1、Virtual Reality,Yanci Zhang,What is Virtual Reality?,A responsive virtual world in which the user is effectively immersed Features Immersive Interactive Real time Viewer centered,Crucial Technologies,Display system Graphics rendering system Tracking system Virtual world construction and maintenance
2、system,Display System,Display technology advances very rapidly VR display system must provide immersion Desktop displays are not considered to be VR Hardly block out the real world Do not present virtual world objects in life size Do not create the illusion of immersion,CAVE,Cave Automatic Virtual E
3、nvironment An immersive virtual reality environment where projectors are directed to 3, 4, 5 or 6 of the walls of a room-sized cube,Head-Mounted Display,Worn on the head or as part of a helmet A small display optic in front of one or each eye,Panoramic Display,Use multiply displays to provide wide v
4、iew angle Widely used in many applications Challenge: geometry and color calibration,Tracking System,Tracking observers body coordinate / head motion Challenges: Accuracy Ergonomics System latency,Augmented Reality,Direct or indirect view of a physical real-world environment whose elements are augme
5、nted by virtual computer-generated sensory input Enhance persons perception of reality,Application: Wikitude,The very first Augmented Reality Browser for smartphone-users Scan surrounding using camera and devices sensors Objects information is displayed in the cam right where the real object is loca
6、ted,Mixed Reality,Merge of real and virtual worlds to produce new environments and visualizations Physical and digital objects co-exist and interact in real time,Application: Virtual therapy,Psychologist treats soldiers with PTSD (Post Traumatic Stress Disorder) PTSD: can not get over from bad thing
7、s happened to him/her Best way to treat PTSD: exposure therapy Go back to the bad thing Go through it gently Talk about what they were feeling,Application: Virtual therapy,Application: Flat World,Mixed reality application for military: combine virtual with real Whole body get involved 4D effects: te
8、mperature, smell, sound Virtual characters can see you and react to your movement You can have flat world in your own home,Application: Flat world,Assignments,Group Group25: PC and MAC 15 Group26: PC and MAC 16 Group27: What is artificial intelligence? Group28: What is expert system? Individual: Write an English article: Applications of artificial intelligence (300 words) Deadline: 2010-11-22,
