%0 Journal Article
%T 基于语义单元的足球视频事件检测
%A 童晓峰
%A 刘青山
%A 卢汉
%A 金洪亮
%J 自动化学报
%P 523-529
%D 2005
%X ？Asemanticunitbasedeventdetectionschemeinsoccervideosisproposedinthispaper.Theschemecanbecharacterizedasathree-layerframework.Atthelowestlayer,low-levelfeaturesincludingcolor,texture,edge,shape,andmotionareextracted.High-levelsemanticeventsaredefinedatthehighestlayer.Inordertoconnectlow-levelfeaturesandhigh-levelsemantics,wedesignanddefinesomesemanticunitsattheintermediatelayer.Asemanticunitiscomposedofasequenceofconsecutivesframeswiththesamecuethatisdeducedfromlow-levelfeatures.Basedonsemanticunits,aBayesiannetworkisusedtoreasontheprobabilitiesofevents.Theexperimentsforshootandcardeventdetectioninsoccervideosshowthattheproposedmethodhasanencouragingperformance.
%K Eventdetection
%K semanticunit
%K videosemanticanalysis
%K Bayesiannetwork
%U http://www.aas.net.cn/CN/abstract/abstract13321.shtml