| 利用TIN和高程梯度进行高程点抽稀 |
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| 引用本文： | 曹文涛,何伟.利用TIN和高程梯度进行高程点抽稀[J].测绘通报,2017,0(5):110-112. |
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| 作者姓名： | 曹文涛 何伟 |
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| 作者单位： | 武汉市测绘研究院, 湖北 武汉 430022 |
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| 基金项目： | 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 |
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| 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。
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| 关 键 词： | TIN 高程梯度 高程点 抽稀 |
| 收稿时间： | 2016-09-20 |
Sparsing Elevational Points Using TIN and Elevational Gradients |
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| CAO Wentao,HE Wei.Sparsing Elevational Points Using TIN and Elevational Gradients[J].Bulletin of Surveying and Mapping,2017,0(5):110-112. |
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| Authors: | CAO Wentao HE Wei |
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| Institution: | Wuhan Geomatic Institute, Wuhan 430022, China |
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| Abstract: | 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. |
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| Keywords: | TIN elevational gradients elevational points sparsing |
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