Forced intra refreshment method based on the propagation model of uncertainties in the reference pixels for H.264 streaming service
✍ Scribed by Dong Wook Kang; Ki-Doo Kim; Kyeong Hoon Jung; Seung Jun Lee
- Publisher
- Elsevier Science
- Year
- 2006
- Tongue
- English
- Weight
- 149 KB
- Volume
- 17
- Category
- Article
- ISSN
- 1047-3203
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✦ Synopsis
In this paper, we propose a novel propagation model for the uncertainty in the reference pixels and the model-based improved intra-refreshment method for the H.264 streaming service through the error-prone channel. The proposed intra-refreshment algorithm can incorporate with the SAD-based low-complexity mode decision as well as the RD-optimizing high-complexity mode decision. Simulations on RTP/IP transmission over mobile channels with the 42.7 and 85.3 kbps encoding of QCIF 30 frames/s sequences show that the proposed intra-refreshment scheme improves the average quality of decoded pictures by 1.36-0.47 dB compared with the conventional periodic GOB refreshment algorithms.