of VR system
Applications of VR
Current problems & Future work
Summary
Reference
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Презентация на тему Virtual reality
Содержание
- 2. OutlineIntroductionThe history of VRTypes of VRTechnologies of
- 3. IntroductionWhat is Virtual Reality(VR)? Virtual Reality
- 4. Introduction (Cont’d)Why VR? VR is able to immerse
- 5. Brief HistoryIn 1950s, flight simulators were built
- 6. Types of VR SystemWindows on World(WoW) Also
- 7. Types of VR System(Cont’d)TelepresenceA variation of visualizing
- 8. Types of VR System(Cont’d)Mixed Reality(Augmented Reality)The seamless
- 9. VR Examples (Cont’d)Telepresence VR
- 10. VR Examples (Cont’d)Augmented VR
- 11. VR Examples (Cont’d)Distributed VR
- 12. Technologies of VR--HardwareHead-Mounted Display (HMD) A Helmet
- 13. Technologies of VR--HardwareBinocular Omni-Orientation Monitor (BOOM)Head-coupled stereoscopic
- 14. Technologies of VR--HardwareCave Automatic Virtual Environment (CAVE)
- 15. Technologies of VR--HardwareData GloveOutfitted with sensors on
- 16. Technologies of VR--HardwareControl Devices Control virtual objects in 3 dimensions.
- 17. Technologies of VR--SoftwareToolkitsProgramming libraries. Provide function libraries
- 18. Technologies of VR--SoftwareSoftware packages available in marketMultiverse
- 19. Technologies of VR--SoftwareVRML(Virtual Reality Modeling Language)Standard language
- 20. Architecture of VR System Input Processor, Simulation
- 21. Components of VR System (Cont’d)Input ProcessorControl the
- 22. Components of VR System (Cont’d)Simulation ProcessorCore of
- 23. Components of VR System (Cont’d)Rendering ProcessorCreate the
- 24. Components of VR System (Cont’d)World Database (World
- 25. ApplicationsEntertainment More vividMove excitingMore attractive
- 26. Applications (Cont’d)Medicine Practice performing surgery.Perform surgery on
- 27. Applications (Cont’d)ManufacturingEasy to modifyLow costHigh efficient
- 28. Applications (Cont’d)Education & TrainingDriving simulators.Flight simulators.Ship simulators.Tank simulators.
- 29. Current problems & Future workCybersickness / simulator
- 30. SummaryVisualization of complicated, large data is helpful
- 31. Reference[1] What is Virtual Reality?, http://vr.isdale.com/WhatIsVR/frames/WhatIsVR4.1.html.[2] Augumented
- 32. Скачать презентацию
- 33. Похожие презентации
OutlineIntroductionThe history of VRTypes of VRTechnologies of VRArchitecture of VR systemApplications of VRCurrent problems & Future workSummary Reference
![Reference[1] What is Virtual Reality?, http://vr.isdale.com/WhatIsVR/frames/WhatIsVR4.1.html.[2] Augumented and Mixed Reality, http://www.mic.atr.co.jp/~poup/research/ar/.[3] Virtual](/img/tmb/15/1404313/b81a0a81f7b19c6ba684c6153a9411b3-720x.jpg "Virtual reality")
Слайд 2
Outline
Introduction
The history of VR
Types of VR
Technologies of VR
Architecture
of VR system
Reference
Слайд 3
Introduction
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..
Слайд 4
Introduction (Cont’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.
Слайд 5
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.
Слайд 6
Types 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).
Слайд 7
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.
Слайд 8
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.
Слайд 12
Technologies of VR--Hardware
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
Слайд 13
Technologies of VR--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.
Слайд 14
Technologies of VR--Hardware
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.
Слайд 15
Technologies of VR--Hardware
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.
Слайд 17
Technologies of VR--Software
Toolkits
Programming libraries.
Provide function libraries (C
& C++).
Authoring systems
Complete programs with graphical interfaces for creating
worlds without resorting to detailed programming.
Слайд 18
Technologies of VR--Software
Software packages available in market
Multiverse (Freeware)
Virtual Reality Studio ($100)
Sense8 World Tool Kit (WTK) (over
$1000)Autodesk Cyberspace Development kit (over $1000)
Слайд 19
Technologies of VR--Software
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.
Слайд 20
Architecture of VR System
Input Processor, Simulation Processor,
Rendering Processor and World Database.
Input
Processor
Rendering
Processor
World Database
Simulation
Processor
visual, auditory, haptic,
touch…Position &
Orientation
Слайд 21
Components of VR System (Cont’d)
Input Processor
Control the devices
used to input information to the computer. The object
is to get the coordinate data to the rest of the system with minimal lag time.Keyboard, mouse, 3D position trackers, a voice recognition system, etc.
Слайд 22
Components of VR System (Cont’d)
Simulation Processor
Core of a
VR system.
Takes the user inputs along with any tasks
programmed into the world and determine the actions that will take place in the virtual world.
Слайд 23
Components of VR System (Cont’d)
Rendering Processor
Create the sensations
that are output to the user.
Separate rendering processes
are used for visual, auditory, haptic and other sensory systems. Each renderer take a description of the world stat from the simulation process or derive it directly from the World Database for each time step.
Слайд 24
Components of VR System (Cont’d)
World Database (World Description
Files)
Store the objects that inhabit the world, scripts that
describe actions of those objects.
Слайд 26
Applications (Cont’d)
Medicine
Practice performing surgery.
Perform surgery on a
remote patient.
Teach new skills in a safe, controlled environment.
Слайд 28
Applications (Cont’d)
Education & Training
Driving simulators.
Flight simulators.
Ship simulators.
Tank simulators.
Слайд 29
Current problems & Future work
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
Слайд 30
Summary
Visualization of complicated, large data is helpful for
understanding and analysis.
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.
Слайд 31
Reference
[1] What is Virtual Reality?, http://vr.isdale.com/WhatIsVR/frames/WhatIsVR4.1.html.
[2] Augumented and
Mixed Reality, http://www.mic.atr.co.jp/~poup/research/ar/.
[3] Virtual Reality Applications, http://vresources.jump-gate.com/applications/applications.shtml.
[4] K.-P. Beier.
Virtual Reality: A short Introduction. http://www-vrl.umich.edu/intro/[5] Franchi,J. Vertual Reality: An Overview. ERIC Digest, June 1995
