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Web-based visualization of large 3D urban building models
- Zhang, Liqiang, Han, Chunming, Zhang, Liang, Zhang, Xiaokun, Li, Jonathan
- International journal of digital earth 2014 v.7 no.1 pp. 53-67
- Internet, geographic information systems, models
- Adaptive rendering of large urban building models has become an important research issue in three-dimensional (3D) geographic information system (GIS) applications. This study explores a way for rendering web-based 3D urban building models. A client–server hybrid rendering approach is presented for large 3D city models, stored on a remote server through a network. The approach combines an efficient multi-hierarchical building representation with a novel image-based method, 3D image impostor generated on demand by a remote server. This approach allows transferring complex scenes progressively while keeping high visualization quality. We also evaluated the rendering and data transferring performance of the proposed approach.