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- The achievements of this thesis can besummarized as fOllows:Present a simple description of DTM(Digital Terrain Model) and the technology ofterrain modeling with reguIar and irregular terrain data. 1）在对数字地面模型建模方法进行简要小结的基础上，对基于规则格网和不规则三角网的地形建模技术进行了研究。
- In this dissertation, focused on the aerial image matching based terrain data acquisition and DEMs based digital terrain analysis, some theory, approach and key technical problem of digital terrain modeling are discussed. 本论文围绕着数字地形模拟的相关理论方法和关键技术问题进行了讨论，其中重点研究了基于航空遥感影像的地形数据获取和基于DEM的数字地形分析问题。
- Study on Application of Digital Terrain Data in Radar Image Simulation 数字地形在雷达图像仿真中的应用研究
- A New Method for Extracting Terrain Feature Lines from Digitized Terrain Data 提取山脊线和山谷线的一种新方法
- This paper discussed digital terrain model (DTM) . 论述了地面数字模型DTM(Digital terrain model).
- Digital Terrain Data 数字地形数据
- A new method of automatism extracting terrain feature lines from digitized terrain data 山脊线和山谷线自动提取的一种新方法
- Digital Terrain Modeling (DTM) is an important utility of GIS. 数字地形模型是GIS的一个重要应用。
- 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。
- Firstlythe digital terrain model is constructed using Delaunay triangulation technique, and then the road design data is merged into the DTM. 首先利用Delauany三角化方法构造数字地面模型,然后将公路设计数据与数字地面模型进行叠加。
- Analyzing the storage format of DMA DTED and USGS DEM and then presenting a new digital terrain elevation data storage format. 分析了DMA的DTED和USGS的DEM高程数据存储格式，比较了其异同，提出了一种高效的数字地图高程数据的存储格式并实现了存取算法。
- Walkthrough in massive terrain data is a key technology and difficult problem of GIS, VR, game and simulation, etc. 摘要大范围、海量地形数据的快速漫游是GIS、虚拟现实、游戏、仿真等领域的关键技术与难点之一。
- The base data of the quantitative analysis about land feature and the automatic drawing of topographic map is furnished by Digital Terrain Model(DTM),it is the basics of Geography information System(GIS). 数字地面模型为多种地形特征的定量分析与地形图的自动化绘制提供了基本数据，它是建立土建CAD和地理信息系统的基础。
- The storage and management of massive terrain data is the key of large-scale terrain roaming. 海量地形数据的存储与管理是大规模地形实时漫游系统的关键。
- A method of estabisihing digital terrain models(DTM) with TIN is introduced, and problems during modeling are discussed in the paper. Furthermore,application problems about the hybrid model,as well as the data structure of TIN,are analyzed. 介绍了用不规则三角网(TIN)建立数字地面模型(DTM)的基本思路;讨论了在建模过程中所遇到问题的解决方法;分析了混合模型的应用问题及TIN数据结构.
- In accordance with peculiarity of existing prediction model, the renewal on digital terrain map with large scale is actualized in the current digital mapping system with simplified data processing. 文中针对现有开采沉陷预计模型的特点，以通用数字化成图系统为操作平台，经过简单的数据处理后，实现了矿区大比例尺数字地形图的预测更新。
- The primary bug of this algorithm is that it discards the relative position information of terrain data and the normalized processing. 因为地形熵算法丢掉了地形的相对位置信息及对地形数据做了归一化处理,使得其在地形跟随/地形回避中的应用存在着匹配误差容易发散的问题。
- 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。
- Experimental results on real terrain data show that the algorithm based on one DAG improves the computing performance of an extraction of terrain. 实验表明，基于DAG表示的地形抽取算法利用变化数据间的空间关系提高了计算性能。
- The constrained digital terrain model is displayed in AutoCAD which is developed by VC++6.0 and ARX. 通过使用VC++6.;0和ARX开发工具;在AutoCAD环境下实现了约束DTM的建立和显示。
