MC 从虚拟现实(VR)到增强现实(AR) Augmented Reality (AR) Augmented Reality (AR)is a variation of Virtual Environments (VE),or Virtual Reality as it is more commonly called.VE technologies completely immerse a user inside a synthetic environment.While immersed,the user cannot see the real world around him.In contrast,AR allows the user to see the real world, with virtual objects superimposed upon or composited with the real world.Therefore,AR supplements reality,rather than completely replacing it.Ideally,it would appear to the user that the virtual and real objects coexisted in the same space. This figure shows an example of what this might look like.It shows a real desk with a real phone.Inside this room are also a virtual lamp and two virtual chairs.Note that the objects are combined in 3-D,so that the virtual lamp covers the real table,and the real table covers parts of the two virtual chairs. 3 ynh.cxh@ustc.edu.cn R.Azuma,A Survey of Augmented Reality Presence:Teleoperators and Virtual Environments,pp.355-385,August 1997.{ynh,cxh}@ustc.edu.cn 从虚拟现实(VR)到增强现实(AR) Augmented Reality (AR) Augmented Reality (AR) is a variation of Virtual Environments (VE), or Virtual Reality as it is more commonly called. VE technologies completely immerse a user inside a synthetic environment. While immersed, the user cannot see the real world around him. In contrast, AR allows the user to see the real world, with virtual objects superimposed upon or composited with the real world. Therefore, AR supplements reality, rather than completely replacing it. Ideally, it would appear to the user that the virtual and real objects coexisted in the same space. This figure shows an example of what this might look like. It shows a real desk with a real phone. Inside this room are also a virtual lamp and two virtual chairs. Note that the objects are combined in 3-D, so that the virtual lamp covers the real table, and the real table covers parts of the two virtual chairs. 3 R. Azuma, A Survey of Augmented Reality Presence: Teleoperators and Virtual Environments, pp. 355–385, August 1997