摘要
该文提出了一种在ＭＰＥＧ－２系统流上采用粗跳步与细跳步快速搜索Ｉ图象的方法，与一般基于逐字节搜索的方法相比，速度有很大的提高．文中将该快速方法应用于一个ＭＰＥＧ－２演播器的功能算法设计中，实现了包括快进、快退和倒播等算法．该文的搜索方法是基于恒定比特速率码流提出的，并能同样适用于变比特速率码流．
In this paper, a method of fast searching I pictures in MPEG 2 system stream using long step and short step is presented. The method achieves higher speed performance comparing with the byte by byte searching method, and is applied in the design of the functions of MPEG 2 players, such as fast forward, fast backward and play backward. The implementation of these functions is described in detail. Moreover, this method can also be applied in VBR (variable bit rate) MPEG system stream, which is proposed based on CBR (constant bit rate) stream.
出处
《软件学报》
EI
CSCD
北大核心
1998年第7期520-524,共5页
Journal of Software
基金
国家863高科技项目基金
国家"九五"科技攻关项目基金
关键词
系统流
I图象
MPEG-2
图象编码
图象处理
MPEG 2 standard, system stream, I picture, fast forward, fast backward, play backward.
