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Presents…Presents…

History , Technology & Future

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Introduction ,Terminology & Concepts Impact of Virtual Reality Devices using VR Simulation Systems CAVE HMD Methods of VR Conclusion

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VR is a technology in which allows the user to interact with a computer-stimulated environment – real or imagined one.

Most current VR environments are primarily visual experiences displayed either on a computer screen or through special or stereoscopic displays.

Some stimulations include additional sensory information such as sound through speakers or headphones.

Users can interact with a virtual environment (virtual artifact) through the use of standard input devices such as the keyboard or mouse or multimodal devices.

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Contd…

The simulations environment can be similar to the real world.

eg: simulations for pilot or combat training.

It can also differ significantly from reality, as in VR games.

VR is often used to describe a wide variety of applications, commonly associated with its immersive, highly visual, 3D environments.

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The Metaphysics of Virtual Reality- Michael Heim.

– Simulation– Interaction– Artificiality– Immersion– Telepresence– Full-body immersion– Network communication

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Origin of the term can traced back to the French playwright, poet, actor and director Antonin Artaud , in his seminal book THE THEATRE AND ITS DOUBLE(1938), Artuad described theatre as “la realite virtuelle ”,a virtual reality in which characters, objects, and images take on the phantasmagoric force of alchemy’s visionary internal dramas”

The concept was popularized in mass media by movies such as BRAINSTORMS and many more.

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Mychilo S.Cline, in his book,

“Power, Madness and Immortality: The Future Of Virtual Reality”

He argues that VR will lead to a number of important changes in human life and activity.

VR will be integrated into daily life and activity and will be used in many human ways.

Techniques will be developed to influence human behavior, interpersonal and cognition (ie.virtual genetics)

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VR enables heritage sites to be recreated extremely accurately, so that the recreations can be published in various media.

This technology can be used to develop virtual replicas of caves, natural environment, old towns, monuments, sculptures and archeological elements.

A video sample of the results of this technology can be viewed in www.virtual-caves.com.

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WHERE ‘VIRTUAL REALITY’ HAS BEEN USED?

Fiction books Television Motion pictures Music videos GAMES

Attractions Fine Arts Marketing Health care Education

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Computer graphics coupled with a common programming language such as C++, Perl, Java or Python.

Some most popular computer graphics:

– OpenGL

– Direct3D

– Java3D

– VRML

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Contd…

Their use will be directly influenced by the systems demands in terms of performance, program purpose and hardware platform.

The use of Multithreading (eg.Posix) can also accelerate 3D performance and enable cluster computing with multi-user interactivity.

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Heavily criticized.

Competition against Ubiquitous Computing.

Headaches due to eye strain.

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Devices Using Virtual Reality

HMD

CAVE (Cave Automatic Virtual Environment)

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BOOM - (Binocular Omni-Orientation Monitor)

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Shared Virtual Environments

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Imitation of some real thing, state of affairs, or process.

Classification :-

Physical Simulation

Interactive Simulation

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Applications of simulators

City Simulators :- tool used by urban planners to understand how cities are likely to evolve in response to various policy decisions

Classroom of the future :- will allow students to enter the clinical years better prepared, and with a higher skill level.

Finance :- In finance , computer simulations are often used for scenario planning.

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In Engineering :- The use of simulation throughout the product lifecycle, has the potential of providing substantial benefits.

Military simulations :- are models in which theories of warfare can be tested and refined without the need for actual hostilities.

Flight simulators :- Flight simulators are often used to train pilots to operate aircraft in extremely hazardous situations.

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Air Combat Simulator – Using Virtual Reality

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Marine simulators :- Ship's bridge simulators Engine room simulators Cargo handling

simulators

Truck simulators :- It replicates the external factors and conditions with which a vehicle interacts enabling a driver to feel as if they are sitting in the cab of their own vehicle

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Cave Automatic Virtual Environment (CAVE)

A room with projections on all walls, floor and ceiling

The users wear shutter glasses to get a 3D view of the world.

The users are able to move and control the environment with some kind of input mechanism– Camera– Device in hand

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3D VIDEO Eyewear

Winner Of A 2005 & 2006 Consumer Electronics Show Design Award

VR Price: $499.00

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GENERAL CHARACTERISTICS

Projection screens

Electro magnetic sensor

Made of steel

Computer control

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SOFTWARES USED IN VR

Cavelib

VR Juggler

Cove

Cave UT

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DEVELOPMENT

Cost & size

45% inclination

One projector

No special room

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APPLICATIONS

In Engineering Field

Machine Design

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HMD or Helmet Mounted Display is a display device worn on the head/as part of head that has a small display device in front of eyes

MonocularBinocular

Head Mounted Display ( HMD)

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Two Or More Small Displays

Lenses& Semitransparent Mirrors

Eyeglasses

LCDs & Liquid Crystal On Silicon

Contents of HMD

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HMDs differ in the way they can display

Just a computer generated display

Show live images

A combination of both

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Major HMD Applications Includes Military, Governmental (fire, police) & Civilian/Commercial

(Medicine, Video Gaming, Sports)

AviationEngineering & MedicineGamingSports

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CAE TampaCanonCyber MindSony

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Methods Of VR

Simulation-based VR

Avatar image-based VR

Projector-based VR

Desktop-based VR

True Immersive Virtual Reality

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Virtual reality will be integrated into daily life and activity and will be used in various human ways.

It has long been feared that Virtual Reality will be the last invention of humans, as once simulations become cheaper and more widespread, no one will ever want to leave their "perfect" fantasies.