Public Demo Guidelines

1
Public Demo Guidelines

• Room 317 will be open from noon for set up!
  Organize a member of your group to be there.
• 5 projectors will be available for use. Location
  in room 317 and use will be first come first
  serve.
• Have copies of a one page description of project
  with maybe a link for visitors.
• Public demo should be ready to start at 230pm
  5pm. You are all required to be there (at least
  until 4pm, and then arrange a group member to be
  present for extra hour).
• Refreshments (Pizza, sodas, and snacks) will be
  provided.
• Feel free to invite friends, significant others,
  etc It is meant to be a fun event!

2
Final Project submission guidelines

• During demo, you will fill up peer-evaluation
  questionnaire to assess the group members
  performance.
• Create a CD with your complete project software,
  as well as all SDK library used (example SVE,
  ARTK version )
• Provide a README file with detailed instructions
  and illustrations on building your project and
  usage. Provide links for direct X or other
  libraries towards building your project.

3
Wayfinding

• Cognitive process of defining a path through an
  environment using and acquiring spatial knowledge
• 6DOF makes wayfinding hard
• Human beings have different abilities to orient
  themselves in an environment
• Observing wayfinding as a decision making process

4
Wayfinding tasks

• General, explorative search Search without
  target
• Naïve search target position unknown
• Primed search target seen before (known)
• Specified trajectory movement Predefined path

5
Cognitive Map

• During wayfinding, a person makes use of three
  kinds of knowledge to built up a cognitive map of
  the environment
• Landmark knowledge
• Procedural knowledge
• Survey knowledge

6
Reference frames

• Egocentric reference frame position,
  orientation, movement of object with respect to
  position and orientation of the
• eyes
• head
• body
• Exocentric reference frame position, orientation
  and movement are defined in coordinates external
  to body
• object shape
• object orientation
• object motion

7
Travel technique effects

• Steering technique with good strategy helps
  spatial orientation
• A good travel technique will integrate aids to
  wayfinding
• Jumping between points disturbs spatial
  orientation

8
Support of spatial knowledge acquisition

• Allow a wide field of view
• Provide motion cues for judging depth and
  direction of movement
• Audio could enhance visual spatial perception
• Support sense of presence it could strengthen
  the construction of a cognitive map

9
Support of spatial knowledge acquisition

• Design legible environments - allow the user to
  easily see the spatial organisation of an
  environment, enabling the establishment of a
  cognitive map.
• Divide a large-scale environment into parts with
  a distinct character

10
Support of spatial knowledge acquisition

• Create a simple spatial organisation in which the
  relations between the parts are clear
• Support the matching process between the
  egocentric and exocentric frames of reference by
  (visual) cues, including directional cues

11
Support of Spatial Knowledge Acquisition

• Use real-world wayfinding principles to build up
  your environment
• Natural environment principles horizon,
  atmospheric fog
• Urban design principles Lynch districts,
  edges, paths, nodes, landmarks
• Architectural design principles lighting,
  color, texutre, open vs. closed
• Artificial cues signs, text, maps embedded,
  gird, compass

12
Map usage guidelines

• Provide you are here marker
• Provide grid
• Choose either north-up or forward-up map,
  depending on task
• Example World-in-Miniature

13
Manipulation Techniques

• Wand-based
• Go-Go
• Ray Casting
• HOMER (Hand-centered Object Manipulation
  Extending Ray-casting)

14
Two Handed and Body-Centered Interaction

• What can you do with two hands?
• What if you use your body as a reference point?
• Mine, Mark, Frederick P. Brooks Jr., and Carlo
  Sequin (1997). Moving Objects in Space
  Exploiting Proprioception in Virtual-Environment
  Interaction. Proceedings of SIGGRAPH 97, Los
  Angeles, CA. (133K pdf version)

15
Two Handed and Body-Centered Interaction

• What can you do with two hands?
• What if you use your body as a reference point?
• Mine, Mark, Frederick P. Brooks Jr., and Carlo
  Sequin (1997). Moving Objects in Space
  Exploiting Proprioception in Virtual-Environment
  Interaction. Proceedings of SIGGRAPH 97, Los
  Angeles, CA. (133K pdf version)

16
Other Manipulation Approaches

• Tablet/hand-held
• Pinch Glove

17
In the works Advanced Virtual Environments and
Game Development

• Tentative Topics
• Virtual Crowd modeling global and local path
  planning (project 1)
• Virtual Environment Path Visualizations
• Embodied Agent Cognitive and Discourse Modeling
  (project 2a)
• Intelligent Tutoring Systems (project 2b)
• Quaternions
• Automatic Story generation and Camera modeling
• Motion graphs, hierarchical animation
  controllers, and keyframing behaviors (project 3
  with Cal3D/Haptek VH)