| 一种改进的虚拟相关信道参数估计方法 |
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| 引用本文： | 代明鑫,宋兴华. 一种改进的虚拟相关信道参数估计方法[J]. 光电技术应用, 2009, 24(5): 62-66 |
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| 作者姓名： | 代明鑫 宋兴华 |
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| 作者单位： | 北京航天飞行控制中心通信总站,北京,100120;北京航天飞行控制中心通信总站,北京,100120 |
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| 摘 要： | 分布式视频编码框架中,准确地估计WZ帧与辅助边信息之间的统计特性,也即对它们之间的虚拟＂相关信道＂准确设计模型,并估计其参数,对于提高编码压缩效率,进而准确进行码率控制十分重要.讨论了模拟信道的模型选取和参数优化,研究了视频序列中常用的Laplace模型和Gauss模型,提出了一种带校正系数的虚拟相关信道参数估计方法,验证了虚拟相关信道更接近残差数据的真实分布.
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| 关 键 词： | 分布式视频编码 Wyner-Ziv编码 虚拟相关信道 边信息 |
An Improved Parameters Estimated Method for Virtual Correlative Channel |
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| DAI Ming-xin,SONG Xing-hua. An Improved Parameters Estimated Method for Virtual Correlative Channel[J]. Electro-Optic Technology Application, 2009, 24(5): 62-66 |
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| Authors: | DAI Ming-xin SONG Xing-hua |
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| Affiliation: | DAI Ming-xin,SONG Xing-hua(Communication Terminal of Beijing Aviation Control Center,Beijing 100120,China) |
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| Abstract: | In the frame of the distributed video coding,the exact estimate for the statistic between the WZ frame and assistant side information,the exact model and estimated parameters for virtual correlative channel is important to improve the coding compress efficiency and the control of the code rate.The model selection and parameters optimization for analog channel were discussed.The Laplace model and the Gauss model in common used in the video frequency were researched.An estimate method of parameters with emend... |
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| Keywords: | distributed video coding Wyner-Ziv coding virtual correlative channel side information |
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