Overview of Fall Semester

1
Overview of Fall Semester

• Glenn Bresnahan
• glenn_at_bu.edu

2
Semester 1 Syllabus

1. Introduction Maria, Glenn, Felix, Greg (2
   classes)
2. Collaborative Art Project - Felix (6 classes)
3. Introduction to Virtual Reality Glenn (1 class)
   
4. Corel Painter I Laura (3 classes)
5. Principles of sound Glenn, Robert (2 classes)
6. Digital Audio Manny (3 classes)
7. Native American imagery Greg (1 class)
8. Using Digital Media in VR Erik, Robert (3
   classes)

3
Semester 1 Syllabus (continued)

1. Field trip to Chaco Canyon and discussion Maria
   (2 classes)
2. Principles of animation Erik (1 class)
3. Corel Painter II Laura (3 classes)
4. Building a virtual world Graph Paper World
   Erik (3 classes)
5. Planning final project Maria, Felix (2 classes)
6. Principles of digital images Glenn (2 classes)
7. Final project work Felix, Erik (6 classes)

4
Lesson Plans
5
Lesson Plan Materials

• http//scv.bu.edu/BPC
• Lesson plans as Web pages
• PDF files for entire semester
• PowerPoint lecture materials for most segments
• Ancillary files (homework assignments,
  documentation, etc).
• Reference material pointers

6
High Level Summary of Semester I

• Create a context and framework for collaborative
  project using Native American aesthetics
• Introduce concepts of 3D graphics and VR
• Creation and manipulation of digital images
  (Corel)
• Principles of audio and digital audio processing
  (Audacity)
• Principles of digital images and vision
• Principles of 2D (cell) animation
• Using 2D images and digital audio in a VR
  environment (DAFFIE)

7
Lesson 1 Intro to Art Computation

• Provide an orientation to the class
• Background, rational and funding
• Use of video conferencing (AG)
• Introductions of students and teachers
• Syllabus
• Expectations grading
• Expose the students to Virtual Reality
• Demonstrate one or more VR worlds
• have students navigate in VR space
• Explain 3D stereoscopic effect

8
Lesson 3 Intro to Virtual Reality

• Introduces the concepts of 3D displays, VR,
  computer graphics, animation, and DAFFIE software
• Stereopsis
• Principles of animation
• Fundamentals of mathematical / geometric modeling
  and digital representation
• Projection and perspective
• Computer rendering
• http//scv.bu.edu/BPC/MaterialsFall06/lectures/BPC
  -Class-VR-Overview.ppt

9
Stereopsis and 3D Displays

• Stereopsis and binocular vision

• Methods of stereoscopic display
• Anaglyphs (e.g. red/blue glasses)
• Binocular devices (e.g. ViewMaster)
• Polarization

10
3D display - polarization

• Polarizing filters used to align light
• Filters rotated 90 degrees block light
• Two projectors, one per eye view
• Polarizing filters rotated 90 degrees
• Matching glasses

11
Animation

• Sequence of still images played over time
  (flicker fusion frequency)
• Basis of film, video, computer animation

12
Rendering Perspective Projection

• Projection of 3D world onto 2D plane
• Artistic, photographic and computer rendering

13
Computer Rendering and Models
14
Numerical/Geometric Models

• begin ./table/items ltdefaultgt
• setxfm
• 1.000000e00 0.000000e00 0.000000e00
  0.000000e00
• 0.000000e00 1.000000e00 0.000000e00
  0.000000e00
• 0.000000e00 0.000000e00 1.000000e00
  0.000000e00
• 0.000000e00 0.000000e00 0.000000e00
  1.000000e00
• putprp cull 1
• begin ./table/items/cube polygon
• setxfm
• 1.500000e00 0.000000e00 0.000000e00
  0.000000e00
• 0.000000e00 1.500000e00 0.000000e00
  0.000000e00
• 0.000000e00 0.000000e00 1.500000e00
  0.000000e00
• 2.000000e00 -1.500000e00 -1.250000e00
  1.000000e00
• defpnt 1 -1.000000e00 -1.000000e00
  -1.000000e00
• defpnt 2 -1.000000e00 1.000000e00
  -1.000000e00
• defpnt 3 1.000000e00 1.000000e00
  -1.000000e00
• defpnt 4 1.000000e00 -1.000000e00
  -1.000000e00
• defpnt 5 -1.000000e00 -1.000000e00
  1.000000e00
• defpnt 6 -1.000000e00 1.000000e00
  1.000000e00

15
Computer animation

• Generate multiple images by changing the viewing
  (i.e. camera) position
• Reposition one or more objects between frames

16
Computer animation

• Render a sequence of models

17
Computer animation
18
DAFFIE Software

• Distributed Applications Framework For Immersive
  Environments
• Glenn Bresnahan
• Erik Brisson
• Robert Putnam

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DAFFIE Worlds

• Shared space divide into rooms
• Doorways (portals) between rooms
• Rooms contains objects
• Objects
• 3D appearance (3D model)
• May be animated (sequences of models)
• May have an appliquéd (2D) image (textures)
• May have associated sounds (digital audio)
• May react to avatars (people) or other objects
  (behaviors via agents)

20
Sounds and Images in DAFFIE

• Images may be appliquéd to the surface of an
  object (flat or curved)
• Sounds may be attached to objects (locations in
  3D)
• Images objects may be sequenced to generate
  animation

21
Project Development Semester 1

• Develop symbols and imagery
• Acquire and manipulate digital images (Corel)
• Map images onto canned virtual world (imagecp)
• Collect and manipulated digital audio (Audacity)
• Add audio to virtual world (imagecp)
• Conceptualize final project
• Layout (plan) virtual world using simple building
  blocks (gpw)
• Integrate layout, images and sound in world

22
Project Development Semester 2

• Develop 2D (cell) animation (Corel)
• Texture map animation into virtual world
• Develop programs to manipulate (move) objects in
  virtual world (Logo)
• Conceptualize and design 3D world
• Develop 3D animated model sequences (Maya)
• Integrate virtual world with objects, sounds, etc.