| 一种改进的Delaunay-三角网内插方法 |
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| 引用本文： | 汪燕麟,黄现民.一种改进的Delaunay-三角网内插方法[J].测绘与空间地理信息,2017,40(5). |
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| 作者姓名： | 汪燕麟 黄现民 |
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| 作者单位： | 云南省测绘工程院,云南 昆明,650033 |
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| 摘 要： | GIS领域经过多年的研究和发展,一些与DEM相关的基本算法如Delaunay-三角网创建算法、矩形格网跟踪等高线算法等已逐渐趋向成熟。然而伴随技术的发展,用户对相关算法和软件的要求也不断提高,从而产生了一些问题。本文主要针对DEM处理过程中常见的问题,结合项目实践,研究分析目前常规处理算法的特点和缺点,提出新的改进方法。通过若干重大项目实际生产实践验证,优化后的算法在结果的正确性、稳定性上均有较大提升,同时,提高了作业效率,与传统方法相比具有较大优势。
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| 关 键 词： | DEM精细化 Delaunay 双线河 连接条件 矩形格网 等高线 三角网 内插 |
One Refine Method of Delaunay-Triangle Interpolation |
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| WANG Yan-lin,HUANG Xian-min.One Refine Method of Delaunay-Triangle Interpolation[J].Geomatics & Spatial Information Technology,2017,40(5). |
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| Authors: | WANG Yan-lin HUANG Xian-min |
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| Abstract: | After years of research and development,some basic DEM algorithms have been gradually matured in GIS field,such as Delaunay triangulation algorithm,contour tracing algorithm of rectangular grid.However,with the development of the technology,the requirements of the related algorithms and software are also improved.This paper mainly focuses on the common problems in the process of DEM refinement.Based on the practice of projects,the advantages and disadvantages of the current processing algorithm are studied,and the new and improved method is proposed.The method is verified in several major projects that the optimized algorithm has greatly improved not only the accuracy and stability of the results but also the operating efficiency compared with the traditional method. |
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| Keywords: | DEM refinement Delaunay double line river connection condition rectangular grid contour triangle network interpolation |
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