摘要
为了解决系列比例尺地形图缩编过程中高程点的抽稀问题,考虑到高程点分布的密度和地形起伏等因素,基于高程点构建了TIN,再结合平均高程面、高程梯度和局部高程最值点,对高程点进行了筛选抽稀。
In order to solve the elevational points sparsing problem in the series scale topographic map downsizing process, considering the distribution density of elevational points, topography and other factors, this paper took a method for screening and sparsing elevational points based on the points constructing TIN, combined with mean elevation plane, elevational gradient and local extreme elevational points.
出处
《测绘通报》
CSCD
北大核心
2017年第5期110-112,共3页
Bulletin of Surveying and Mapping
基金
精密工程与工业测量国家测绘地理信息局重点实验室开放基金(PF2015-6)
关键词
TIN
高程梯度
高程点
抽稀
TIN
elevational gradients
elevational points
sparsing
