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Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/3640

Title: Enabling error-resilient internet broadcasting using motion compensated spatial partitioning and packet FEC for the dirac video codec
Authors: Tun, M
Loo, K K
Cosmas, J
Keywords: Error-resilient coding
Coefficient partitioning
Wavelet
Dirac
Publication Date: 2008
Publisher: Academic Publisher
Citation: Journal of Multimedia. 3(2): 1-11, Jun 2008
Abstract: Video transmission over the wireless or wired network require protection from channel errors since compressed video bitstreams are very sensitive to transmission errors because of the use of predictive coding and variable length coding. In this paper, a simple, low complexity and patent free error-resilient coding is proposed. It is based upon the idea of using spatial partitioning on the motion compensated residual frame without employing the transform coefficient coding. The proposed scheme is intended for open source Dirac video codec in order to enable the codec to be used for Internet broadcasting. By partitioning the wavelet transform coefficients of the motion compensated residual frame into groups and independently processing each group using arithmetic coding and Forward Error Correction (FEC), robustness to transmission errors over the packet erasure wired network could be achieved. Using the Rate Compatibles Punctured Code (RCPC) and Turbo Code (TC) as the FEC, the proposed technique provides gracefully decreasing perceptual quality over packet loss rates up to 30%. The PSNR performance is much better when compared with the conventional data partitioning only methods. Simulation results show that the use of multiple partitioning of wavelet coefficient in Dirac can achieve up to 8 dB PSNR gain over its existing un-partitioned method.
URI: http://bura.brunel.ac.uk/handle/2438/3640
ISSN: 1796-2048
Appears in Collections:School of Engineering and Design Research papers
Electronic and Computer Engineering

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