欢迎来到天天文库
浏览记录
ID:40342917
大小:554.50 KB
页数:45页
时间:2019-07-31
《计算机专业英语(第二版) 孙建忠 Chapter13》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、ComputerEnglishChapter13VirtualRealityKeypoints:usefultermsanddefinitionsofVirtualRealityDifficultpoints:applicationsandfeaturesofVRMLRequirements:Conceptofvirtualreality2.ApplicationsofVRML3.DescribethefeaturesofVRML4.了解广告文体的特点NewWords&Expressions:V
2、irtualreality虚拟现实jerky颠簸的,急动的,此处指图像抖动abuse吸毒,滥用preventfrom阻止,妨碍infrontof在……前面relayvt.vi.中继,转播haptica.触觉的stylusn.指示笔,触针dystrophyn.营养失调teleconferencen.(远程)电信会议13.1VirtualRealityAbbreviations:LCD(Liquid-CrystalDisplay)液晶显示HMD(Head-MountedDisplay)头部安装的显示
3、器13.1VirtualRealityVirtualrealityisasystemthatenablesoneormoreuserstomoveandreactinacomputer-simulatedenvironment.Varioustypesofdevicesallowuserstosenseandmanipulatevirtualobjectsmuchastheywouldrealobjects1.Thisnaturalstyleofinteractiongivesparticipa
4、ntsthefeelingofbeingimmersedinthesimulatedworld.Virtualworldsarecreatedbymathematicalmodelsandcomputerprograms.虚拟现实是一个能让一个或多个用户在计算机模拟环境下移动和做出反应的系统。各种设备让用户去感觉和操作虚拟物体,就像他们是真实物体一样。这种自然的交互风格让参与者感到融入到模拟世界。虚拟世界是由数学模型和计算机程序创造的。13.1VirtualRealityVirtualreali
5、tysimulationsdifferfromothercomputersimulationsinthattheyrequirespecialinterfacedevicesthattransmitthesights,sounds,andsensationsofthesimulatedworldtotheuser2.Thesedevicesalsorecordandsendthespeechandmovementsoftheparticipantstothesimulationprogram.虚
6、拟现实模拟不同于其他要求特殊界面设备的计算机模拟,这些设备向用户传送模拟世界的视觉、声音和感觉。这些设备还向模拟程序记录和发送语音和参与者的运动。13.1VirtualRealityToseeinthevirtualworld,theuserwearsahead-mounteddisplay(HMD)withscreensdirectedateacheye.TheHMDalsocontainsapositiontrackertomonitorthelocationoftheuser’sheada
7、ndthedirectioninwhichtheuserislooking.Usingthisinformation,acomputerrecalculatesimagesofthevirtualworldaslightlydifferentviewforeacheyetomatchthedirectioninwhichtheuserislooking,anddisplaystheseimagesonthe(HMD).要观看虚拟世界,用户戴上一个头部安装的显示器(HMD),HMD上有在每只眼睛前
8、表演的屏幕。HMD还包括一个监视用户头部位置和观看方向的跟踪器。用这个信息,计算机重新计算每只眼睛稍微视觉差异的虚拟世界图像,使它与用户的观察方向一致,同时在HMD上显示这些图像。13.1VirtualRealityThecomputermustgeneratethesenewviewsatleasttentimesasecondinordertopreventtheuser’sviewfromappearinghaltingandjerkyandfromlaggingbehindtheuser
此文档下载收益归作者所有