Virtual Reality virtual reality Types, Functioning (Working), Advantages, Disadvantages, Futureoutlook

1. VirtualWorld
Group 11
Sahith Krishna
Aditya
Arun Gokul
Nikhil Upadyaya
Purva Khetan

2. Contents
• Introduction
• History
• Types
• Working
• Applications
• future

3. Introduction
• Virtual worlds are persistent virtual environments in which people
experience others as being there with them - and where they can
interact with them.

4. History
• 1860: Virtual reality can trace its roots to the 1860s, when 360-
degree art through panoramic murals began to appear.
• 1966 : Thomas A. Furness III introduces a visual flight simulator for
the Air Force.
• 1968 : Ivan Sutherland created augmented reality (AR) head-
mounted display (HMD) system.

5. History
• 1991 : Sega announces the Sega VR headset for arcade games and
the Mega Drive console
• 2007: Google introduces Street View, a service that shows panoramic
views of an increasing number of worldwide positions such as roads,
indoor buildings and rural areas. It also features a stereoscopic 3D
mode.
• 2014: Facebook purchases a company that makes virtual reality
headsets, Oculus VR, for $2 billion.

6. Non-immersive systems
• Large display, but doesn’t
surround the user.
• Desktops, LCD TVs
• Ex: Playstation
Virtual Reality Systems

7. Augmented reality
• Stay in real world, but
see simulated objects
• customizable

8. Motion tracking
 Combination of computer
chips, sensors and cameras to
record humans in motion and
create digital doppelgangers
that move the same way.
 Designed for head and hand
tracking in VR games,
simulations, animations, and
visualizations.

10. 10
Cave AutomaticVirtual 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.

11. 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

12. 12
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.

13. Leap Motion Control
• Electric Field sensors
• No Gloves needed
• Simple hand gestures

14. 14
Technologies of VR--Software
 VRML(Virtual Reality Modeling Language)
 Standard language for interactive simulation within the
World Wide Web.
 Programming libraries. (C & C++).
 Allows to create "virtual worlds“
 VR models can be viewed by Netscape or IE with a browser
plug-in.

15. 15
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

16. 16
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.

17. 17
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.

18. 18
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.

19. 19
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.

20. 20
Applications
 Entertainment
• More vivid
• Move exciting
• More attractive

21. 21
Applications (Cont’d)
 Medicine
 Practice performing surgery.
 Perform surgery on a remote patient.
 Teach new skills in a safe, controlled environment.

22. 22
Applications (Cont’d)
oManufacturing
• Easy to modify
• Low cost
• High efficient

23. 23
Applications (Cont’d)
oEducation & Training
• Driving simulators.
• Flight simulators.
• Ship simulators.
• Tank simulators.

24. 24
Current problems
 Cybersickness / simulator sickness
 Low-fidelity
 Expensive
 Lack of integration between application
packages

25. The Future ofVirtual
Reality
• Virtual Reality is a growing industry
• PC and specialized hardware are getting better, faster and
cheaper because of development in VR.
• Maybe 3D user interfaces will replace the windows based ones?
• Huge demand for VRML programmers in near future.
• Revolution in gaming industries

26. 26
Summary
oVisualization of complicated, large data is helpful for understanding
and analysis.
oVR offers us a new way to interact with computer.
oVR enables us to experience the virtual world that is impossible in
real world.
oVR is changing our life, eventually VR will increasingly become a part
of our life.

27. Group 11
Sahith Purva Arun Aditya Upadyaya