摘要
基于重构等高线，本文提出了一种新的DEM精度指标-原始等高线与重构等高线间的面积差与原始等高线长度之比，研究基于重构等高线的DEM精度评估，评价DEM与实际地形吻合的情况。
In this paper, we put forward a new kind of index which is the ratio of areas between the original contour and the reconstructed one to the length of original contour to estimate the accuracy of DEM. Then we research the accuracy estimation of DEM based on reconstructed contour, and evaluate the degree of the DEM consistence with the terrain relief.
出处
《测绘科学与工程》
2009年第1期50-53,共4页
Geomatics Science and Engineering
关键词
DEM精度
规则格网
不规则三角网
重构等高线
DEM accuracy
regular grid
triangulated irregular network
reconstructed contour
