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

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.