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Virtual Reality as an Interface for 3D-GIS

Virtual Reality as an Interface for 3D-GIS. Rick Germs, Gert van Maren, Edward Verbree & Erik Jansen Department of Information Technology & Systems Department of Civil Engineering & Geosciences Delft University of Technology ASCI’99 Conference, June 15-17, Heijen, The Netherlands.

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Virtual Reality as an Interface for 3D-GIS

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  1. Virtual Reality as an Interface for 3D-GIS Rick Germs, Gert van Maren, Edward Verbree & Erik Jansen Department of Information Technology & Systems Department of Civil Engineering & Geosciences Delft University of Technology ASCI’99 Conference, June 15-17, Heijen, The Netherlands

  2. 3D-GIS & Virtual Reality Project • LWI-funded project • developers: • Delft University of Technology • CrossWorlds, TNO-FEL, SARA • end-users: • Holland Railconsult • Rijkswaterstaat

  3. 3D-GIS & Virtual Reality Project • Goal: • “To enable (infrastructure) designers to interactively visualise, manipulate and analyse (changes in) the landscape and the urban environment with 3D GIS & VR.”

  4. Overview • Geographic Information Systems • Virtual Reality • Planning process • Views • Implementation • Future Research

  5. Geographic Information Systems • Spatial data: • geometric (points, lines, polygons) • more and more 3D GIS and CAD information • thematic (name/address, type, statistics) • more and more data from analysis and simulation • Spatial analysis: • Network analysis (finding routes) • Spatial queries (finding nearest objects)

  6. Virtual Reality Desktop VR ResponsiveWorkbench CAVE

  7. Planning Process • Infrastructure Design:

  8. Plan View • 2D symbolic visualisation • Simple GIS functions • VR `map’ tool: • Orientation • Navigation

  9. Model View • 3D symbolic visualisation • Modelling • arrangement of objects • geographic constraints • Virtual Workbench

  10. World View • 3D “realistic” visualisation • Presentation • non-experts • immersive VR: • CAVE • ImmersaDesk

  11. Implementation “Karma” • Components: • VR: WorldToolKit • GIS: Spatial Database Engine • Platforms: • PC • SGI, CAVE, Responsive Workbench

  12. Current Status • 2-way coupling VR and 3D GIS realized. • Manipulation of GIS objects • rotate, translate, delete • GIS analysis • query, spatial query, identify • End-users will test the system in real-life applications

  13. Future Research • Performance • dynamic loading • level of detail (GIS and 3D models) • Modelling • geographic constraints • data enrichment • Linking existing datasources • visualising analysis calculations

  14. Delft in the year 1660...

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