| 多参考运动补偿预测中的误码传播和编码效率 |
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| 引用本文： | 郁杨,朱雪龙.多参考运动补偿预测中的误码传播和编码效率[J].电子学报,2001,29(Z1):1863-1867. |
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| 作者姓名： | 郁杨 朱雪龙 |
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| 作者单位： | 清华大学电子工程系, 北京, l00084 |
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| 摘 要： | 视频信号在基于运动补偿预测的混合编码后,在不可靠信道中传输时会遇到严重的误码传播问题.本文从理论上分析了一种广义的运动补偿预测技术--多参考运动补偿预测的误码传播和编码效率,得到了由误码传播引起的失真和编码效率的理论极限,并给出了某些假设条件下理论极限的值.通过理论分析和对几种特定的基于多参考运动补偿预测的混合编码方案在INTERNET丢包环境中的仿真,我们发现采用多参考运动补偿预测可以同时减小误码传播失真和提高编码效率.
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| 关 键 词： | 多参考运动补偿预测 误码传播 编码效率 |
| 文章编号： | 0372-2112(2001)12A-1863-05 |
| 收稿时间： | 2000-07-18 |
| 修稿时间： | 2000年7月18日 |
Propagation Distortion and Coding Efficiency in Multi-hypothesis Motion Compensated Prediction |
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| YU Yang,ZHU Xue-long.Propagation Distortion and Coding Efficiency in Multi-hypothesis Motion Compensated Prediction[J].Acta Electronica Sinica,2001,29(Z1):1863-1867. |
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| Authors: | YU Yang ZHU Xue-long |
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| Affiliation: | Department of Electronics Engineering, TsingHua University, Beijing 100084, China |
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| Abstract: | When hybrid coded video with motion compensated prediction(MCP) is transmitted over unreliable channels there exists the annoying problem of error propagation.In this paper we analyze the performance of coding efficiency and the distortion caused by propagation error,i.e.,propagation distortion,in multi hypothesis MCP,and give its theoretical performance limit.Then the numerical results under some assumptions are given.Both the theoretical performance and the simulation results of some specific multi-hypothesis MCP schemes under the typical packet loss environment of Internet show that with multi hypothesis MCP both the propagation distortion can be attenuated and the coding efficiency can be improved. |
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| Keywords: | multi-hypothesis motion compensated prediction propagation distortion coding efficiency |
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