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1、西华大学硕士学位论文视频车速检测中图像分析算法的研究姓名：童永全申请学位级别：硕士专业：计算机应用技术指导教师：罗晓晖20070325西华大学硕士学位论文ResearchofImageAnalysisAlgorithminVideoVehicleDeteorionComputerApplicationTechnologyCandidateYongquanTongSupervisorXiaohuiLiuTransportationisveryimportantinnationaleconomyandsocietydevelopment．V
2、ehicledetectionisallimportantpartoftransportationmanagementsystem．Withimageprocessingtechnologydeveloping,Videovehicledetectioniswidelyusedinvehiclevelocitydetection。TIlisarticlestudiesinlageanalysisalgofithminvideovehicledetection．n培algorithmiscomposedoffourparts：inlage
3、priorprocess,backgroundreconsm枷on,objectsegmentandmatch,coordinatetransform．Priorprocesstheinlaggswhichareobtainedbyoamel-afixedaboveroad。Thewayisthatchangecolorimageintograyimageandfiltertheprimeimagewithmedialfilter．ThispaperUSeSlongest·stable-statealgorithmtoreconstru
4、ctbackground。Theprimewayofthisalgorithmisthatgiveninlong-timesequenceframes，thegrayvalueofbackgroundpixelisinlongest-stable·stateinthesesequencefl'alnes．Thegrayvalueinlongest-stable-stateisthepixelgrayvalueinbackground．Soitcanreconsla'uetbackground．Thispaperputsupamoving
5、o场ectsegmentationalgorithmfromimagesequencebasedonedge．Beeal．kqethevehiclegraymaybesimilartotheroadandinfluenceofshadow,directdifferencewillbringwrongobjectsegment．Thisalgorithmisproposedbycombiningedgedetection,Gaussfilter,andbackgrounddifference．Thealgorithmreinforcest
6、heedgeofmovingo巧ectbYedgedetection,andavoidstheinfluenceofnoisebroughtbyedgedetection．Finally,themovingobjectissegmentedbybackgrounddifference．Afterobjectsegment,thispaperusesregionch翻旧cteftrackingtoU'actobjectinsequenceimagesbasedOilgeometrycharacter．Soitc觚obtainsituati
7、ondifferenceoftheobject．Accordingtothesituationdifferenceoftheobject,thispaperusesarectificationmethodforperspectivedistortionimagetotransformcoordinate．SoitCanchangepixelsituationdifferenceintoactualsituationdifference,andthencalculatethevehiclevelocity．Keywords：videode
8、tection,backgroundreconstruction,cdgedetection,objectsegment,coordinatetransform西华大学硕士学位论文声明本人声明所里交的学位论
