《电子信息专业英语》课件 Lesson 9 Virtual Reality

Lesson9VirtualRealityKeywords■virtual[ˈvɜ:tʃuəl]虚拟的■reality[rɪ'ælɪtɪ]现实■interactive[ɪntər'æktɪv]交互式的■feedback['fiːdbæk]反馈■augmented[ɔːɡ'mentɪd]增强的■dimensional[dɪ'menʃənəl]空间的■polyesthesia[,pɔlies'θi:ziə]多感知性■perception[pə'sepʃ(ə)n]感知，知■autonomy[ɔː'tɒnəmɪ]自主性■simulate['sɪmjʊleɪt]模仿■decoration[dekə'reɪʃ(ə)n]装饰■emergency[ɪ'mɜːdʒ(ə)nsɪ]紧急情况■drill[drɪl]演习■artificially[,a:ti'fiʃəli]人工地■aerospace['eərəspeɪs]航天■gravity[ˈgrævətɪ]重力■工作任务：通过VR体验全新的虚拟现实世界■学习目标：掌握VR的基本概念、特征以及应用领域■

重点难点：了解VR的特征与应用■

推荐学时：6学时1.Whatisvirtualreality?Virtualreality(VR)isaninteractivecomputer-generatedexperiencetakingplacewithinasimulatedenvironment,thatincorporatesmainlyauditoryandvisual,butalsoothertypesofsensoryfeedbacklikehaptic.Thisimmersiveenvironmentcanbesimilartotherealworldoritcanbefantastical,creatinganexperiencethatisnotpossibleinordinaryphysicalreality.AugmentedrealitysystemsmayalsobeconsideredaformofVRthatlayersvirtualinformationoveralivecamerafeedintoaheadsetorthroughasmartphoneortabletdevicegivingtheusertheability

toviewthree-dimensionalimages.CurrentVRtechnologymostcommonlyuses

virtualrealityheadsets

ormulti-projectedenvironments,sometimesincombinationwithphysicalenvironmentsorprops,togeneraterealisticimages,soundsandothersensationsthatsimulateauser'sphysicalpresenceinavirtualorimaginaryenvironment.Apersonusingvirtualrealityequipmentisableto"lookaround"theartificialworld,movearoundinit,andinteractwithvirtualfeaturesoritems.TheeffectiscommonlycreatedbyVRheadsetsconsistingofa

head-mounteddisplay

withasmallscreeninfrontoftheeyes,butcanalsobecreatedthroughspeciallydesignedroomswithmultiplelargescreens.AllmodernVRdisplaysarebasedontechnologydevelopedforsmartphonesincluding:gyroscopesandmotionsensorsfortrackinghead,hand,andbodypositions;smallHDscreensforstereoscopicdisplays;andsmall,lightweightandfastprocessors.IndependentproductionofVRimagesandvideohasincreasedbythedevelopmentofomnidirectionalcameras,alsoknownas360-degreecamerasorVRcamerashavetheabilitytorecordinalldirections.2.Thecharacteristicsofvirtualreality(1)PolyesthesiaPolyesthesiareferstothesenseofhearing,touch,motion,andeventaste,smellandperception,inadditiontothevisualperceptionpossessedbyordinarycomputers.Theidealvirtualrealityshouldhavetheperceptionfunctionofallpeople.(2)ExistencesenseExistencesensereferstothedegreetowhichusersfeeltherealexistenceoftheprotagonistinthesimulatedenvironment.Theidealsimulationenvironmentshouldmakeitdifficultforuserstodistinguishthetruefromthefalse.(3)InteractivityInteractivityreferstothedegreeofuser'sabilitytomanipulateobjectsinasimulatedenvironmentandtogetfeedbackfromtheenvironment.(4)AutonomyAutonomyreferstothedegreeofmovementofobjectsinavirtualenvironmentaccordingtothelawsofphysicalmotionintherealworld.3.Theapplicationofvirtualreality(1)EntertainmentVRhasmanyapplicationsinavarietyoffields.Itismostcommonlyusedinentertainmentapplicationssuchasgamingand3Dcinema.Consumervirtualrealityheadsetswerefirstreleasedbyvideogamecompaniesintheearly-mid1990's.3Dcinemahasbeenusedforsportingevents,fineart,musicvideosandshortfilms.Since2015,virtualrealityhasbeeninstalledontoanumberofrollercoastersandthemeparks.(2)MedicineSurgerytrainingcanbedonethroughvirtualreality.VRcansimulaterealspacesforworkplaceoccupationalsafetyandhealthpurposes,educationalpurposes,andtrainingpurposes.Itcanbeusedtoprovidelearnerswithavirtualenvironmentwheretheycandeveloptheirskillswithoutthereal-worldconsequencesoffailing.(3)InteriordesignVirtualrealityreflectsthedesigner'sideasinavisualform,designerscanaccordingtoyourownideatobuildingdecoration"virtual"roomcompletely,andcantransformtheirplaceintheroomtoobservetheeffectofthedesign,untilsatisfied.Itnotonlysavestime,butalsosavesthecostofmodelmaking.(4)RealestatedevelopmentWiththeintensificationofcompetitionintherealestateindustry,thetraditionalmeansofdisplaysuchasfloorplan,performancechart,sandtable,modelroomandsoonhavebeenfarfrommeetingtheneedsofconsumers.Theformsofrealestateprojectscanberoughlydividedintotwotypes:realmodeandcrystalsandtable.(5)EmergencydrillTheemergenceofvirtualrealityprovidesanewdevelopmentmodeforemergencydrill,whichsimulatestheaccidentsceneintothevirtualscene,whereallkindsofaccidentsareartificiallycreated,andtheparticipantsareorganizedtomakecorrectresponse.(6)IndustrialsimulationVirtualrealityhasbeenwidelyappliedtoeverylinkofindustrybysomelargeenterprisesintheworld.Itplaysanimportantroleinimprovingtheefficiencyofdevelopment,strengtheningtheabilityofdatacollection,analysisandprocessing,reducingtheerrorofdecisionmakingandreducingtheriskoftheenterprise.(7)MilitaryandaerospaceSimulationtraininghasalwaysbeenanimportanttopicinthemilitaryandaerospaceindustry,whichprovid