基于视频图像处理技术的运动车辆检测方法研究

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1、Y1525340分类号：U4910710—20050652骧誊太海硕士学位论文基于视频图像处理技术的运动车辆检测方法研究导师姓名职称申请学位级别朱媛媛苏诗琳副教授硕士学科专业名称交通信。gi程及控制论文提交日期2008年5月24日论文答辩日期2008年5月29日学位授予单位长安大学答辩委员会主席学位论文评阅人巨永锋贺昱曜赵忠杰AbstractWiththedevelopmentofcomputertechnologies，moreandmorevideosurveillancesystemshavebeenwidelyappliedinproducti

2、onandlife．IntelligentTransportationMonitoringSystemoffreewayisoneoftheimportantapplications，andisthetrendoftrafficdevelopmentinthefuture．MovingvehicledetectionbasedonvideoisthekeytotheIntelligentTransportationMonitoringSystemoffreeway．Thethesisresearchessomekeytechnologiesaboutm

3、ovingvehicledetectionoftheIntelligentTransportationMonitoringSystembasedonvideo．Itregardstrafficscenepictureobtainedbycameraastheresearchobject，anditisonthepremiseofrotatablecamera．Consideringthejudgmentofthecamerarotation，thearticleanalyzesthemethodofroadedgeextractionandtheexp

4、erimentalresultsbasedonvideosequenceimages．Accordingtocorrelationcoefficientoftheseroadedgeimagesextracted，themethodofthecamerarotationjudgmentisproposed，andthefeasibilityisverified．Theproblemissolvedthatwhetherthebackgroundneedtobereconstructed．Itisjudgedautomaticallybythecompu

5、tersystem．Inthedetectionofmovingvehiclesinstaticbackground，threemethods，including‘opticalflow’，‘backgrounddifference’，‘differentialbetweenadjacentframes’，arediscussed．Throughcomparisonandanalysis，themethodofbackgrounddifferenceismainlyresearched．Consideringthebackgroundupdating，

6、differentselectivebackgroundupdatingalgorithmsareanalyzed．Oneadaptivealgorithmisadoptedthroughcomparisonandexperimentalanalysis．Onthebaseoftheexistingshadowdetectionandremovalalgorithms，alittleimprovementaboutashadowdetectionmethodiSrealized．Theresultsshowthatmostoftheshadowcanb

7、edetectedandremovedwiththismethod．Then，accuratevehicleextractionisrealized．Atthesametimeoftheresearchaboutmovingvehicledetection，theflowchartofthemovingvehicledetectionsystemisdevisedandexplainedsimplyatlast．KeyWords：IntelligentTransportationMonitoringSystem，BackgroundDifference

8、，BackgroundUpdating，VehicleDetection，ShadowRemo