Practical distributed video coding in packet lossy channels

Linbo Qing; Enrico Masala; Xiaohai He

doi:10.1117/1.OE.52.7.071506

25 March 2013 Practical distributed video coding in packet lossy channels

Linbo Qing, Enrico Masala, Xiaohai He

Author Affiliations +

Optical Engineering, Vol. 52, Issue 7, 071506 (March 2013). https://doi.org/10.1117/1.OE.52.7.071506

Abstract

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.

Citation Download Citation

Linbo Qing, Enrico Masala, and Xiaohai He "Practical distributed video coding in packet lossy channels," Optical Engineering 52(7), 071506 (25 March 2013). https://doi.org/10.1117/1.OE.52.7.071506

Published: 25 March 2013

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