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COMPLEXITY-OUTSOURCED LOW-LATENCY VIDEO ENCODING THROUGH FEEDBACK UNDER A SUM-RATE CONSTRAINT
KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.
KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.
2010 (English)In: 2010 IEEE INTERNATIONAL CONFERENCE ON IMAGE PROCESSING , 2010, 973-976 p.Conference paper, Published paper (Refereed)
Abstract [en]

In live video communication, the quality of the video that is encoded on a mobile device is more often than not constrained by the available computational resources. We address this problem by allowing the encoder to "outsource" the encoding complexity to the decoder through the use of feedback, under a sum-rate constraint comprising the weighted sum of the forward and feedback rates. Analysis of such a complexity-outsourced framework using an analytically tractable video model reveals that the feedback rate should be optimally adapted to the video motion characteristics. Application of our framework to real-world video sequences reveals the efficacy of our proposed architecture, with experimental results validating that substantial gains in PSNR are achievable over state-of-the-art fast-search algorithms at a comparable level of complexity. These gains are significant even for mobile live video communication applications over the Internet.

Place, publisher, year, edition, pages
2010. 973-976 p.
Series
IEEE International Conference on Image Processing ICIP, ISSN 1522-4880
Keyword [en]
Video coding, low complexity, feedback, motion compensation
National Category
Computer Vision and Robotics (Autonomous Systems)
Identifiers
URN: urn:nbn:se:kth:diva-32252ISI: 000287728001019Scopus ID: 2-s2.0-78651104120ISBN: 978-1-4244-7994-8 (print)OAI: oai:DiVA.org:kth-32252DiVA: diva2:411476
Conference
IEEE International Conference on Image Processing
Note
QC 20110418Available from: 2011-04-18 Created: 2011-04-11 Last updated: 2011-04-18Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
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More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
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  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf