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| 压缩域H.264视频转换编码及其关键技术分析 | |
| 引用本文： | 杨高波,余圣发,张兆杨. 压缩域H.264视频转换编码及其关键技术分析[J]. 通信学报, 2006, 27(10): 124-131 |
| 作者姓名： | 杨高波 余圣发 张兆杨 |
| 作者单位： | 1. 湖南大学,计算机与通信学院,湖南,长沙,410082 2. 国防科学技术大学,电子科学与工程学院,湖南,长沙,410073 3. 上海大学,通信与信息工程学院,上海,200072 |
| 基金项目： | 国家自然科学基金;湖南省自然科学基金 |
| 摘 要： | 在分析最新的视频编码标准H.264与以前的编码标准差异基础上,针对压缩域的H.264视频转码,系统地研究了其关键技术的进展,并按DCT到HT的系数变换、运动矢量快速重估计、修正和帧内/间编码模式和速率控制等4个方面进行了分类归纳,还对未来本领域值得研究的问题进行了展望和预测。 |
| 关 键 词： | 压缩域 视频转换编码 模式映射 运动矢量重估计 |
| 文章编号： | 1000-436X（2006）10-0124-08 |
| 收稿时间： | 2005-08-25 |
| 修稿时间： | 2006-09-11 |
Video transcoding for H.264 in the compressed domain and key techniques analysis |
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| YANG Gao-bo,YU Sheng-fa,ZHANG Zhao-yang. Video transcoding for H.264 in the compressed domain and key techniques analysis[J]. Journal on Communications, 2006, 27(10): 124-131 | |
| Authors: | YANG Gao-bo YU Sheng-fa ZHANG Zhao-yang |
| Affiliation: | 1. School of Computer and Communication, Hunan University, Changsha 410082, China; 2. School of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China; 3. School of Communication and Information Engineering, Shanghai University, Shanghai 200072, China |
| Abstract: | Based on the analysis of the difference between the newest video coding standard H.264 and the earlier video-coding standard,the advances in the key technologies for H.264 video transcoding,which was directly conducted in the compressed domain,were systematically discussed.They were classified into four categories: DCT-to-HT coeffi-cients conversion,fast motion re-estimation and refinement,inter/intra coding mode decision and rate control.Future di-rections on this topic were also prospected. |
| Keywords: | H.264 |
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