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1、首都師范大學(xué)碩士學(xué)位論文體育運(yùn)動(dòng)視頻合成對(duì)比姓名：潘雪峰申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：計(jì)算機(jī)應(yīng)用技術(shù)指導(dǎo)教師：李錦濤劉金剛20050425TheCompositionandComparisonofSportsVideoPanXuefeng(ComputerAppliedTechnology)DirectedbyLiJintaoandLiuJingangInrecentyearsdigitalvideoprocessingtechnologyi

2、sintroducedinsportstraining.Thiskindoftechnicalinnovationsintrainingmethodsgreatlypromotetheefficiencyofthesportstraining.Howeverthereseachinvolvesvideoobjectsegmentationhumanmotiontrackingvideocontentunderstandingetc.In

3、thefieldsofvideoprocessingandcomputervisiontheresearchsonhumanmotionanalysishumanbodysegmentationandobjectbasedvideomatingareattractingmanyresearchersatentionwiththirewideapplicationprospect.Becauseofthecomplexityofhuman

4、motionandbackgroundvariationtheexistingresearchmethodsimposelimitationoncomplexhumanactionanddynamicbackgroundAnewapproachtocomposethedivingvideosbasedonhumanbodysegmentationandobtainingmotionregioninformationisbroughtfo

5、rwardinthispaper.Insteadofaimingatastaticbackgrounditcandealwithdivingvideowithdynamicbackground.Themainschemeistoobtainmotionregioninformationofthehumanbodyfromthedivingvideothenusethisinformationtomattingthemovinghuman

6、bodyobjectintotheothervideo.Theimagediferencebasedsegmentationglobalmotionestimation(compensation)andmatingareused.Thefinalresultisgiventoshowthatourmethoddoeswelinkeepingthedefinitionoftheathletesbodyobtainedfromtheorig

7、inalvideo.Themaincontributionsareasfolows:1.AccurateinitialvalueandoutlierfilteringthresholdselectioninGMEGlobalmotionestimation(GME)istoestimatetheparametersof~motionthatcausesthemovementofbackgroundinvideo.Thepixelcorr

8、espondencesbetweenadjacentframescanbeobtainedbyGME.ThusthedynamicbackgroundindivingcanbesimplifiedtoastaticonewithGMC(globalmotioncompensation).徹accurateinitialvalueselectingmethodisproposedtoimproveKonradsGMEmethodinMPE

9、G4validationmodelinordertoavoidgettingtrappedintoawronglocalminimum.AthresholdselectionfromgraylevelhistogramusingOtsumethodisusedinGMEtofiltertheoutlierduringreiteration.Byfilteringtheoutliersthenoiseiseliminatedefectiv

10、elyinparametersestimationandtheiteratetimesisgreatlydecreased.ComparedwithKonradsmethodthemethodimprovesthespeedofGMEnearly2times.2.VideomattingusingmotionregioninformationwithkeepingthedefinitionofmovingobjectAnautomati

11、ccompositionalgorithmforsportsvideoinsamesceneisproposed.TheinformationoftheforegroundareasincurrentframeisobtainedwithGMEandGMCbetweencurrentframeandtemporallyadjacentframes.Thecompositionframeisconstructedbasedontheinf

12、ormationoftheforegroundareasofbothprecompositionframesusingALPHAmatting.Experimentsdemonstratethatproposedmethodisrobusttothedynamicsceneandabletocomposethesportsvideokeepingbothoftheforegroundareasofprecompositionframes

13、clear.3.ImplementtheCompositionandComparisonofSportsVideoinDVCOACHsystemWithallthemethodsmentionedabouethispaperimplementthecompositionandcomparisonfunctioninDVCOACHsystemKeywords:GMEJGMCmotionregioninformationobtainingA

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