ECC video : an active second error control approach for error resilience in video coding
Du, Bing Bing (2003) ECC video : an active second error control approach for error resilience in video coding. PhD thesis, Queensland University of Technology.
To support video communication over mobile environments has been one of the objectives of many engineers of telecommunication networks and it has become a basic requirement of a third generation of mobile communication systems. This dissertation explores the possibility of optimizing the utilization of shared scarce radio channels for live video transmission over a GSM (Global System for Mobile telecommunications) network and realizing error resilient video communication in unfavorable channel conditions, especially in mobile radio channels.
The main contribution describes the adoption of a SEC (Second Error Correction) approach using ECC (Error Correction Coding) based on a Punctured Convolutional Coding scheme, to cope with residual errors at the application layer and enhance the error resilience of a compressed video bitstream. The approach is developed further for improved performance in different circumstances, with some additional enhancements involving Intra Frame Relay and Interleaving, and the combination of the approach with Packetization.
Simulation results of applying the various techniques to test video sequences Akiyo and Salesman are presented and analyzed for performance comparisons with conventional video coding standard. The proposed approach shows consistent improvements under these conditions. For instance, to cope with random residual errors, the simulation results show that when the residual BER (Bit Error Rate) reaches 10-4, the video output reconstructed from a video bitstream protected using the standard resynchronization approach is of unacceptable quality, while the proposed scheme can deliver a video output which is absolutely error free in a more efficient way. When the residual BER reaches 10-3, the standard approach fails to deliver a recognizable video output, while the SEC scheme can still correct all the residual errors with modest bit rate increase. In bursty residual error conditions, the proposed scheme also outperforms the resynchronization approach. Future works to extend the scope and applicability of the research are suggested in the last chapter of the thesis.
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|Item Type:||QUT Thesis (PhD)|
|Keywords:||ECC video, active second error control, error resilience, video coding, video communication, mobile environments, GSM, movile radio channels, second error correction, error correction coding, punctured convolutional, bit error rate|
|Department:||Built Environment and Engineering|
|Institution:||Queensland University of Technology|
|Copyright Owner:||Copyright Bing Bing Du|
|Deposited On:||03 Dec 2008 03:51|
|Last Modified:||28 Oct 2011 19:39|
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