摘要
视频转码技术是多媒体通信领域新的研究热点。首先介绍了已有的几类转码算法 ,然后以MPEG 2到MPEG 4的转码为例 ,探讨了转码中的关键技术 ,并给出了转码参考结构 ,最后介绍了转码进一步的研究方向。
Transcoding of video is a new research field in multimedia system.An overview of transcoding techniques is provided first.Then some key techniques such as bit rate reduction,spatial and temporal resolution reduction in transcoding between MPEG 2 to MPEG 4 Simple Profile are discussed.Two reference architectures are also presented.Some future research directions are also given in the conclusion.
出处
《测控技术》
CSCD
2003年第5期36-39,共4页
Measurement & Control Technology
基金
国家自然科学基金资助项目 ( 60 172 0 45 )
北京市自然科学基金资助项目 ( 4 0 0 2 0 0 2 )
