Virtual reality allows users to visualize and interact with computer-generated environments and complex data. It has developed from early head-mounted displays and simulators to include a variety of immersive, non-immersive, and augmented reality experiences. Virtual reality has applications in entertainment, medicine, manufacturing, education and training by creating interactive and realistic virtual environments. While VR technology continues to advance, challenges remain regarding usability, standardization, and potential health effects.

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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