Digital Terrain Model is the basic and core module of the railway route CAD system.
数字地面模型是铁路线路CAD的基础核心模块。
Digital terrain model (DTM) is an important component of a resource information system.
模型(dtm)是资源信息系统中的重要组成部分。
The methods to obtain the Digital Terrain Model (DTM) from contour map by scan digitizing were studied.
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。
This is an attempt to give a method of railway profile automation design by means of digital terrain model.
本文给出了一种用数字地面模型进行铁路纵断面自动设计的方法。
Image matching is the key stage for digital Terrain Model (DTM) automatical aquisition using with digital images.
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。
A method is presented to implement real-time 3d road animation coupled with road design data and digital terrain model (DTM).
研究了一种用数字地面模型和公路设计数据实现实时三维动画的方法。
In this paper the methods and experiments for applying the digital terrain model(DTM) to improve the classification accuracy are introduced.
本文着重介绍在遥感影象分类中应用数字地面模型（DTM）改正地物反射光谱中地形影响的方法和试验。
To counter the splice problem of digital terrain model (DTM) the paper puts forward the algorithm of cutting out of splice line to triangle network.
该文针对数字地面模型(dtm)的拼接问题提出了基于拼接线对三角网进行裁减的算法，并对其基本原理及主要过程进行了详细介绍。
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。
High resolution digital terrain model derived up from LiDAR point clouds can provide more details of microrelief information for tidal wetland environment researches.
应用激光雷达数据生产高精度的数字地面模型，可为滨岸环境的研究提供精细的微地貌数据。
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。
This paper describes the basic concepts of digital terrain model (DTM), how to use DTM in practice in the mining geological exploration, and how to use CASS surveying and mapping system to build DTM.
简要阐述了数字地面模型(dtm)的基本概念，并结合矿山地质勘查，提出实际情况应用，利用CASS成图系统建立模型。
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.
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。
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 common model of three dimension terrain, and digital analysis is mainly based on DEM.
在三维地形有关的数字分析中，地表面积是经常用到的数据。
The scholars in the GIS domain always add adding texture on geometry model of the 3D things in the study on the 3D terrain and the digital city.
GIS学者在研究三维地形可视化和数字城市可视化时，普遍在地形、城市建筑物的几何模型上叠加了纹理。
Terrain fidelity of digital elevation model (DEM) can be enhanced by integrating terrain character points and terrain lines in the three dimensional model.
采用了地性特征点和地性线参与三维建模的方法，提高了数字高程模型DEM的地形逼真度。
Digital Elevation ModeI (DEM) is a common model of three dimension terrain, and digital analysis is mainly based on DEM.
数字高程模型(DEM)是一种常用的三维地形建模数据模型，三维地形的数字分析主要是针对dem模型的。
Digital Elevation ModeI (DEM) is a common model of three dimension terrain, and digital analysis is mainly based on DEM.
数字高程模型(DEM)是一种常用的三维地形建模数据模型，三维地形的数字分析主要是针对dem模型的。
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