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Forced intra refreshment method based on the propagation model of uncertainties in the reference pixels for H.264 streaming service
- Source :
-
Journal of Visual Communication & Image Representation . Jun2006, Vol. 17 Issue 3, p623-629. 7p. - Publication Year :
- 2006
-
Abstract
- Abstract: 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 85.3kbps encoding of QCIF 30 frames/s sequences show that the proposed intra-refreshment scheme improves the average quality of decoded pictures by 1.36–0.47dB compared with the conventional periodic GOB refreshment algorithms. [Copyright &y& Elsevier]
- Subjects :
- *ALGORITHMS
*RADIO wave propagation
*SIMULATION methods & models
*PICTURES
Subjects
Details
- Language :
- English
- ISSN :
- 10473203
- Volume :
- 17
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Journal of Visual Communication & Image Representation
- Publication Type :
- Academic Journal
- Accession number :
- 20830908
- Full Text :
- https://doi.org/10.1016/j.jvcir.2005.08.001