動態(tài)場景下的自適應(yīng)光度補償.pdf

1、上海交通大學(xué)碩士學(xué)位論文動態(tài)場景下的自適應(yīng)光度補償姓名：陳新利申請學(xué)位級別：碩士專業(yè)：計算機軟件與理論指導(dǎo)教師：肖雙九20090101|egA1?=??SelfAdaptiveRadiometricCompensationfDynamicEnvironmentsABSTRACTAugmentedRealitydevelopsfromVirtualReality.Itenhancestheuser’sperceptionofthereal

2、wldusingtheinfmationprovidedbycomputer.Itcombinescomputergeneratedvirtualobjectssystemmessageswiththerealscenetoachievetheaugmentationofreality.augmentedrealitycomparedwithvirtualrealityhastheadvantageofmerealisticmeinte

3、ractive.Ithasbeenwidelyusedinengineeringmedicalmilitaryeducationentertainmentotherfields.ThetraditionaldisplaytechnologyfaugmentedrealityisHeadMountedDisplay(HMD)whichisheavyinconvenient.Projectiondisplayasanewmeansofdis

4、playhasbeenwidelyusedindailyliveswiththeadvantageofconvenientfastclear.itcanalsobeusedinaugmentedreality.Howeverthequalityofprojectiondisplayisrestrictedbyambientlightprojectionsurface.Fmobileprojectionequipmentthegreati

5、mpactistheneedofwhiteprojectionsurface.Researchersproposedradiometriccompensationtechnologytomakeitpossiblefprojectiononnonwhitesurfaceusingprojectcamerasystem.Butitintroducesotherproblems.Firstthere’salongcalibrationpro

6、cessbefeprojectionwkssecondrecalibrationwhichwillinterrupttheprojectionprocessisneededoncetheenvironmentchanges.Thesemakestheprojectiondisplaycomplicatedlimitsradiometriccompensation’swidelyusage.Inthispaperwefirststudyt

7、hegeometricmappingfprojectcamerasystem.Wecreatethegeometricmappingbyprojectionchessboardpattern.Thenweproposearadiometriccompensationmethodfstaticenvironmentwhichissimpleeasilyconfigurednospecialhardwarerequirements.Howe

8、verthisapproachcan’twkindynamicenvironment.Bystudyingthephotometricmodelofprojectcamerasystemwefoundthatthecolmixingmatrixofthesystemreflectsthephysicalattributesofprojectcameraisindependentofenvironment.Alsowefoundthatt

9、hereisoneglobalcolmixingmatrixfthesystem.Basedontheaboveobservationweproposeanimprovedsystemmodelwhichtakesambientlightreflectivityofprojectionsurfacethesystemvigtingeffectintoaccount.Thismodelismeaccurateuseoflessresour

10、ces.Weimplementaradiometriccompensationfdynamicenvironmentsbasedontheimprovedsystemmodel.Weusecameratomonittheenvironmentchangerecalibratethesystemtoupdatetheinternalparameters.Experimentalresultshowsthattheimprovedmodel

11、reducestheuseofresourcesspeeduptheprocessofcalibration.Fdynamicenvironmentweprojectjustoneimagetofinishtherecalibrationprocesswhichisfastenoughfadaptivecompensation.KEYWDS:AugmentedRealityProjectCameraSystemRadiometricCo