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Welcome to 14:332:376 Virtual Reality and 16:332:571 Virtual Reality Technology Spring 2012 Grigore C. Burdea Ph.D. Professor Director,

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Presentation on theme: "Welcome to 14:332:376 Virtual Reality and 16:332:571 Virtual Reality Technology Spring 2012 Grigore C. Burdea Ph.D. Professor Director,"— Presentation transcript:

1 Welcome to 14:332:376 Virtual Reality and 16:332:571 Virtual Reality Technology Spring 2012 Grigore C. Burdea Ph.D. Professor Director, Tele-Rehabilitation Institute Electrical and Computer Engineering Department

2 Class web site: https://sakai.rutgers.edu/portal Textbook site:

3 Grading Criteria (376): Quizzes 20%, Midterm 40% Final 40% Attendance penalty – one letter grade lost for 4 absences. Midterm and Final are mandatory to pass Cheating is an automatic F. All exams and quizzes are closed books/notes/etc. Quizzes are announced. Laboratory assignments graded separately (for 378 – co req) TA Mr. Timothy Phan

4 Grading Criteria (571): Quizzes 10%, Midterm 25% Final 25% Laboratory 40% Attendance penalty – one letter grade lost for 4 absences. Midterm, Final and Laboratory Term Project Mandatory to pass. Quizzes announced, Cheating results in an F.

5 Textbook: Burdea and Coiffet, Virtual Reality Technology, 2 nd Edition, Wiley, 2003

6 Textbook web site:

7

8 Laboratory Hardware

9 Updated class notes (PowerPoint) will be posted on the web https://sakai.rutgers.edu/portal Quiz and Exam Solution on Sakai Supplemental materials, surveys, links to companies and labs on the textbook site. Virtual Reality - Introduction

10 Topics

11 Introduction

12 What is Virtual Reality?

13 It is not augmented reality…. Introduction

14 What is Virtual Reality? “A high-end user-computer interface that involves real-time simulation and interaction through multiple sensorial channels.” (vision, sound, touch, smell, taste)” Introduction

15 Introduction

16 Sensorama Simulator, US Patent #3,050,870, 1962 Introduction

17 VR Short History Ivan Sutherland's doctoral theses: SKETCHPAD: stereo HMD, position tracking, and a graphics engine Tom Furness: display systems for pilots; Brooks developed force feedback GROPE system;

18 Introduction Ivan Sutherland’s HMD (1966+)

19 Introduction Brooks’s Grope Project (1977)

20 VR Short History 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

21 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 Introduction NASA … a pioneer in VR

22 NASA VIEW system (1992) Introduction

23 Large simulation and training needs; Could not send humans to other planets; Relatively small budgets. Introduction Why NASA?

24 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 Introduction

25 The VPL DataGlove (1987) cost $8,500 Introduction

26 The Matel PowerGlove (1989) Introduction

27 The first commercial VR glove for entertainment – Mattel Power Glove $50 (1989)

28 The Flight Helmet (ca. 1990) weighs 5 lbs Early HMDs were massive

29 …and had poor resolution

30 Virtual Reality in the early 90s…. Emergence of first commercial Toolkits: WorldToolKit (Sense8 Co.); VCToolkit (Division Ltd., UK); Virtual Reality Toolkit VRT3 (Dimension Ltd./Superscape, UK); Cyberspace Developer Kit (Autodesk) Introduction

31 Superscape VRT3 Development System

32 Virtual Reality in the early 90s…. Emergence of first non-commercial toolkits: Rend386; Later Virtual Reality Modeling Language (VRML 1.0); Later still Java and Java 3D; Introduction

33 Scene created with Rend386 Successor is AVRIL ("A Virtual Reality Interface Library“) C library for authoring. Created at U. Waterloo, Canada ece.uwaterloo.ca/~broehl/avril.html

34 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”; Introduction

35 Stride PC graphics accelerator 35,000 polygons/sec; $26,000 (with two co- processors)/card Require up to 6 PC slots for stereo version

36 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)

37 Introduction Pixel Planes 5 VR system (UNC) ~ 1 Million triangles/sec;

38 Rendering speed comparison SGI vs. PCs xBox Million poly/sec 2005

39 Laboratory VR Station prices (2002) PRODUCT Price/user% of Budget PC 1.7 GHz FireGL 2 accelerator 2,34748 Polhemus 3D tracker 4 receivers 1, DT sensing glove five-sensor version Stereo Glasses wired1793 Force feedback Joystick882 Java and Java3D-- VRML-- Total4,919100

40 VR Market growth

41 The key elements of a conventional VR System

42 The key elements of a modern VR System


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