Basic HTML version of Foils prepared November 29 98

Foil 5 Collaborative 3D GIS

From 3D Geographical Information Systems in Tango CEWES Tango Training -- November 17-18 98. by Remek Trzaska, Pawel Roman, Chris Walczak, Marek Podgorny


1 Terrain and other GIS data stored on HTTP server and fetched over the network via HTTP protocol
2 Handles multiple types of GIS data
  • satellite imagery, topographic maps, various geological characteristics (i.e., vegetation, geological resources, and water concentration) and arbitrary 3D objects are visualized (complete database for NYS).
3 Wavelet compression for both DEM and satellite images, reduces size of data by a factor of 32 for DEMs and 30-60 for textures.
4 Adaptive mesh simplification technique results in rendering time reduction by a factor of 40.
5 Internal caching system with pre-processing
6 Level-of-detail rendering

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