| dc.description.abstract | Urban and suburban scenery visualization system offers the users more realistic presentation and understanding to our environment. Moreover, the users can feel free to walk and fly through the synthetic world to get more information. In this study, we propose a visualization system based on multiresolution terrain modeling, view-dependent browsing, multiresolution building modeling, and other operation functions.
To construct a 3D virtual environment, we need many models such as, terrain, buildings, vehicles, and others. If there are huge amount of models in the virtual environment, the rendering efficiency of the visualization system will degrade; thus we need advanced techniques to improve the visualization performance without reducing the visual quality. The multiresolution modeling technique is one way to improve the visualization performance without degrading the visual quality.
In the proposed system, huge terrain models as well as the complex building models are need to be simplified and built as multiresolution styles. The natural terrain models and the artificial building models need different techniques to construct the multiresolution models. In this study, the terrain multiresolution models are generated by the method of progressive mesh; the building multiresolution models are constructed by a sequence of separation and simplification processes. Moreover, we provide a path editor for the proposed system such that we can demonstrate or rehearse a fly through simulation. | en_US |