| MPEG-2可分级图像编码的实时传输的实现 |
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| 引用本文： | 胡毅,胡咏梅.MPEG-2可分级图像编码的实时传输的实现[J].计算机技术与发展,2001,11(2). |
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| 作者姓名： | 胡毅 胡咏梅 |
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| 作者单位： | 1. 山东大学计算机系,
2. 山东大学自动化系, |
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| 摘 要： | 本文介绍了基于MPEG-2国际标准的可分级编码方法，并以数据分割可分级方法对一个视频源产生的具有不同视频质量的视频层，用基本层编码提供基本视频质量，增强层则被编码来增强基本层。实验结果证明，增强层对基层的图像质量确实有相当的增强作用，并能自动适应网络信道的状况满足实时视频传输的要求。
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| 关 键 词： | MPEG-2 可分级编码 RTP/RTCP |
Design and Implementation of Real-Time Transmission Based on Data Division Hierarchical Coding of Image in MPEG-2 |
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| HU Yi,Hu Yongmei.Design and Implementation of Real-Time Transmission Based on Data Division Hierarchical Coding of Image in MPEG-2[J].Computer Technology and Development,2001,11(2). |
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| Authors: | HU Yi Hu Yongmei |
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| Abstract: | This paper introduces ways of hierarchical coding based on the international standard MPEG-2,and produces two video layers from one source video based on data division hierarchical way.These two layers have different image quality,the low layer will be decoded by itself to provide a video with basal quality,while the enhanced layer will be used to improve the quality of the video that produced by the low layer.Through experiment,the enhanced effect on the quality of the base layer video is showed to be evident and promising,and it is adaptive to network condition and can satisfies requirements of real-time video communications. |
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