Guixing Wu En-hui Yang Da-ke He
Copyright Year	2009
Description	Author affiliation: SlipStream Subsidiary, Research In Motion, 295, Phillip Street, Waterloo, ON, CA, N2L 3W8, USA (Guixing Wu; Da-ke He) \|\| Department of Electrical and Computer Engineering, University of Waterloo, 200 University AvenueWest, ON, CA, USA (En-hui Yang)
Abstract	Using fixed rate uniform vector quantization, in this paper, we consider how to design a joint watermarking and compression (JWC) system for Gaussian and Laplacian sources to maximize the robustness in the presence of additive Gaussian attacks under constraints on the compression rate and quantization distortion. Firstly, we construct vector quantizers shaped to match the multidimensional distribution of source signals. Then we scale codebooks corresponding to the vector quantizers to maximize the robustness of the watermarks against the additive Gaussian attacks. Simulation results show that the proposed scheme can achieve up to 0.92 dB distortion-to-noise ratio (DNR) gain over JWC schemes using uniform scalar quantization while maintaining the simplicity of implementation with uniform quantization.
Starting Page	1493
Ending Page	1496
File Size	141787
Page Count	4
File Format	PDF
ISBN	9781424423538
ISSN	15206149
DOI	10.1109/ICASSP.2009.4959878
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-04-19
Publisher Place	Taiwan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Watermarking Laplace equations Vector quantization Lattices Robustness Helium Rate distortion theory Performance gain Source coding Algorithm design and analysis robustness Joint watermarking and compression uniform vector quantization distortion-to-noise ratio
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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