Enhanced spatially interleaved DVC using diversity and selective feedback

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

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Abstract

Systems with cheap/simple/power efficient encoders but complex decoders make applications such as low cost, low power remote sensors practical. Bandwidth considerations however are still an issue and compression efficiency has to remain high. In this paper, we present a distributed video codec (DVC) that we are developing with the aim of achieving such a low power paradigm at the cost of only a small compression performance deficit relative to the current state of the art, H.264. The proposed system employs spatial interleaving of KEY and Wyner-Ziv data which allows efficient side information (SI) generation through block-based error concealment, a Gray code that increases the accuracy of bit probability estimation, and a diversity scheme that produces more reliable results by exploiting multiple SI generated data. Simulation results show an improvement of the proposed scheme over H.264 intra coding of up to 1.5 dB. We additionally propose two mechanisms for selective parity bit feedback requests that can further reduce the WZ bitrate by up to 15%
Translated title of the contributionEnhanced spatially interleaved DVC using diversity and selective feedback
Original languageEnglish
Title of host publicationIEEE International Conference on Acoustics, Speech and Signal Processing, 2009 (ICASSP 2009)
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages717 - 720
Number of pages4
ISBN (Print)9781424423538
DOIs
Publication statusPublished - Apr 2009
Event2009 IEEE International Conference on Acoustics, Speech, and Signal Processing - Taipei, Taiwan
Duration: 19 Apr 200924 Apr 2009

Publication series

Name
ISSN (Print)15206149

Conference

Conference2009 IEEE International Conference on Acoustics, Speech, and Signal Processing
Abbreviated titleICASSP '09
CountryTaiwan
CityTaipei
Period19/04/0924/04/09

Bibliographical note

Rose publication type: Conference contribution

Additional information: With accompanying conference presentation

Sponsorship: This work was undertaken as part of EPSRC grant EP/E065538

Terms of use: Copyright © 2009 IEEE. Reprinted from IEEE International Conference on Acoustics, Speech and Signal Processing, 2009 (ICASSP 2009).

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Keywords

  • DVC
  • video coding
  • multi-hypothesis

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