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Welcome to the world of
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Transcript of Welcome to the world of
Welcome to the world of
G.V.Ram Mohan Reddy
TABLE OF CONTENTS AN INTRODUCTION TO
VIRTUAL REALITY
WORKING OF VIRTUAL REALITY
TYPES OF VIRTUAL REALITY
ACHIEVING VIRTUAL REALITY
VIRTUAL REALITY SYSTEMS
ARCHITECTURE OF VR SYSTEM
APPLICATIONS
CONCLUSION
AN INTRODUCTION TO VIRTUAL REALITY
The term virtual reality is an oxymoron, which was coined by JARON LANIER founder of V P L RESEARCH.
Virtual Reality is one such technology, which would make a person visualize, listen and feel other senses almost like human beings with the help of computer and a large number of technologies.
Virtual Reality is a way to humans to visualize, manipulate and interact with computers and extremely complex data.
Brief 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.
Principle of ‘Learning’:
I hear , I forgetI see , I remember
I experience , I understand
VR makes us immersed in the virtual world, which seems like the real world, making us experience and thereby understand things.
Working of Virtual RealityView point Angular
movements
Turn
tilt
Roll
Directional movements
forward or
backward
left or right
up or down
TYPES OF VIRTUAL REALITY
IMMERSIVE VR
NON-IMMERSIVE
VR
Immersive virtual reality
Non immersive virtual reality is just a television monitor or computer
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
Achieving Virtual Reality
Using
software
Using hardware By mapping
and stitching
technologies
By using software Rendering:
Programming: VRML v2.0
By using hardware
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.
By mapping & stitching technologies
Position tracking:
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.
Types of VR Systems 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).
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.
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.
Architecture of VR System Input Processor, Simulation Processor,
Rendering Processor and World Database.
InputProcessor
RenderingProcessor
World Database
SimulationProcessor
visual, auditory, haptic, touch…
Position &Orientation
Applications Virtual reality in war strategies Virtual reality in cockpit simulation Virtual reality in Education & Training Virtual reality in medical applications Virtual reality in designing aspect Virtual reality in web development
Virtual Reality in war strategies
Simnet is the first war related virtual reality application.
Virtual Reality in cockpit simulation:
Education & Training Driving simulators. Flight simulators. Ship simulators. Tank simulators.
Virtual Reality in medical applications:
- Practice performing surgery.- Perform surgery on a remote patient.- Teach new skills in a safe, controlled environment.
Virtual reality in designing aspects Design of conceptual cars Low time consuming & cheaper prototypes
Virtual reality in web development
Massive construction on-line http:/www.bangalorebest.com/virtualcity/ index.asp Many other Virtual City Tours are
available.
Yesterday, Virtual Reality was a science fiction fantasy!!!
Today it is a research topic in laboratories and amusements parks…And, Tomorrow it will certainly replace our televisions, computers!!!
Concluding….
About the only thing that does seem certain about VR is that it will grow and develop.
And as the technology matures, it will become better,
cheaper, and more accessible.
Furthermore, the networks that link computers will expand, making it possible for VR to weave its way
into our daily lives.
Any queries…