This document discusses the history and types of virtual reality. It describes how VR uses computer technology to simulate realistic or imaginative 3D environments and experiences. The document outlines the evolution of VR from flight simulators in the 1950s to commercial systems in the 1980s-1990s. It describes types of VR like immersive, augmented, and desktop. Technologies like head mounted displays, cave automatic virtual environments, and input devices are also summarized. Applications of VR discussed include entertainment, education, training, and medicine. Current challenges and future improvements are noted such as reducing motion sickness and lowering costs.

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2.  Introduction
 History
 Types of VIRTUAL REALITY
 Technologies of VIRTUAL REALITY
 Architecture
 Applications
 Current Problems and Future Work
 Conclusion
 References
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Contents

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Virtual Reality (VR) is the illusion of a
Three-Dimensional, Interactive,
Computer-Generated Reality, where
Sight, Sound, and sometimes even
Touch are simulated to create Pictures,
Sounds, and Objects that actually seem
real.
Introduction

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VR is able to immerse you in a
Computer-Generated World of your
own making: Room, City, The interior
of Human body. With VR, you can
explore any Uncharted Territory of the
Human Imagination.
Introduction

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History of VR :-
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 Virtual Reality
 Immersive VR :-
Completely immerse the user's
personal viewpoint inside the Virtual
3D- World.
The user has No Visual Contact with
the physical world.
Often equipped with a Head Mounted
Display (HMD).

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 Window on World (WOW):-
 Also known as Desktop VR.
 Use of a Monitor to display
the visual world.
 Does Not require Special Hardware.
 Low Cost , Low Performance,
Less Immersion.
Types of Virtual Reality

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Types of Virtual Reality
 Telepresence :-
Real-time Telepresence-
Interaction are Reflected to some real
World objects.
Delayed Telepresence
Interactions are Recorded, and later
Operations are applied to the real-world
object.

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Types of Virtual Reality
 Augmented Reality :-
 The seamless merging of Real space and
Virtual space.
 Integrating the Computer-Generated
Virtual objects into the Physical world
which become in a sense an equal part of
our natural environment.

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 Binocular Omni-Orientation Monitor (BOOM) :-
Technologies of Virtual Reality
 3-D Display device suspended
from a weighted boom that can
move freely.
 Head-coupled stereoscopic
display device.
 Convenient to use.
 Fast and accurate built-in
tracking.

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Technologies of Virtual Reality
 Head Mounted Display(HMD) :-
 A Helmet or a Face mask
providing the visual and auditory
displays.
 Use LCD to display stereo images.
 May include built-in Head-tracker
and Stereo headphones.

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Technologies of Virtual Reality
 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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Technologies of Virtual Reality
Vizard Virtual Reality
Virtual Reality Studio
Sense8 World Tool Kit
Multiverse
 Software's :-

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Input
Processor
Rendering
Processor
Simulation
Processor
visual,
auditory,
haptic,
touch…
Position &
Orientation
Architecture of Virtual Reality
Position and angle is
Integrated with Virtual
world by
Computer Software

15. 15Applications :-
 Entertainment and Movies :-
 360-Degree cameras or VR cameras,
that have the ability to record in all
directions.
 VR cameras are used to create
images and videos that can be viewed
in VR.
 The experience allows users to
interact with the characters and
worlds.

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Applications :-
 Biological :-
 Practice performing surgery.
 Perform surgery on a remote
patient.
 Teach new skills in a safe,
controlled environment

17. 17Applications :-
 GAMES :-
 The use of graphics, sound and
input technology in Video
games can be incorporated into VR.
 The VR Technology gives feedback
through visual, auditory, haptic and
other sensory systems.

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Applications :-
 Education and Training :-
 Provide learners with a Virtual
Environment where they can
develop their skills without the real-
world consequences of failing.
 The fully Immersive training
environment allows to train through
a wide variety of Terrains,
situations and scenarios..

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Current Problems and Future Work :-
 Motion sickness / Simulator sickness
 Low-Accuracy
 Expensive
 Bit lack of integration between application packages.
 Cost-saving
 High-level contact between participants in VR.
 High-Accuracy system

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Conclusion :-
 Visualization of complicated, large data is
helpful for understanding and analysis.
 VR offers us a new way to interact with
computer and real life.
 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.
 The Best of VR is Yet to Come . . .

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References :-
 What is VR? -
( https://en.wikipedia.org/wiki/Virtual_reality )
 Virtual Reality GIF’s -
( http://giphy.com/search/virtual-reality )
 VR News -
( http://www.roadtovr.com/ )
 Type of VR -
( https://en.wikipedia.org/wiki/Types_of_VR )

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