Virtual Reality is a way for humans to visualize, manipulate and interact with computers and extremely complex data.

2. WHAT IS VIRTUAL REALITY?
• “Virtual Reality is a way for humans to
visualize, manipulate and interact with
computers and extremely complex data.”
• Virtual reality is often sometimes called as
Synthetic Environment, Cyberspaces Artificial
Reality, Simulators Technology, etc.

3. VIRTUAL REALITY: STEPS OF
DEVELOPMENT
1. HMD—helmets
2. BOOM—BinocularOmni-Orientation Monitor
3. CAVE—CAVE Automatic Virtual Environment
4. 3D VIDEO Eyewear
5. Input devise, Output Devise
6. Hardware
7. Software

4.  Immersive
 Non - immersive
-> Augmented
-> Text-based
 Desktop (Window on a World)
 Video Mapping
Telepresence
Mixed Reality

5. Applications
 Entertainment
– More vivid
– Move exciting
– More attractive
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6. Applications (Cont’d)
 Medicine
Practice performing surgery.
Perform surgery on a remote patient.
Teach new skills in a safe, controlled environment.
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7. Applications (Cont’d)
 Manufacturing
– Easy to modify
– Low cost
– High efficient
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8. Applications (Cont’d)
 Education & Training
– Driving simulators.
– Flight simulators.
– Ship simulators.
– Tank simulators.
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9. Early Uses
Late 1960’s (the main players
in history)
• U.S. military radar system
& NASA
• Ivan Sutherland’s
“Sketchpad” for designers
• Flight simulators
• That cool headgear returns!

10. Current Uses
• Virtual reality war
zone stress reliever
• VR treatment with
kids
• Movie
entertainment
• Video game
entertainment

11. • Training
– Military
• Microsoft flight sim?
– Scholarly
– Medical
– Construction
– Law Enforcement
– Lots more….

12.  Interaction with the environment.
 User interface.
 user can see and even feel the shaped surface under
his/her fingertips.
 Flight simulators and games.
 CAD/CAE
 Biomedical Engineering the projects mentioned are
use of virtual reality for viewing of X-RAY's and MRI‘s.
 Rendering and 3-D lighting, modeling for resource
management.

13. New technologies have also revealed new problems.
VR in medical treatment is going through some growing
pains.
There are limitations with VR devices as well in regards
to usability.
lack of standardization of hardware and protocols
Most troublesome are the side effects it can induce, like
disorientation, dizziness and nausea.
People often find navigating in 3-D spaces and
performing actions in free space extremely difficult.
practical problems in spatial cognition research

14. 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…

15. Summary
 Visualization of complicated, large data is helpful
for understanding and analysis.
 VR offers us a new way to interact with
computer.
 VR enables us to experience the virtual world
that is impossible in real world.
 VR is changing our life, eventually VR will
increasingly become a part of our life.
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18. Virtual reality Modeling Language (VRML)
Most exciting is the ongoing development
of VRML on the World Wide Web. In
addition to HTML (Hypertext Markup
Language), that has become a standard
authoring tool for the creation of home
pages, VRML provides three-dimensional
worlds with integrated hyperlinks on the
Web. Home pages become home spaces.

19. Characteristics Of VRML
• Not a programming language like c++ or java
• Descriptive (rather than procedural) like HTML
• File formats contains human readable and editable ASCII
text