AccessGrid Archeological Dig Visualisation

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AccessGrid Archeological Dig Visualisation

• Yifan Lu
• u4146926
• Supervised by Rhys Hawkins,
• Dr. Henry Gardner

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Structure of presentation

• Overview of entire project
• Essential components of project
• Blueprint of project
• Issues and problems
• Time schedule
• References

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1.Overview

• More than just new version of Virtual Excavation
• The project continues the Virtual Excavation
  which had involved several escience students
• The project will still follow the terms of
  archaeological dig, but it will bring several
  approaches to stimulate and present the
  archaeological dig, for instance Augmented
  Reality.

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1. Overview

• Collaborative, augmented, data-presentable
  archaeological Visualization
• Constructing shared and collaborative virtual
  environment through AGJuggler that takes
  advantages of VRJuggler and integrates it with
  the Access Grid which is considered as a fairly
  mature collaborative design platform.
• Employing the chroma key technique to wave real
  users and archaeological site together and create
  an highly immersive simulation.

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1.Overview

• Creating a new approach allows the users to
  present the well-detailed 3D artefacts model
  using Augmented Reality.(3D artefacts are modeled
  according to the photos from archaeological spot,
  that should offer the reasonable details. )
• Establishing the highly immersive virtual
  excavation enabling the walk through presentation
  displayed on the wedge.

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2.Essential components of project

• Access Grid
• Is a large scale group to group collaborative
  communication environment
• Is "designed space" that explicitly contains the
  high-end audio and visual technology needed to
  provide a high-quality compelling user experience
  
• Is ideal interactive and networked application
  base supporting distant visualization with
  multicasting

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2.Essential components of project

• Augmented Reality
• Chroma key extracts user from video stream and
  allows substitution of a virtual background
  through alpha channel.

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2.Essential components of project

• Augmented Reality
• ARToolkit provides a tangible augmented Reality
  interface using accurate vision-based tracking
  approach and defines a new style for user to
  manipulate and present virtual data.

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2.Essential components of project

• AGJuggler VRJuggler
• VRJuggler is an ideal virtual reality application
  developing environment with cross-platform,
  run-time flexibility, locally distributed
  applications environment and performance
  monitoring features.
• AGJuggler takes the advantages of functionalities
  of VRJuggler and integrates with shared
  collaborative environment provided by Access
  Grid. Finally, it contributes to the richer
  collaborative experience to geographically
  distributed users.

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2.Essential components of project

• Immersive interaction through Wedge
• The display is ported into the esciences tracked
  interactive wedge
• As powerful utilities offered by wedge( e.g.
  Ultrasound head tracker,3D mouse), hopefully we
  can bring presenter into the virtual dig
  enabling walk through type presentations.

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2.Essential components of project

• Reconstructing the archaeological data
• Image based 3D modeler
• PhotoModeler and ImageModeler
• interactive reassemble artefacts from pieces of
  shreds
• general site location.

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3. Blueprint of project
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4.Issues and problems

• Broad topic and limited time
• Access Grid node capability
• Interface between AGJuggler and Wedge
• Archaeological reconstruction from shreds
• Video resolution vs archaeological details
• Distributed virtual reality applications
  synchronization
• Adaptation between 2D human figure captured by
  chroma-key and 3D archaeological virtual site

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5.Time schedule
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6. References

• 1 L. Childers, T. Disz, R. Olson, M. E. Papka,
  R. Stevens,and T. Udeshi, Access Grid Immersive
  Group-to-Group Collaborative Visualization,4th
  International Immersive Projection Technology
  Workshop, 2000.
• 2. Carolina Cruz-Neira, Allen Bierbaum, Patrick
  Hartling, Christopher Just, and Kevin Meinert. VR
  Juggler An Open Source Platform for Virtual
  Reality Applications. In 40th AIAA Aerospace
  Sciences Meeting and Exhibit 2002, Reno, Nevada,
  January 2002.
• 3 AGJuggler An architecture for virtual
  reality within a collaboration environment.
  Master's thesis, Purdue University, 2005
• 4 Michael Ashikhmin, High Quality Chroma Key
  http//www.cs.utah.edu/michael/chroma/
• 5 AccessGrid website http//www.accessgrid.org/
• 6 ARToolkit. http//www.hitl.washington.edu/rese
  arch/ shared_space/
• 7 Benko, H., Ishak, E., Feiner, S.
  "Collaborative Visualization of an Archaeological
  Excavation". Workshop on Collaborative Virtual
  Reality and Visualization (CVRV 2003). Lake
  Tahoe, CA. October 2628, 2003