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1、MultimediaToolsandApplications,21,173–195,2003c2003KluwerAcademicPublishers.ManufacturedinTheNetherlands.RemoteVideoMonitoringOvertheWWWS.C.HUIasschui@ntu.edu.sgF.WANGwangfd@yahoo.comNanyangTechnologicalUniversity,SchoolofComputerEngineering,NanyangAvenue,Singapore639798Abstract.Remotevide
2、omonitoringhasbecomeincreasinglyimportantformonitoringthesecurityofdestinedlocations.TraditionalsecuritymonitoringsystemsusingcoaxialcablesandVCRrecordingsystemsareexpensiveandineffective.WiththerapidgrowthoftheInternet,itisnowpossibletouseitasanintermediatetransmissionmediumtosupportreal-t
3、imevideotransmission.Thispaperproposesaweb-basedremotemonitoringsystemknownasiSecure.Apartfromtheessentialliveorstoredvideotransmission,intelligentmonitoringandweb-basedmonitoringarealsosupported.AsthetransmissionoflivevideodatathroughthepacketswitchednetworkenvironmentoftheInternetcanresul
4、tinpacketlossandqualitydegradation,theiSecuresystemhasimplementedanadaptivetransmissionandrecoverymechanismtoenhancethequalityofreal-timevideotransmission.Intelligentmonitoringforelevatorsecurityandface-baseddooraccesscontrolapplicationshasbeenincorporated.TheiSecuresystemcanbeusedasaframew
5、orkfordevelopingotherintelligentremotemonitoringapplications.Keywords:remotevideomonitoring,web-basedmonitoring,intelligentmonitoring,real-timevideotransmission,worldwideweb1.IntroductionTraditionalmonitoringsystemshavebeenwidelyusedforsecuritypurposesforbank,elevator,entrancetoapartment,et
6、c.Insuchsystems,avideocameraisusuallyinstalledatthedestinedlocationandconnectedtoasecurityconsolewherethesecurityoperatorcanmonitorforsuspiciousactivities.ThevideoimagesfromthecameracanalsoberecordedandplayedbackonaVCRmachine.However,thepicturequalityofthevideo-tapeislow.Itisalsoimpossiblet
7、osearchtherecordedimagesforanydesiredinformation.Inaddition,theinstallationofsuchsystemsisveryexpensiveduetotheuseofcoaxialcablesandothercontrollerequipment.Recently,theInternethasprovidedanintermediatetransmissionmediumtosupportremotevideomonitoring.Anu