欢迎来到天天文库
浏览记录
ID:37549105
大小:262.45 KB
页数:23页
时间:2019-05-25
《计算机专业英语_chapter_14》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、ComputerEnglishChapter14VirtualRealityKeypoints:Keypoints:uusefultermsanddefinitionssefultermsanddefinitionsofofVirtualRealityVirtualRealityDifficultpoints:Difficultpoints:aapplicationsandfeaturesofpplicationsandfeaturesofVRMLVRMLRequirements:Requirements:1.Conceptofvirtualreality2.
2、ApplicationsofVRML3.DescribethefeaturesofVRML4.了解广告文体的特点14.1AnIntroductiontoandHistoryofVirtualRealityNewWords&Expressions:presentation陈述,,,表达,表达multisensoryadj.多感官的perspective透视图,,,观点,观点illusionn.幻想image影像,,,图像,图像inherently天性地,,,固有地,固有地six-surfaceCube六面体real-time实时的stereo立体的,,,立体感觉
3、的,立体感觉的resolutionn..分辨率mountv.装配,,,安装,安装releasev.释放,,,放弃,放弃depthcue深度暗示projectedadj.投影的visualadj.视觉的simulationn.模拟Abbreviations:VR(VirtualReality)虚拟现实BOOM(BinocularOmni-OrientationMonitor)双目全方位监视器HMD(head-mounteddisplay)头盔显示器14.1AnIntroductiontoandHistoryofVirtualRealityOnedefinitio
4、nofvirtualrealityisawide-fieldpresentationofcomputer-generated,multisensoryinformationthattracksauserinrealtime.ThisdefinitionisusedattheElectronicVisualizationLaboratoryinChicago(EVL[1]).Inotherwords,virtualreality[2]meansthattheuserissurroundedbyacomputer-generatedimagethatchanges
5、dependingonthemovements—i.e.shiftsinperspective—oftheuser.虚拟现实的定义之一::虚拟现实是对由计算机生成的:虚拟现实是对由计算机生成的、、能、能够实时追踪用户的多感官信息的一种笼统表述。。芝加哥电。芝加哥电子可视化实验室(EVL))采用的就是这种定义)采用的就是这种定义。。换句话说。换句话说,虚拟现实意味着用户被计算机生成的图景所包围,,这些图,这些图景要依据用户的运动((如(如视角的转换))而产生变化)而产生变化。14.1AnIntroductiontoandHistoryofVirtualReali
6、tyThefirstattemptatvirtualrealityusedhead-mounteddisplays(HMDs).InHMDs,projectorsfeedreal-timeimagestosmallscreensattachedinsideakindofhelmetthattheuserwears.Inthebeginning,HMDsoftenshowedmonopictures,andtheuser’sheadmovementsweretracked.InmodernHMDs,stereopicturesarestandard,sincet
7、hetechniquehasbecomecheaper.Typically,HMDseitherhavepoorresolutionoraretooheavy.BecauseonlyonepersonatatimecanuseanHMD,discussionofimagesismuchmoredifficult.虚拟现实首次尝试使用了头盔式显示器(((HMD)。在在在HMD中中中,中,,,投影机把投影机把实时图景投影到附着于用户所带头盔内的小屏幕上。。。最初。最初,,,HMD显示平面图片,,,追踪用户的头部运动,追踪用户的头部运动。。。但在现代。但在现代HMD
8、中中中,中,,,由于这项技术变由于这项
此文档下载收益归作者所有