中文摘要：

足球是最具世界性的体育运动之一，球迷遍布五大洲，因此在体育视频节目中足球备受广大观众青睐．在分析了足球视频特点的基础上，提出了一种基于基本语义单元合成Petri网的足球视频查询描述模型．该模型首先定义了一种类似文本字词集合的足球视频基本语义单元集合，在此基础上采用基本语义单元合成Petri网模型建立了一种足球查询语义的描述模型，并分别构建了进球、进攻、角球、犯规、换人等足球语义．初步的实验结果验证了该模型的有效性，并能推广至球类视频和其他体育视频．

英文摘要：

The soccer is one of the most cosmopolitan sports, whose fans are found everywhere in the world. So soccer video is in favor with great mass of spectators. In this paper, based on analyzing of soccer video characteristics, a query description model based on basic semantic unit composite Petri-net （BSUCPN） for soccer video is proposed. Firstly a BSU set of soccer video just like the word set in text is defined, Secondly based on the Petri-net model a description model of soccer semantic query is designed,and then some query descriptions by BSUCPN such as goal, attack, corner kick, foul and substitution are given. The experimental results indicate that this model is robust and generic, and that it can be extended to other ball games and sports video.