WHAT IS VIRTUAL REALITY?• “Virtual Reality is a way for humans tovisualize, manipulate and interact withcomputers and extremely complex data.”• Virtual reality is often sometimes called asSynthetic Environment, Cyberspaces ArtificialReality, Simulators Technology, etc.
Early UsesLate 1960’s (the main playersin history)• U.S. military radar system& NASA• Ivan Sutherland’s“Sketchpad” for designers• Flight simulators• That cool headgear returns!
Current Uses• Virtual reality warzone stress reliever• VR treatment withkids• Movieentertainment• Video gameentertainment
• Training– Military• Microsoft flight sim?– Scholarly– Medical– Construction– Law Enforcement– Lots more….
Interaction with the environment. User interface. user can see and even feel the shaped surface underhis/her fingertips. Flight simulators and games. CAD/CAE Biomedical Engineering the projects mentioned areuse of virtual reality for viewing of X-RAYs and MRI‘s. Rendering and 3-D lighting, modeling for resourcemanagement.
New technologies have also revealed new problems.VR in medical treatment is going through some growingpains.There are limitations with VR devices as well in regardsto usability.lack of standardization of hardware and protocolsMost troublesome are the side effects it can induce, likedisorientation, dizziness and nausea.People often find navigating in 3-D spaces andperforming actions in free space extremely difficult.practical problems in spatial cognition research
Future of VR?• Future only bound by technological advance– Nanotechnology?– Implants?• U. Washington already researching:– Retina image screening– Nervous system implanting (EEG and EMG)• Unmanned Flight– Gulf War…
Summary Visualization of complicated, large data is helpfulfor understanding and analysis. VR offers us a new way to interact withcomputer. VR enables us to experience the virtual worldthat is impossible in real world. VR is changing our life, eventually VR willincreasingly become a part of our life.15
Virtual reality Modeling Language (VRML)Most exciting is the ongoing developmentof VRML on the World Wide Web. Inaddition to HTML (Hypertext MarkupLanguage), that has become a standardauthoring tool for the creation of homepages, VRML provides three-dimensionalworlds with integrated hyperlinks on theWeb. Home pages become home spaces.
Characteristics Of VRML• Not a programming language like c++ or java• Descriptive (rather than procedural) like HTML• File formats contains human readable and editable ASCIItext