COMPLEXITY-OUTSOURCED LOW-LATENCY VIDEO ENCODING THROUGH FEEDBACK UNDER A SUM-RATE CONSTRAINT
2010 (English)In: 2010 IEEE INTERNATIONAL CONFERENCE ON IMAGE PROCESSING , 2010, 973-976 p.Conference paper (Refereed)
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.
, IEEE International Conference on Image Processing ICIP, ISSN 1522-4880
Video coding, low complexity, feedback, motion compensation
Computer Vision and Robotics (Autonomous Systems)
IdentifiersURN: urn:nbn:se:kth:diva-32252ISI: 000287728001019ScopusID: 2-s2.0-78651104120ISBN: 978-1-4244-7994-8OAI: oai:DiVA.org:kth-32252DiVA: diva2:411476
IEEE International Conference on Image Processing
QC 201104182011-04-182011-04-112011-04-18Bibliographically approved