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1、VideoSimilarityDetectionforDigitalRightsManagementTimothyC.HoadJustinZobel*SchoolofComputerScienceandInformationTechnology,RMITUniversityGPOBox2476V,Melbourne3001,Australiafhoad,jzg@cs.rmit.edu.au*Contactauthorforallcorrespondence.AbstractThereareavarietyofsolutionsthathavebe
2、enproposedtopreventthedistributionofmaterialthatVastquantitiesofvideodataaredistributedaroundtheworldissubjecttocopyright,buttheyallhavelimitations.everyday.Videocontentownerswouldliketobeabletoau-Physicalcopypreventiontechniquescanbecircum-tomaticallydetectanyuseoftheirmater
3、ial,inanymediaorvented,andresultinareductioninthefreedomofrepresentation.Weinvestigatetechniquesforidentifyingsim-law-abidinguserstokeepbackupsofdigitalcontentilarvideocontentinlargecollections.Currentmethodsareandtotransferthecontentbetweendi®erentmediabasedonrelatedtechnolo
4、gy,suchasimageretrieval,buttheforpersonaluse.Watermarkingeitherresultsinae®ectivenessofthesetechniqueshasnotbeendemonstratedfornoticeabledegradationofquality,orcanbeeasilyre-thetaskoflocatingvideoclipsthatarederivedfromthesamemoved.Thusitisalsonecessarytobeabletodetectorigina
5、l.Weproposeanewmethodforlocatingvideoclips,copyrightinfringement.shot-lengthdetection,andcompareittomethodsbasedonim-Inthispaperweinvestigatetheproblemoflocat-ageretrieval.Wetestthemethodsinavarietyofcontextsandinginstancesofaqueryclipwithinalongerdataclip.showthattheyhavedi®
6、erentstrengthsandweaknesses.OurApplicationsincludelocatingspeci¯cadvertisements,resultsshowthattheshot-basedapproachispromising,butisidentifyingadvertisementbreaks,andmonitoringofnotyetsu±cientlyrobustforpracticalapplication.avideostreaminordertoidentifycopyrightinfringe-ment
7、s.Whilethetaskoflocatinginstancesofaqueryisrelativelystraightforwardwhenworkingwithtra-1Introductionditionalmedia,itisproblematicinthevideodomainduetothefactthattwoinstancesofthesameclipTheadventofDVD,digitalbroadcasting,andthemaynotbebitwiseidentical.Theycandi®erinres-useofb
8、roadbandinternetconnectionshasledtoaolution,framerate,bitrate,compre
