virtual reality(main)

7/29/2019 Virtual Reality(MAIN)

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BY

PRAVEENA.A

UMA MAHESHWARI.G

ANUPRIYA.V


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VIRTUAL REALITY

Virtual reality (VR) is a technology whichallows a user to interact with a computer-simulated environment, be it a real orimagined one.

Virtual reality has gone by many other namesbesides virtual environments. Other terms forvirtual reality include cyberspace (a word

invented by science fiction author WilliamGibson), artificial reality, augmented realityand telepresence.
http://en.wikipedia.org/wiki/Computer-simulatedhttp://en.wikipedia.org/wiki/Computer-simulatedhttp://computer.howstuffworks.com/augmented-reality.htmhttp://computer.howstuffworks.com/augmented-reality.htmhttp://computer.howstuffworks.com/augmented-reality.htmhttp://computer.howstuffworks.com/augmented-reality.htmhttp://en.wikipedia.org/wiki/Computer-simulatedhttp://en.wikipedia.org/wiki/Computer-simulatedhttp://en.wikipedia.org/wiki/Computer-simulated


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INTRODUCTION

Visualize , Manipulate , Interact withcomputer and complex data

Realistic representation of physical

environment Experiences new things that are

impossible

Needs sensors & transducers to monitorusers action and feedback signal

Immerse the participant in virtual world

Cognitive effects for products.


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REQUIREMENTS

Computer for visual and sound effects

with sensory perception

Fast response, wide range of sensoryinputs

High speed rendering of multimedia

objects Sustained performance demands on

hardware


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Tool to support a design

Product manufacturing

Product maintenanceCAD/CAM

Neural networks

Heritage and ArchaeologyVirtual Reality Reproduction

Mass media

Fiction books

TelevisionGames

Health care education

APPLICATIONS


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US Army Research Lab's ODT with CAVE Graphics


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Using virtual therapy to treat a patients fear of flying.


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SHARED VIRTUAL

ENVIRONMENT

Needs BOOM device, CAVE system,

head mounted display , special

goggles, data gloves

Presents virtual human (avatar) to

other participants

People in various place can interactand communicate in visual world


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SHARED VIRTUAL ENVIRONMENT


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A BOOM Display used by NASA to emulate space


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The Nintendo Power Glove used

in virtual reality gaming


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A data suit to provide user

input


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VirtuSphere - a virtual reality unit that allows the user to move freely in any direction.VirtuSphere can serve many purposes, including exercise, video gaming, militarytraining, and virtual museum tours.

The VirtuSphere is a creation of Nurulla and Ray Latypov, whose company, VirtuSphereInc, is based in Issaquah, Washington.
http://en.wikipedia.org/wiki/Issaquah,_Washingtonhttp://en.wikipedia.org/wiki/Issaquah,_Washingtonhttp://en.wikipedia.org/wiki/Issaquah,_Washingtonhttp://en.wikipedia.org/wiki/Issaquah,_Washington


14/28Classic Virtual reality HMD with data glove

A head-mounted

display


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COMPONENTS

VIRTUAL SOFTWARE

Allows user to develop case tools

Uses any software engineeringmethodology

VIRTUAL HARDWARE

Provides simple and easy interfacefor VR

Nowadays potential market for VR

applications is huge


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VR DEVICES

Color head coupled display

Monochrome head mounted display

Data glove

Virtual keyboard

Virtual screen


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VIRTUAL KEYBOARD

Based on optical recognition enablesto tap images of the keys

Uses infrared and laser technology

Feed into compatible PDA, smartphone, laptop or PC

Invisible circuit

Full size virtual QWERTY keyboard


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VIRTUAL KEYBOARD


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FEATURES

Small size

Light weight

Rechargeable battery

Power save mode

Audible click feature


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TECHNICAL DETAILS

Windows 98, 2000, NT, XP, Palm OS, PPC

Light source Red diode laser

Non reflective, opaque surface

Multiple keystroke support


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ADVANTAGES

Quick & Efficient

Overcome the difficulties in tiny

keyboard & handwriting recognition

Enhances communication, computing

& environment

Cost effective

Reduces maintenance cost


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APPLICATION

Space saving

Industrial environment

Medical environment

Home

transport


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SXI CELLPHONE WITH VIRTUAL KEY BOARD


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VIRTUAL SCREEN

User defined set of active application

Resides in status bar in MacOS X

If user changes VS, applications that

are visible is hidden

Hidden application that belongs to new

virual screen are shown


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FUTURE DEVELOPMENTS

It is unclear exactly where the future of virtual

reality is heading. In the short run, the graphicsdisplayed in the HMD will soon reach a point of

near realism. The audio capabilities will move into a

new realm of three dimensional sound. This refers

to the addition of sound channels both above andbelow the individual or a Holophony approach.

Within existing technological limits, sight and sound

are the two senses which best lend themselves tohigh quality simulation. There are however attempts

being currently made to simulate smell.
http://en.wikipedia.org/wiki/Holophonyhttp://en.wikipedia.org/wiki/Holophony


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Tele-immersion will allow us to manipulate holographic

projections as if they were real objects.


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CONCLUSION

Virtual H/W is commercially available

Can enter into the desired environment

though it is impossible in real world

Both virtual H/W and S/W are handledeasily

Cost effective

Used to represent industrial components,architectural projects and civil engg

structures


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