NDLI: Near separability of optimal multiple description source codes

Content Provider	IEEE Xplore Digital Library
Author	Hanying Feng
Copyright Year	2005
Description	Author affiliation: Dept. of Electr. Eng., Stanford Univ., CA (Hanying Feng)
Abstract	In this paper, we first present new upper and lower bounds for the rate loss of multiple description source codes (MDSCs). For a two-description MDSC (2DSC), the rate loss of description i with distortion $D_{i}$ is $L_{i}$ = $R_{i}$ $R(Di ), i isin {1, 2}, where $R_{i}$ is the rate of the ith description; the joint rate loss associated with decoding the two descriptions together to achieve central distortion $D_{0}$ is L $_{0}$ = $R_{1}$ + $R_{2}$ - $R(D_{0}).$ We show that given any memoryless source with variance $sigma^{2}$ and mean squared error distortion measure, for any optimal 2DSC, (a) 0 les $L_{0}$ les 0.8802 if $D_{0}$ les $D_{1}$ + $D_{2}$ - $sigma^{2};$ (b) 0 les $L_{1},$ L2 les 0.4401 if $D_{0}$ ges $(1/D_{1}$ + 1/D2 - $1/sigma^{2})^{-1};$ (c) 0 les $L_{1},$ $L_{2}$ les 0.3802 and $R(max\{D_{1},$ $D_{2}\})$ - 1 les $L_{0}$ les $R(max\{D_{1},$ $D_{2}\})$ + 0.3802 otherwise. We also present a tighter bound on the distance between the El Gamal-Cover inner bound and the achievable region. In addition, these new bounds, which are easy to compute, inspire new designs of low-complexity near-optimal 2DSC. In essence, we demonstrate that any optimal 2DSC can be nearly separated into a multi-resolution source code and a traditional single-resolution code, and the resulting rate penalty for each description is less than 0.6901 bit/sample for general sources and less than 0.5 bit/sample for successively refinable sources
Starting Page	1798
Ending Page	1802
File Size	212281
Page Count	5
File Format	PDF
ISBN	0780391519
DOI	10.1109/ISIT.2005.1523655
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-09-04
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Performance loss Decoding Distortion measurement Postal services Loss measurement Compression algorithms Delay systems Rate distortion theory Rate-distortion Degradation
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
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7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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