| 多参考预测链的时域可扩展性和抗错性 |
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| 引用本文： | 林晓森,戴琼海,尔桂花. 多参考预测链的时域可扩展性和抗错性[J]. 清华大学学报(自然科学版), 2005, 45(1): 88-92 |
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| 作者姓名： | 林晓森 戴琼海 尔桂花 |
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| 作者单位： | 清华大学,自动化系,北京,100084;清华大学,自动化系,北京,100084;清华大学,深圳研究生院,深圳,518055 |
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| 基金项目： | 国家自然科学基金资助项目(60432030)，国家教育振兴计划资助项目(092405009) |
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| 摘 要： | 网络的带宽抖动和数据传输错误是影响视频传输的重要原因。该文提出了一种新的多参考帧图像预测的视频编码算法,即多参考预测链,使视频具有时域可扩展性和抗错性解决网络的这两个潜在问题。该算法中P帧之间的参考预测关系构成多条链状结构,使视频具有时域可扩展性。链间的不相关性使每个链可独立解码,从而增强了码流抗错性。该算法采用R-D框架动态的管理预测关系链,从而适合网络带宽的变化而获得最佳的终端视觉效果。仿真实验表明,采用多参考预测链编码的码流时域可扩展性的应用非常可行,且表现出较高的抗错性。
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| 关 键 词： | 信息处理 视频编码 多参考预测链 时域可扩展 抗错性 |
| 文章编号： | 1000-0054(2005)01-0088-05 |
| 修稿时间： | 2003-11-20 |
Error resilience and temporal scalability for video transmissions using multiple reference prediction chain coding |
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| LIN Xiaosen,Dai Qionghai,ER Guihua. Error resilience and temporal scalability for video transmissions using multiple reference prediction chain coding[J]. Journal of Tsinghua University(Science and Technology), 2005, 45(1): 88-92 |
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| Authors: | LIN Xiaosen Dai Qionghai ER Guihua |
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| Affiliation: | LIN Xiaosen~1,DAI Qionghai~1,2,ER Guihua~1 |
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| Abstract: | Bandwidth and transmission errors are two common problems in network video transmissions. This paper presents a multiple reference picture selection scheme to encode video for temporal scalability and error resilience. Temporal scalability is obtained with prediction chains constructed to give prediction dependency between P-frames. The inter-chain independency also endows the video with error recovery ability. The prediction chains for a group of frames are dynamically managed using a rate-distortion optimization framework so that the expected end-to-end video quality is achieved for a given rate constraint. Simulation results show that the algorithm provides good temporal scalability and error resilience. |
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| Keywords: | information processing video coding multi-reference prediction chains temporal scalability error resilience |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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