| 基于水平条状分割的HDTV视频编码器的设计与实现 |
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| 引用本文： | 熊红凯,余松煜,叶玮.基于水平条状分割的HDTV视频编码器的设计与实现[J].上海交通大学学报,2002,36(12):1736-1740. |
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| 作者姓名： | 熊红凯 余松煜 叶玮 |
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| 作者单位： | 上海交通大学,图像通信与信息处理研究所,上海,200030 |
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| 摘 要： | 阐述了实现MPEG-2 MP@HL压缩标准的HDTV视频编码器的一种基于水平条状分割的系统实施方案，讨论了其子图处理单元包括子图划分、压缩子码流合成模块和子图压缩码率分配策略的实现流程，对子图划分模块从原理设计到具体实现都进行了分析，并在码率控制Test Model 5(TM5)算法的基础上对关键的子图码率分配策略进行了设计．实验数据表明，在保证图像一致性的前提下减少了边界效应．
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| 关 键 词： | 视频编码器 条状分割 码率分配 活动性分析 |
| 文章编号： | 1006-2467(2002)12-1736-05 |
| 修稿时间： | 2001年12月23 |
Designing and Realization for HDTV MPEG-2 Video Coders Based on Horizontal Strip Segmentation |
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| XIONG Hong-kai,YU Song-yu,YE Wei.Designing and Realization for HDTV MPEG-2 Video Coders Based on Horizontal Strip Segmentation[J].Journal of Shanghai Jiaotong University,2002,36(12):1736-1740. |
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| Authors: | XIONG Hong-kai YU Song-yu YE Wei |
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| Abstract: | A scheme for HDTV MPEG-2 MP@HL video coders based on horizontal strip segmentation was presented. A flow diagram, which includes dividing subpictures, synthesizing compressed elemental streams of sub-pictures and allocating sub-pictures bit-rate, was presented. Not only is the protocol definition and implementation for sub-pictures processing module offered, but the crucial sub-pictures bit-rate allocation strategy on the basis of Test Model 5 (TM5) algorithm for rate control, which alleviates the boundary effect with a promise of the picture consistency, is composed. |
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| Keywords: | video encoder strip segmentation bit-rate allocation activity analysis |
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