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Adaptive streaming of 3D-GIS geometries and textures for interactive visualisation of 3D city models

: Haist, J.; Korte, P.

Suares, J.; Markus, B. ; Association of Geographic Information Laboratories in Europe -AGILE-:
AGILE 2006, 9th AGILE Conference on Geographical Information Science. Shaping the future of Geographic Information Science in Europe
Szekesfehervar: College of Geoinformatics, University of West Hungary, 2006
ISBN: 963-229-422-X
Conference on Geographical Information Science <9, 2006, Visegrád>
Fraunhofer IGD ()
Level of detail; 3D city model; information visualization; streaming; 3D graphics; remote rendering; geodata

In this paper the authors present an approach to adaptive streaming of complex three-dimensional GIS data over public networks. In the client-server based architecture, the CityServer3D, both geometrical and texture data describing highly detailed threedimensional city models is streamed to the client. In order to achieve significant reduction of the huge amount of data we take advantage of LOD concepts and a predictive approach to anticipate user navigation: After estimation of future viewing parameters, the server chooses bandwidth-adequate representations of threedimensional objects and delivers them to the client. By this means, we ensure that only user-relevant data is sent.