Virtual reality

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Virtual RealityVirtual Reality
Prepared by :- Ajay Jha
Exam no :- 2845
SDJ International college
TY BCA(sem-6)

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OutlineOutline
 Introduction
 The history of VR
 Types of VR
 Technologies of VR
 Applications of VR
 Current problems & Future work
 Conclusion
 Reference

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IntroductionIntroduction
 What is Virtual Reality(VR)?
Virtual Reality refers to a high-end user
interface that involves real-time
simulation and interactions through
multiple sensorial channels.
.

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IntroductionIntroduction
((CCont’d)ont’d)
 Why VR?
VR is able to immerse you in a
computer-generated world of your own
making: a room, a city, the interior of
human body. With VR, you can explore
any uncharted territory of the human
imagination.

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Brief HistoryBrief History
 In 1950s, flight simulators were built by US
Air Force to train student pilots.
 In 1965, a research program for computer
graphics called “The Ultimate Display” was
laid out.
 In 1988, commercial development of VR
began.
 In 1991, first commercial entertainment VR
system "Virtuality" was released.

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Types of VR SystemTypes of VR System
 Windows on World(WoW)
– Also called Desktop VR.
– Using a conventional computer monitor to
display the 3D virtual world.
 Immersive VR
– Completely immerse the user's personal viewpoint inside
the virtual 3D world.
– The user has no visual contact with the physical word.
– Often equipped with a Head Mounted Display (HMD).

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Types of VR System(Cont’d)Types of VR System(Cont’d)
 Telepresence
– A variation of visualizing complete computer
generated worlds.
– Links remote sensors in the real world with the senses of
a human operator. The remote sensors might be located
on a robot. Useful for performing operations in dangerous
environments.

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Types of VR System(Cont’d)Types of VR System(Cont’d)
 Mixed Reality(Augmented Reality)
– The seamless merging of real space and virtual space.
– Integrate the computer-generated virtual objects into the
physical world which become in a sense an equal part of
our natural environment.
Distributed VR
– A simulated world runs on several computers which are
connected over network and the people are able to
interact in real time, sharing the same virtual world.

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VR ExamplesVR Examples (Cont’d)(Cont’d)
 Telepresence VR

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VR ExamplesVR Examples (Cont’d)(Cont’d)
 Distributed VR

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Technologies of VR--Technologies of VR--HardwareHardware
 Head-Mounted Display (HMD)
− A Helmet or a face mask providing the visual and auditory
displays.
− Use LCD or CRT to display stereo images.
− May include built-in head-tracker and stereo headphones

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 Binocular Omni-Orientation Monitor (BOOM)
− Head-coupled stereoscopic display device.
− Uses CRT to provide high-resolution display.
− Convenient to use.
− Fast and accurate built-in tracking.

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 Cave Automatic Virtual Environment (CAVE)
− Provides the illusion of immersion by projecting stereo
images on the walls and floor of a room-sized cube.
− A head tracking system continuously adjust the stereo
projection to the current position of the leading viewer.

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 Data Glove
– Outfitted with sensors on the fingers as well as an overall
position/orientation tracking equipment.
– Enables natural interaction with virtual objects by hand gesture
recognition.

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 Control Devices
– Control virtual objects in 3 dimensions.

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Technologies of VR--Technologies of VR--SoftwareSoftware
 Software packages available in market
– Multiverse (Freeware)
– Virtual Reality Studio ($100)
– Sense8 World Tool Kit (WTK) (over $1000)
– Autodesk Cyberspace Development kit (over $1000)

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Technologies of VR--Technologies of VR--SoftwareSoftware
 VRML(Virtual Reality Modeling Language)
− Standard language for interactive simulation
within the World Wide Web.
− Allows to create "virtual worlds" networked via
the Internet and hyperlinked with the World
Wide Web.
− Aspects of virtual world display, interaction and
internetworking can be specified using VRML
without being dependent on special gear like
HMD.
– VR models can be viewed by Netscape or IE with a
browser plug-in.

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ApplicationsApplications
 Entertainment
– More vivid
– Move exciting
– More attractive

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ApplicationsApplications (Cont’d)(Cont’d)
 Medicine
− Practice performing surgery.
− Perform surgery on a remote patient.
− Teach new skills in a safe, controlled environment.

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 Manufacturing
– Easy to modify
– Low cost
– High efficient

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

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Current problems &Current problems & FutureFuture workwork
 Cybersickness / simulator sickness
 Low-fidelity
 Expensive
 Lack of integration between application packages
 High-fidelity system
 Cost-saving
 Collaborative
 High-level contact between participants in distributed
VR

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ConclusionConclusion
 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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Comments & Questions?Comments & Questions?
Any questions...?

Virtual reality

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