虚拟现实virtualreality的介绍20.ppt

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1、VirtualReality广技师10计本2班21号汪志锋Whatarethese?HeadMountedDisplayVRData-gloveWhataretheyusedfor?PlayinggameworkingWhatisVirtualReality?DefinitionFeaturesCrucialTechnologiesApplicationsDefinitionVirtualreality(VR)isatechnologywhichallowsausertointeractwithacomputer-simulatedenvironment.FeaturesImmersiveI

2、nteractiveRealtimeViewercenteredCrucialTechnologies1.Displaysystem—immersetheuserinthevirtualworldandblockoutcontradictorysensoryimpressionsfromtherealworld2.Graphicsrenderingsystem—generates,at20to30framespersecond,theever-changingimages3.Trackingsystem—continuallyreportsthepositionandorientationo

3、ftheuser’sheadandlimbs4.Virtualworldconstructionandmaintenancesystem—buildingandmaintainingdetailedandrealisticmodelsofthevirtualworld1.DisplaysystemDisplaytechnologyadvancesveryrapidlyVRdisplaysystemmustprovideimmersionDesktopdisplaysarenotconsideredtobeVRHardlyblockouttherealworldDonotpresentvirt

4、ualworldobjectsinlifesizeDonotcreatetheillusionofimmersionCAVECaveAutomaticVirtualEnvironmentAnimmersivevirtualrealityenvironmentwhereprojectorsaredirectedto3,4,5or6ofthewallsofaroom-sizedcubeHead-MountedDisplayWornontheheadoraspartofahelmetAsmalldisplayopticinfrontofoneoreacheye3.TrackingsystemTra

5、ckingobserver’sbodycoordinate/headmotionChallenges:Accuracy（精度）Ergonomics（人类工程学）Systemlatency（系统时间延迟）HeadTrackingAtrackingmechanismregistersanyheadmotionbytheuser.Whenausermovesherhead,thescenechangesaccordingly,justasinreallife.ApplicationsManufactureProfessiontrainingGameEducationmanufactureProfe

6、ssiontraininggameeducationTkankyou!