HOU Tao, FAN Xiang-tao, GUO Hua-dong, SHAO Yun
National Key Laboratory of Remote Sensing Science,
Massive data scene real-time simulation is not only one of many researches for digital earth
application techniques, but also the important problem to be resolved for
geographical information system developing towards the 3D analysis phase. With
the quantity of 3D scene data increasing and popularization of graphics
processing unit specially designed for graph rendering, if not obviously
decreasing the graph quantity and complex of 3D scene, the research that some effective data
processing and special graph rendering methods can be applied on general computers to speed up
rendering and solve the conflict among the speed, quality and complex of
massive data scene is becoming an important direction. At the same time, with
the improvement of graphics cards performance and network
bandwidth, people become more interested in the 3D simulation applications on
the internet.
Based on the latest development of virtual reality technology, combined
with the reality of Beijing Olympic Park, the related theory and methods are discussed
and applied in this paper including the automatic simplification for models in
massive data 3D scene and optimally processing assisted by GPU. Then the basic frame of
constructing virtual Olympic Park is provided. The design of system and
developing flow based on components are discussed in detail from several aspects
such as function module, performance and configuration. At last an instant of
web release for 3D simulation scene of Beijing Olympic Park is given and the
wide foreground is shown.
Keyword:
3D Simulation,