本文还研究了通过扫描数字化等高线图建立数字地形模型的方法。
The methods to obtain the Digital Terrain Model (DTM) from contour map by scan digitizing were studied.
利用数字影像自动提取数字地形模型(dtm)的关键是影像匹配。
Image matching is the key stage for digital Terrain Model (DTM) automatical aquisition using with digital images.
在GIS支持下，利用土壤背景和数字地形模型可实现水土流失潜在可能性分析。
The soil erosion potential possibility can be studied using the soil background map and digital terrain map supported by GIS;
为实现立体像对的自动相对定向和数字地形模型自动生成提供了一种切实可行的方法。
This method has shown a good furture for automatic relative orientation and generation of Digital Terrain Models.
数字地形模型是空间地形数据集合的统称，是具有空间位置特征和地形属性特征的数字描述。
Digital Terrain Model is a general designation of space topographical data set, and it is the digital description with the figure of space position and topographical attributive character.
数字地形模型是针对地形地貌的一种数字建模，这种建模的结果通常就是一个数字高程模型（DEM）。
Digital Elevation Model(DEM) is a digital modeling process which aims at terrain and physiognomy. Irregular triangulation TIN is the best model when DEM data are stored and expressed.
数字地形模型(DEM)包含着丰富的地形、地貌及相关的地学信息与知识，是GIS数字地形分析的数据基础。
As the data base of the GIS digital terrain analysis, digital Elevation Model (DEM) contains rich of terrain, topography and related geo-information and knowledge.
对构筑三角形网格建立数字地形模型进行了研究，给出了基于散乱点和边建立三角形网格地形模型的生成算法和数据结构。
Generation of triangular meshes for digital terrain model is studied, the triangulation algorithm of discrete points and edges and its data structure are presented.
对构筑三角形网格建立数字地形模型进行了研究，给出了基于散乱点和边建立三角形网格地形模型的生成算法和数据结构。
Generation of triangular meshes for digital terrain model is studied, the triangulation algorithm of discrete points and edges and its data structure are presented.
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