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ID:40640240
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页数:6页
时间:2019-08-05
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1、ASystemforVideoSurveillanceandMonitoringThethrustofCMUresearchundertheDARPAVideoSurveillanceandMonitoring(VSAM)projectiscooperativemulti-sensorsurveillancetosupportbattlefieldawareness.UnderourVSAMIntegratedFeasibilityDemonstration(IFD)contract,wehavedevelopedautomatedvideounder
2、standingtechnologythatenablesasinglehumanoperatortomonitoractivitiesoveracomplexareausingadistributednetworkofactivevideosensors.Thegoalistoautomaticallycollectanddisseminatereal-timeinformationfromthebattlefieldtoimprovethesituationalawarenessofcommandersandstaff.Othermilitarya
3、ndfederallawenforcementapplicationsincludeprovidingperimetersecurityfortroops,monitoringpeacetreatiesorrefugeemovementsfromunmannedairvehicles,providingsecurityforembassiesorairports,andstakingoutsuspecteddrugorterroristhide-outsbycollectingtime-stampedpicturesofeveryoneentering
4、andexitingthebuilding.Automatedvideosurveillanceisanimportantresearchareainthecommercialsectoraswell.Technologyhasreachedastagewheremountingcamerastocapturevideoimageryischeap,butfindingavailablehumanresourcestositandwatchthatimageryisexpensive.Surveillancecamerasarealreadypreva
5、lentincommercialestablishments,withcameraoutputbeingrecordedtotapesthatareeitherrewrittenperiodicallyorstoredinvideoarchives.Afteracrimeoccurs–astoreisrobbedoracarisstolen–investigatorscangobackafterthefacttoseewhathappened,butofcoursebythenitistoolate.Whatisneedediscontinuous24
6、-hourmonitoringandanalysisofvideosurveillancedatatoalertsecurityofficerstoaburglaryinprogress,ortoasuspiciousindividualloiteringintheparkinglot,whileoptionsarestillopenforavoidingthecrime.Keepingtrackofpeople,vehicles,andtheirinteractionsinanurbanorbattlefieldenvironmentisadiffi
7、culttask.TheroleofVSAMvideounderstandingtechnologyinachievingthisgoalistoautomatically“parse”peopleandvehiclesfromrawvideo,determinetheirgeolocations,andinsertthemintodynamicscenevisualization.Wehavedevelopedrobustroutinesfordetectingandtrackingmovingobjects.Detectedobjectsarecl
8、assifiedintosemanticcategoriessuchashuman,human
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