| IP网络MPEG-4视频流的自适应差错掩盖算法 |
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| 引用本文： | 王赜,刘文菊. IP网络MPEG-4视频流的自适应差错掩盖算法[J]. 计算机工程与应用, 2006, 42(11): 144-146,185 |
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| 作者姓名： | 王赜 刘文菊 |
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| 作者单位： | 天津工业大学计算机技术与自动化学院,天津,300160;天津工业大学计算机技术与自动化学院,天津,300160 |
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| 摘 要： | 针对IP网络上的MPEG-4视频传输,采用面向差错控制的打包方案,提出了一种结合时域差错恢复和空域差错恢复方法的快速自适应差错恢复混合算法。该算法根据视频帧的编码模式、丢失宏块的邻域宏块的编码模式、运动程度和运动矢量一致性自适应地选择差错恢复方法。仿真实验结果验证了自适应算法具有较好的差错恢复能力。
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| 关 键 词： | 自适应差错掩盖 视频通信 MPEG-4 IP网络 |
| 文章编号： | 1002-8331-（2006）11-0144-03 |
| 收稿时间： | 2005-07-01 |
| 修稿时间： | 2005-07-01 |
An Adaptive Error Concealment Algorithm for MPEG-4 Video Transmission over IP Network |
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| Wang Ze,Liu Wenju. An Adaptive Error Concealment Algorithm for MPEG-4 Video Transmission over IP Network[J]. Computer Engineering and Applications, 2006, 42(11): 144-146,185 |
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| Authors: | Wang Ze Liu Wenju |
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| Affiliation: | School of Computer Technology and Automation,Tianjin Polytechnic University,Tianjin 300160 |
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| Abstract: | Focusing on MPEG-4 video transmission over IP network,a packet forming method based on error control is introduced and a fast adaptive error concealment algorithm for video communication is proposed by combination of temporal and spatial error concealment methods.Proper error concealment method can be chosen adaptively according to frame coding type,macro-block coding mode and motion vectors of neighbor macro-blocks in the algorithm proposed. The performance of the adaptive algorithm is justified by experiment results. |
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| Keywords: | MPEG-4 |
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