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Proceedings Paper

Synchronous backward error tracking algorithm for H.264 video coding
Author(s): Ming-Kuang Tsai; Tien-Hsu Lee; Jong-Tzy Wang; Pao-Chi Chang
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Paper Abstract

The objective of this paper is to develop a robust error-resilient algorithm, called the Synchronous Backward Error Tracking (SBET), to completely terminate the error propagation effects in the error-prone environment for H.264 video coding. The motivation is that if the state of the decoder is available to the encoder, i.e., the state of the encoder can synchronize to the state of the decoder, the effect of error propagation can be entirely terminated because all predictions are based on the same references. Therefore, we assume that a feedback channel is available and the encoder can be aware of the decoder's error concealment by any external means. The pixel-based Precise Backward Error Tracking (PBET) is modified and utilized to track the error locations and reconstruct the state of the decoder in the encoder. The proposed method only involves memory access, simple addition and multiplication operations for the error-contaminated pixels to achieve encoder-decoder synchronization. By observing simulation results, the rate-distortion performance of the proposed algorithm is always better than that of the conventional algorithms. Specifically, SBET outperforms PBET up to 1.21 dB under 3% slice error rate for the QCIF format Foreman sequence. In addition, instead of forced INTRA refreshing, the phenomenon of burst bit rate can be avoided.

Paper Details

Date Published: 14 March 2005
PDF: 8 pages
Proc. SPIE 5685, Image and Video Communications and Processing 2005, (14 March 2005); doi: 10.1117/12.590503
Show Author Affiliations
Ming-Kuang Tsai, National Central Univ. (Taiwan)
Tien-Hsu Lee, National Central Univ. (Taiwan)
Jong-Tzy Wang, Jin Wen Institute of Technology (Taiwan)
Pao-Chi Chang, National Central Univ. (Taiwan)

Published in SPIE Proceedings Vol. 5685:
Image and Video Communications and Processing 2005
Amir Said; John G. Apostolopoulos, Editor(s)

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