Using Augmented Virtuality for Remote Collaboration Presented by - - PowerPoint PPT Presentation

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Using Augmented Virtuality for Remote Collaboration Presented by - - PowerPoint PPT Presentation

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Using Augmented Virtuality for Remote Collaboration Presented by Julian Yu-Chung Chen CS528 Fall 2005 2005-10-27 Computer-Supported Collaborative Work (CSCW) environment Application sharing Data distribution and sharing

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“Using Augmented Virtuality for Remote Collaboration”

Presented by Julian Yu-Chung Chen CS528 Fall 2005 2005-10-27

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  • Computer-Supported Collaborative Work

(CSCW) environment

  • Application sharing
  • Data distribution and sharing
  • Video-conferencing
  • Integrating AV, AR, data distribution/sharing

and network to one CSCW environment

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Previous Works

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So, what’s wrong?!

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  • Cumbersome hardware
  • HMD - Limits face-to-face communication
  • Tracking system
  • Cake platter
  • Inherent need to have the meeting at one

physical location

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cAR/PE!

  • Augmented

Virtuality (AV) - based video- conferencing system

  • Requirements
  • Implementation
  • Empirical Work
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A Real World Meeting Scenario - User case

  • A planned meeting
  • Two or more participants
  • Optimize for 2~3 users (56%, Aaby, 2003)
  • A moderator + 2 other users
  • 3D CAD models
  • Slides or spreadsheets
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Requirements

  • Local, regional and worldwide collaboration
  • 3D

Video-conferencing on the desk

  • Enable natural communication
  • One system for communication, 3D data,

and presentation

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  • Integrated into existing IT infrastructure
  • Cost should be minimal
  • Less than €5000
  • Interface should be natural
  • Network bandwidth consumption
  • Aiming for wireless LAN

Requirements

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User’s workspace

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Meeting Room(Virtual)

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Interactions

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Visible viewpoint control

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Others

  • Use video-planes instead of avatars
  • Ray-cast pointing
  • Mapping audio and video information
  • Horizontal space orientation in virtual

world is easier to implement

  • Later version uses icons buttons in 3D space

to do interactions

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Usability test

  • 27 R&D adult volunteers
  • Task: decide on the most aesthetic out of

five car models in 20 minutes

  • Observation
  • Will ‘communication’ happen?
  • Enable the experience of presence?
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Results

  • 88.9% - Easy to use
  • Audio delay and jitter is crucial
  • Users’ prior

VR or AR experience do not have much impact

  • Eye contacts is important to do face to face

communication - camera position

  • But in general, there was little sense of

presence.

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cAR/PE! vs. “RealWorld”

  • 60 users from DaimlerChrysler production

plants

  • Tasks, 10 minutes each
  • Cost optimization task
  • Design task
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Results

  • Overall rated good
  • 92% would use a system like cAR/PE! for

their actual work

  • Audio quality takes a higher priority of

improvements (30 persons mentioned)

  • Alter table configurations to give user more

freedom of movements

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In Summary

  • Real life 2-3 users meeting scenario is

analyzed and requirements are listed

  • A Augmented

Virtuality prototype for 3D video-conferencing cAR/PE! is developed and tested

  • Even with some compromises due to the

requirements, the system is still rated good and useful overall.

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Questions?

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References

  • “Using augmented

Virtuality for Remote Collaboration”, Presence: Teleoperators and virtual environments, June 2004.

  • “An Immersive 3D

Video-Conferencing System Using Shared Virtual Team User Environments”

  • http://igroup.org/projects/carpe/
  • http://www.shared-reality.de/index.php?

main=products&sub=meeting

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Backup slides

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MagicMeeting

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“MagicMeeting”, 2001

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Virtual meeting room views

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A typical meeting environment