等高线自动内插关键算法

发布时间：2018-03-20 04:28

本文选题：等高线　切入点：内插　出处：《测绘科学》2016年08期 　论文类型：期刊论文

【摘要】：针对现有规则网格法、三角网法、最大角优先原则法、最近距离法等等高线内插算法的局限性,该文结合数字线划图中离散高程点和高程注记的图式表达特点,提出了距离优先算法和综合匹配法;结合等高线节点分布特征,提出了按节点提取算法和按距离提取算法。通过这些算法的组合应用,解决了等高线自动内插的技术难题,并以此算法为基础开发出了一套成熟的软件,通过广州增城地区1 616km~2地形图编绘和日常工作实践,验证了该算法的适应性和先进性。
[Abstract]:Aiming at the limitations of the existing contour interpolation algorithms, such as regular grid method, triangle mesh method, maximum angle first principle method and nearest distance method, this paper combines the characteristics of discrete elevation points and elevation notation in digital line drawing. Distance first algorithm and synthetic matching method are put forward, combined with the distribution characteristics of contour line node, the algorithm of extracting by node and the algorithm of extracting distance by distance are put forward. Through the combination of these algorithms, the technical problem of automatic contour interpolation is solved. On the basis of this algorithm, a set of mature software is developed. The adaptability and advanced nature of the algorithm are verified by the mapping of 1616km2 topographic map and daily working practice in Zengcheng area, Guangzhou.
【作者单位】：广州市城市规划勘测设计研究院;
【分类号】：P208

【相似文献】