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Welcome to Virtual Reality Technology

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Electrical and Computer Engineering Department Welcome to Virtual Reality Technology Grigore C. Burdea Ph.D. Director, Human Machine Interface Laboratory, – PowerPoint PPT presentation

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Title: Welcome to Virtual Reality Technology


1
Welcome to Virtual Reality Technology
Electrical and Computer Engineering Department
  • Grigore C. Burdea Ph.D.
  • Director, HumanMachine Interface Laboratory,
  • CAIP Center, Rutgers University.
  • http//www.caip.rutgers.edu/vrlab/

2

Grading Criteria Quizzes 10, Midterm
45 Final 45 Laboratory assignments graded
separately
3
Textbook Burdea and Coiffet, Virtual Reality
Technology, 2nd Edition, Wiley, 2003
4

Laboratory Hardware
5
Virtual Reality - Introduction

Class notes (PowerPoint) will be posted on the
web http//www.caip.rutgers.edu/vrlab/vrclass
6

Introduction
7

What is Virtual Reality?
8
Introduction
It is not augmented reality.
9
Introduction
What is Virtual Reality? A high-end user
interface that involves real-time simulation and
interaction through multiple sensorial channels.
(vision, sound, touch, smell, taste)
10
Introduction
11
Introduction
Sensorama Simulator, US Patent 3,050,870, 1962
12
1963 Ivan Sutherland's doctoral theses
SKETCHPAD stereo HMD, position tracking, and a
graphics engine. 1966 Tom Furness display
systems for pilots 1967 Brooks developed
force feedback GROPE system 1977 Sandin
and Sayre invent a bend-sensing glove 1979
Raab et al Polhemus tracking system 1989
Jaron Lanier (VPL) coins the term virtual
reality 1994 VR Society formed
VR Short History
13
Introduction
Ivan Sutherlands HMD (1966)
14
Introduction
Brookss Grope Project (1977)
15
Introduction
NASA a pioneer in VR
The first complete system was developed by NASA
Virtual Visual Environmental Display (VIVED
early 80s they prototyped the LCD HMD Became
Virtual Interface Environment Workstation
(VIEW) 1989
16
Introduction
Why NASA?
Large simulation and training needs Could not
send humans to other harm Relatively small
budgets.
17
Introduction
NASA VIEW system (1989)
18
Introduction
NASA VIEW system (1992)
19
Introduction
Towards Commercialization The first commercial
VR systems appeared in the late 80s produced by
VPL Co. (California) The VPL Data Glove and
The VPL Eye Phone HMD
20
Introduction
The VPL DataGlove (1987)
21
Introduction
The Matel PowerGlove (1989)
22
The first commercial VR glove for entertainment
Mattel Power Glove 50 (1989)
23
Early HMDs were massive
The Flight Helmet (ca. 1990) weighs 5 lbs
24
and had poor resolution
25
Introduction
  • Virtual Reality in the early 90s.
  • Emergence of first commercial Toolkits
  • WorldToolKit (Sense8 Co., now Engineering
    Animation Inc.)
  • VCToolkit (Division Ltd., UK)
  • Virtual Reality Toolkit VRT3 (Dimension
    Ltd./Superscape, UK)
  • Cyberspace Developer Kit (Autodesk)

26
Introduction
Superscape VRT3 Development System
27
Introduction
  • Virtual Reality in the early 90s.
  • Emergence of first non-commercial toolkit
  • Rend386
  • Later Virtual Reality Modeling Language (VRML
    1.0)
  • Later still Java and Java 3D

28
Introduction
Scene created with Rend386
29
Introduction
  • Virtual Reality in the early 90s.
  • PC boards still very slow (7,000 35,000
    polygons/sec)
  • First turnkey VR system Provision 100 (Division
    Ltd.)
  • Emergence of faster graphics rendering
    architectures at UNC Chapel Hill
  • Pixel Planes
  • Later Pixel Flow

30
Introduction
Stride PC graphics accelerator
35,000 polygons/sec 26,000 (with two
co-processors)/card Require up to 6 PC slots for
stereo version
31
Introduction
Provision 100 VR turnkey system (Division Ltd.,
UK)
35,000 polygons/sec 64,000 (including texture
generator, tracker, 3-D audio, HMD and software)
32
Introduction
Provision 100 VR turnkey system (Division Ltd.,
UK)
33
Introduction
1 Million triangles/sec
Pixel Planes 5 VR system (UNC)
34
Rendering speed comparison SGI vs. PCs
35
Introduction
VR 2001 prices PC - 5k HMD
1k Trackball 1k Toolkit 0k Total 7k
VR Marketplace (estimated in 1994)
36
Laboratory VR Station prices (2002)
PRODUCT Price/user of Budget
PC 1.7 GHz FireGL 2 accelerator 2,347 48
Polhemus 3D tracker 4 receivers 1,823 37
5DT sensing glove five-sensor version 482 10
Stereo Glasses wired 179 3
Force feedback Joystick 88 2
Java and Java3D - -
VRML - -
Total 4,919 100
37
VR Market growth
38
The key elements of a VR System
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