NDLI: Research on the computation model of macro block coding based on the rate-distortion optimization

Content Provider	IEEE Xplore Digital Library
Author	Zhang Jian Yu Sheng-sheng Li Xuan Yuan
Copyright Year	2005
Description	Author affiliation: Huazhong Univ. of Sci. & Technol., Wuhan, China (Zhang Jian; Yu Sheng-sheng; Li Xuan Yuan)
Abstract	For the coding bit-rate control problem on the H.264 wireless video communication, on the basis of in-depth rate-distortion theory analysis, this paper researches current common rate distortion computation model, establish the relationship between the total distortion statistics measurement, the coding bit-rate measurement, the quantization parameter and the macro block intra frame refresh rate, and put forward new associated error control and code-rate control thinking. This method not only can acquire the optimal control point in the rate-distortion curve from the global perspective under the code error environment, but also can self-adaptive adjust the bit allocation and the quantization parameter under given network bandwidth. Furthermore, it can also implement intra frame macro block refresh at the same time and play important role in counteracting the channel code error to minimize the total distortion under certain bit-rated according to current network package loss probability, by which to establish the rate-distortion model of associated signal source channel and apply the rate-distortion optimized solution method to optimal allocate the bit-rate between the signal source coding and the channel coding. This method can provide valuable reference for the video robust coding transmission and resource allocation under the wireless environment.
Starting Page	1345
Ending Page	1349
File Size	1751518
Page Count	5
File Format	PDF
ISBN	0780395387
DOI	10.1109/ISCIT.2005.1567117
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-10-12
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless communication Statistical analysis Error analysis Computational modeling Current measurement Rate-distortion Communication system control Quantization Block codes Distortion measurement
Content Type	Text
Resource Type	Article

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