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视景体可视范围的确定及应用 被引量:5

Determination and application of visual scope of viewing volume
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摘要 本文以Lidar点云数据为地形数据源文件,先讨论了基于OpenGL的点云三维可视化表达;然后研究了视景体可视范围的计算方法,以此作为剪裁Lidar点云数据的依据;最后在前两方面研究的基础上探讨了四叉树对点云数据的组织,生成了三维地形场景,并实现了场景的实时漫游。 This paper based on Lidar point cloud data.Firstly,discussed 3D visualization of expression of the point cloud based on OpenGL.Secondly,studied the method of calculating the visual scope of the view-frustum,and crop the Lidar point cloud data on it.Thirdly,It organized the point cloud data using quad-tree.Finally,3D terrain scene was created,and it can roam real-time.
出处 《测绘科学》 CSCD 北大核心 2009年第S1期179-181,71,共4页 Science of Surveying and Mapping
关键词 雷达 OPENGL 视景体 可视范围 四叉树 Lidar OpenGL view-frustum visual scope quad-tree
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