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ID:36621137
大小:2.42 MB
页数:67页
时间:2019-05-13
《基于视频的车辆跟踪与交通事件检测》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、四川大学硕士学位论文基于视频的车辆跟踪与交通事件检测姓名:王宁申请学位级别:硕士专业:计算机应用技术指导教师:游志胜20050501配的跟踪算法进行研究并实现。并且提出了一种改进了的活动轮廓(Snake模型)的图像序列中的车辆跟踪算法。对于能量函数的选取,参数的确定等问题做出详细的分析与讨论,并且给出了初步实验结果。4)描述了基于车辆跟踪结果的交通事件检测方法。分析研究了车辆逆行、超速、异常停车等交通事件,提出相应的具体检测方法并给出实验结果。对于车辆速度的检测,分析讨论了实际应用中摄像机标定的推导公式以及产生误差的原因。5)车辆跟踪与交通事件检测系统的设计,分析了其中几
2、个值得注意的功能模块,并给出了系统的框架结构和实现。本文针对车辆视频跟踪与事件检测系统的一些问题,提出了相应的解决方法,通过实验证明,这些方法效果良好。关键词:车辆检测与跟踪、背景模型、Snake模型、交通事件检测VideoVehicleTrackingandTrafficIncidentsDetectionMajor:ComputerApplicationTechniqueGraduate:WangNingAdvisor:Prof.YouZhishengInordertosolvevariousproblemscausedbytherapidgrowingofsurfa
3、cetraffic,theresearchofIntelligentTransportationSystemcomestoanissueofconsequence.AsanimportantpartofITS,vehicletrackingandtrafficincidentsdetectionbecomesaresearchfocusallovertheworld.AccordingtothekeytechniquesofITS,somealgorithmsandtechniquesforvehicletrackingandtrafficincidentsdetecti
4、onhavebeenanalyzedandimproved.Severalmethodsbasedonvehicletracking,whichaleusedtodetecttrafficincidentssuchasconverseandover-speed,havebeendescribedindemilinthisthesis.What’Smore.avehicletrackingandtFa俩Cincidentsdetectionsystemhasbeendesignedforapplication.Themainideasofthisthesiscanbedes
5、cribedASfollow:11Thefirstchaptersimplyintroducestheresearchbackgroundofimelligenttransportationsystem.especiallytecbatiquesinthefIeidofvehicletrackingandtra伍Cincidentsdetection.2)Forvehicledetection,analgorithmusingnonparametrickernelestimationhasbeenanalyzedandimprovedtobuildthebackgroun
6、dmodelandtodetectmovingobjectsbybackgroundsubtraction.Bymeansofmeasuringtheflatnessdegreeoftheresultofimagedivision,shadowshavebeeneliminated.Therefore,ameasurementalgorithmwhichfeaturesindividualvehicletrackingusingrectangularmodelhasbeendevelopedtosolveproblemscausedbyvehiclesoverlappin
7、g.3)Forvehicletracking,amethodusingregionmatchinghasbeenimprovedandrealized.Anotheralgorithm,whichisbasedonimprovedsnakemodel,hasbeenanalyzedanddevelopedtosegmentmovingvehiclesandtrackthem.Furthermore,choosingreasonableenergyfuncdonandparametershasbeendiscussed.41Se
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