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A rapid visualization method of vector data over 3D terrain

机译:3D地形上矢量数据的快速可视化方法

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A rapid visualization method of GIS vector data on 3D terrain is proposed in this paper, including the organization of 3D vector data based on a quad-tree structure, the way to spatialize 2D vector data with terrain matching and methods to render a large amount of vector objects in a 3D scene. In the preprocessing procedure, vector data is extracted into different levels of detail using a simplification algorithm and then divided into quad-tree tiles. In the tile, a rapid terrain matching method is introduced to make 3D vectors go with terrain mesh faces. At run-time, vector objects are cached and managed by an object pool to realize rapid visualization. Experimental results prove the proposed method is a practical and efficient way to visualize large-scale vector data over 3D terrain.
机译:本文提出了一种快速可视化3D地形上的GIS矢量数据的方法,包括基于四叉树结构的3D矢量数据的组织,利用地形匹配对2D矢量数据进行空间化的方法以及渲染大量GIS数据的方法。 3D场景中的矢量对象。在预处理过程中,使用简化算法将矢量数据提取到不同的细节级别,然后将其划分为四叉树图块。在图块中,引入了快速地形匹配方法,以使3D矢量与地形网格物体面匹配。在运行时,矢量对象由对象池缓存和管理,以实现快速可视化。实验结果证明,该方法是可视化3D地形上大规模矢量数据的一种实用有效的方法。

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