采用3D D-P算法的等高线三维综合实验研究

基金项目: 南京师范大学虚拟地理环境国家教育部重点实验室开放研究基金资助项目(2007VGE01)；国家自然科学基金资助项目(40971244)

详细信息

Experimental Investigation on the Three Dimension Generalization of Contour Lines using 3D D-P Algorithm

¹School of Resource and Environment Science,Wuhan University,129 Luoyu Road,Wuhan 430079,China

Funds: 南京师范大学虚拟地理环境国家教育部重点实验室开放研究基金资助项目(2007VGE01)；国家自然科学基金资助项目(40971244)

摘要: 将等高线看作是由高程点以特定形式组织得到的空间三维线段,采用3维Douglas-Peucker算法从三维空间提取等高线上的主要特征点。根据等高线数据特点,对该算法进行等高线综合的几种方案进行实验讨论。实验结果和运算速度表明,采用3维Douglas-Peucker算法综合等高线具有广阔的研究前景。
- 制图综合 /
- 等高线综合 /
- 三维Douglas-Peucker算法 /
- DEM/DTM
Abstract: The generalization of contour lines is an active issue in the field of multi-scale representation of terrains.This paper considers the contour lines as the 3D segments constructed from elevation points which are sorted in a special rule,and then selects the significant feature points from those spatial points in 3D space using the 3D D-P algorithm.Based on the spatial distribution characteristic of contour line data ses,several methods are designed and given comments on their results.It is concluded that the generalization of contour lines using 3D D-P algorithm is a promising way to meet the cartographic generalization according to its quality and speed in the generalization.
- cartographic generalization /
- contour line generalization /
- 3 dimension Douglas-Peucker algorithm /
- DEM/DTM