Practical Distributed Video Coding in Packet Lossy Channels

Linbo, Qing; Masala, Enrico; Xiaohai, He

doi:10.1117/1.OE.52.7.071506

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Improving error resilience of video communications over packet lossy channels is an important and tough task. We present a framework to optimize the quality of video communications based on distributed video coding (DVC) in practical packet lossy network scenarios. The peculiar characteristics of DVC indeed require a number of adaptations to take full advantage of its intrinsic robustness when dealing with data losses of typical real packet networks. This work proposes a new packetization scheme, an investigation of the best error-correcting codes to use in a noisy environment, a practical rate-allocation mechanism, which minimizes decoder feedback, and an improved side-information generation and reconstruction function. Performance comparisons are presented with respect to a conventional packet video communication using H.264/advanced video coding (AVC). Although currently the H.264/AVC rate-distortion performance in case of no loss is better than state-of-the-art DVC schemes, under practical packet lossy conditions, the proposed techniques provide better performance with respect to an H.264/AVC-based system, especially at high packet loss rates. Thus the error resilience of the proposed DVC scheme is superior to the one provided by H.264/AVC, especially in the case of transmission over packet lossy networks.

Titolo:	Practical Distributed Video Coding in Packet Lossy Channels
Autori:	Linbo Qing MASALA, ENRICO Xiaohai He mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2013
Rivista:	OPTICAL ENGINEERING
Digital Object Identifier (DOI):	10.1117/1.OE.52.7.071506
Appare nelle tipologie:	1.1 Articolo in rivista

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http://hdl.handle.net/11583/2506302

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