| Optimal source rate control for adapting VBR video over CBR channels |
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| 作者姓名： | Chunwen LI Peng ZHU |
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| 作者单位： | [1]Department of Automation, Tsinghua University, Beijing 100084, China [2]Key Laboratory of Informationed Electric Apparatus, Zhengzhou Henan 450002, China |
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| 摘 要： | In this paper we discuss the source rate control problem of adapting variable bit-rate （VBR） compressed video over constant bit-rate （CBR） channels. Firstly we formulate it as an optimal control problem of a discrete linear system with state and control constraints. Then we apply the discrete maximum principle to get the optimal solution. Experimental results are given in the end. Compared with traditional algorithms, the proposed algorithm is suitable for the coder with continuous output rates, and can achieve the better solution. Our algorithm can be used in both off-line and on-line coding.
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| 关 键 词： | 最优控制 比率控制 VBR视频 CBR信道 |
| 收稿时间： | 2005-04-21 |
| 修稿时间： | 2005-09-19 |
Optimal source rate control for adapting VBR video over CBR channels |
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| Chunwen LI,Peng ZHU.Optimal source rate control for adapting VBR video over CBR channels[J].Journal of Control Theory and Applications,2006,4(2):111-113. |
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| Authors: | Chunwen LI Peng ZHU |
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| Affiliation: | 1. Department of Automation, Tsinghua University, Beijing 100084, China;Key Laboratory of Informationed Electric Apparatus, Zhengzhou Henan 450002, China
2. Department of Automation, Tsinghua University, Beijing 100084, China |
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| Abstract: | In this paper we discuss the source rate control problem of adapting variable bit-rate (VBR) compressed video over constant bit-rate (CBR) channels. Firstly we formulate it as an optimal control problem of a discrete linear system with state and control constraints. Then we apply the discrete maximum principle to get the optimal solution. Experimental results are given in the end. Compared with traditional algorithms, the proposed algorithm is suitable for the coder with continuous output rates, and can achieve the better solution. Our algorithm can be used in both off-line and on-line coding. |
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| Keywords: | Optimal control Rate control VBR video CBR channel |
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