| 基于VTK表现的3维空间数据加密算法的研究 |
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| 引用本文： | 王军见,徐苏维,张弘. 基于VTK表现的3维空间数据加密算法的研究[J]. 测绘与空间地理信息, 2004, 27(5): 24-28 |
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| 作者姓名： | 王军见 徐苏维 张弘 |
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| 作者单位： | 河南省地质测绘院,河南,郑州,450006;南京师范大学GIS实验室,江苏,南京,210097 |
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| 摘 要： | 空间数据表示方法和空间数据插值方法是3D-GIS研究的基本问题。3维空间数据的曲面重建有着广泛的应用前景，也是当前国际上的研究热点之一。Crust算法是一种基于计算几何中的Voronoi周期图的曲面重建算法，它算法简单，重建结果精细，但是由于计算量太大，其应用受到了限制，文中采用基于VTK(Visualization Tool Kit)表现3D空间数据的表示方法，提出了一个新的三角网格内插的曲面重建算法，并给出了实例以说明该方法的有效性。
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| 关 键 词： | 3D-GIS 空间数据插值 三角网格VTK |
| 文章编号： | 1672-5867(2004)05-0024-05 |
| 修稿时间： | 2004-07-04 |
Study on 3D Spatial Data Extension Algorithm Represented by VTK |
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| WANG Jun-jian. Study on 3D Spatial Data Extension Algorithm Represented by VTK[J]. Geomatics & Spatial Information Technology, 2004, 27(5): 24-28 |
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| Authors: | WANG Jun-jian |
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| Affiliation: | WANG Jun-jian~ |
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| Abstract: | Methods for representing spatial data and interpolation of spatial data are the basic topic of 3D-GIS. Surface reconstruction of 3D spatial data has wide applications in the future,and is also one hot topic of the study internationally. Crust algorithm for surface reconstruction is based on Voronoi cyclic diagrams in computing geometry. Though this method is simple in use,fine in results,the computing work amounts to a lot of hard ones. So that its uses are limited. Based on VTK,a 3D spatial data representation method,the paper offers a new triangulation interpolation surface reconstruction method. This method has great value for the applications in visualization and object reconstruction. |
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| Keywords: | 3D-GIS spatial data interpolation data extension |
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