V I R T U A L

R E A L I T Y

D.J.R Group OF Institutions

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.

VIRTUAL REALITY: STEPS OF DEVELOPMENT

1. HMD—helmets 2. BOOM—BinocularOmni-Orientation Monitor 3. CAVE—CAVE Automatic Virtual Environment4. 3D VIDEO Eyewear5. Input devise, Output Devise6. Hardware7. Software

Immersive

Non - immersive

-> Augmented

-> Text-based Desktop (Window on a World)

Video Mapping Telepresence

Mixed Reality

TYPES

Applications Entertainment

– More vivid– Move exciting– More attractive

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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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Applications (Cont’d)

Manufacturing– Easy to modify– Low cost– High efficient

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Applications (Cont’d)

Education & Training– Driving simulators.– Flight simulators.– Ship simulators.– Tank simulators.

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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!

Current Uses

• Virtual reality war zone stress reliever

• VR treatment with kids

• Movie entertainment

• Video game entertainment

• Training– Military

• Microsoft flight sim?

– Scholarly– Medical– Construction– Law Enforcement– Lots more….

ADVANTAGE

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.

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 protocolsMost 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

DISADVANTAGE

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 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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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.

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