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IEEE TRANSACTIONS ON MULTIMEDIA, VOL. 6, NO. 2, APRIL 2004 249 WynerZiv Coding of Video: An Error-Resilient
 

Summary: IEEE TRANSACTIONS ON MULTIMEDIA, VOL. 6, NO. 2, APRIL 2004 249
Wyner­Ziv Coding of Video: An Error-Resilient
Compression Framework
Anshul Sehgal, Ashish Jagmohan, and Narendra Ahuja, Fellow, IEEE
Abstract--This paper addresses the problem of video coding in
a joint source-channel setting. In particular, we propose a video en-
coding algorithm that prevents the indefinite propagation of errors
in predictively encoded video--a problem that has received consid-
erable attention over the last decade. This is accomplished by pe-
riodically transmitting a small amount of additional information,
termed coset information, to the decoder, as opposed to the popular
approach of periodic insertion of intra-coded frames. Perhaps sur-
prisingly, the coset information is capable of correcting for errors,
without the encoder having a precise knowledge of the lost packets
that resulted in the errors. In the context of real-time transmission,
the proposed approach entails a minimal loss in performance over
conventional encoding in the absence of channel losses, while simul-
taneously allowing error recovery in the event of channel losses. We
demonstrate the efficacy of the proposed approach through exper-
imental evaluation. In particular, the performance of the proposed

  

Source: Ahuja, Narendra - Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign

 

Collections: Computer Technologies and Information Sciences; Engineering