期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2008
卷号：XXXVII Part B2
页码：991-994
出版社：Copernicus Publications
摘要：3-Dimensional terrain visualization has been widely used in the fields, such as games, geographic information system (GIS), remotesensing (RS) and virtual reality (VR). Rendering large scale 3D terrain interactively is now becoming a hot research topic for the fastgrowing application of 3D terrain visualization. There is a conflict between massive 3D terrain data and its fast rendering. On onehand the visualization of terrain scene is expected to be in the interactive frame rates without any delay, on the other hand the terrainscene is expected to be large enough to meet the need of understanding the environment without compromising visual quality. Fromthe above mentioned, massive 3D terrain data and texture memory management become the performance bottleneck in thevisualization of large scale terrain. The terrain rendering load must be controlled by reducing the number of rendered primitives usingLoD(level-of-detail) techniques, adaptive extraction of LoD meshes, pyramid management of DEM(digital elevation model) andDOM(digital orthograph model) and real-time loading and rendering of massive 3-D terrain data. In this paper we will investigate anddiscuss the approaches, the pyramid management and rendering of massive 3-D terrain data in interactive frame rates
关键词：Visualization; Level of Detail; Computer Vision; Simulation; Geography
