"Using Augmented Virtuality for Remote Collaboration"

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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 Video-conferencing Integrating AV, AR,  data distribution/sharing and network to one CSCW environment
Previous Works
So,  what's wrong?!
Cumbersome hardware HMD - Limits face-to-face communication Tracking system Cake platter Inherent need to have the meeting at one physical location
cAR/PE! Augmented Virtuality (AV) - based videoconferencing             system Requirements Implementation Empirical Work
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
Requirements Local,  regional and worldwide collaboration 3D Video-conferencing on the desk Enable natural communication One system for communication,  3D data, and presentation
Integrated into existing IT infrastructure Cost should be minimal Less than €5000 Interface should be natural Network bandwidth consumption Aiming for wireless LAN Requirements
User's workspace
Meeting Room(Virtual)
Interactions
Visible viewpoint control
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
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?
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.
cAR/PE! vs. "RealWorld" 60 users from DaimlerChrysler production plants Tasks,  10 minutes each Cost optimization task Design task
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
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.
Questions?
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
Backup slides
MagicMeeting
"MagicMeeting",  2001
Virtual meeting room views
A typical meeting environment



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