主要探讨了三维地形景观的建立。
介绍了一种三维地形生成和可视化的方法。
A method of 3d terrain generation and visualization is discussed.
三维地形可视化是三维gis中的一个重要功能。
The visualization of 3d terrain is an important function in 3d GIS.
最后对这种三维地形生成技术以软件的形式加以实现。
Then this paper implements an application soft based on this building technology of 3D terrain.
文中介绍了基于分形技术的三维地形生成技术及其虚拟浏览。
This paper introduces the three dimensional terrain generation technique which is based on fractal technique, and its virtual browse.
矢量数据的加入为在三维地形上进行空间分析提供了可能性。
The overlaying of the vector data above 3D terrain offers the data basis for the spatial data analysis.
三维地形模拟技术是当前计算机绘图领域中研究的重点之一。
The 3d terrain simulation technique is one of important research issues in the computer graphics.
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。
Digital Elevation model (DEM) is a common model of three dimension terrain, and digital analysis is mainly based on DEM.
通过矢量化提取等高线和高程点作为基础数据，构建三维地形。
Contour lines and elevation points are obtained by vectorization as basic data, which can be used to build three-dimension terrain.
该文提出基于网络实时交互的海量三维地形数据的流式处理方案。
Enlightened by stream medium technology, this paper proposes a method handling 3d terrain data in streaming way for real-time interaction based on network.
实验结果表明该方法较好地实现了地形分块后的三维地形实时漫游。
The experiment results show that this way can achieve good performance on real-time cruising in the terrain which divided as blocks.
超大场景的三维地形可视化模型是虚拟现实系统平台的重要组成部分。
Three-dimensional visualization models for extra large scale landscape geomorphology are the important parts of VR system platforms.
本文论述了基于嵌入式g IS的三维地形显示的一系列理论和算法。
This paper introduces a series of theories and algorithms for 3d terrain display based on the embedded GIS.
获取数字三维地形成果主要涉及数据源、采集模式和生产流程个方面。
To gain the 3d digital topographic results mainly involves three aspects such as the data source, the processing mode and the production procedure.
结合三维地形可视化方法，设计并实现了红外卫星云图的三维可视化。
Integrated with the method of terrain 's 3d visualization, DE - sign and realize the 3d visualization of infrared nephogram of satellite.
提出了一种用边界元法计算频率域人工源三维地形电磁场的数值模拟方法。
We propose a numerical method using boundary element to model the electromagnetic filed induced by artificial source in the frequency domain with 3-D topography.
重点研究三维地形可视化、交互式生成过程中，对地形编辑点的拾取问题。
This article put study emphases on picking up technique during the process of 3D-terrain (visualization) and interaction creation.
因此，在作战仿真领域研究三维地形环境的仿真具有重要的学术价值和应用价值。
Therefore, studying the simulation of three-dimensional terrain environment in the field of warfare simulation is highly valuable for academic study and application.
生成的三维地形的渲染速度达到了20~30帧，基本上满足了实时显示的要求。
The rate of creating third-dimension terrain can reach 20~30 frames per second. This rate can satisfy basically the need of displaying quickly.
本论文从分形布朗运动，三维地形建模和虚拟环境三个方面逐步进行了深入讨论。
The three aspect of the dissertation was discussed: fractal Brownian motion, 3D modeling and visual environment.
由于三维地形可视化及其实时显示有着广阔的应用背景，近来越发受到人们的关注。
Three dimensional terrain visualization and realtime display has become increasingly interesting in recent years because it has wide application backgrounds.
采用内插和外插相结合的方法填充等高线间的地貌信息，生成的三维地形效果较好。
The geomorphic information between the contours was filled by a combination of interpolation and extrapolation methods with good filling effects.
方法文中提出了一个利用粒子系统的方法来模拟三维地形中瀑布的运动和汹涌直下。
Methods: In this paper, a method of particle system is presented to simulate waterfall movement.
在小区规划，园林设计等与三维地形有关的数字分析中，地表面积是经常用到的数据。
When community programming planed, surface area is usually used to express digital analyze about three dimension terrain.
结果表明这种机器人有很强的适应复杂三维地形的能力，能较好地满足月球上行驶的要求。
The testing result shows that this king of robot is very capable to suit complex three-dimensioned landform and is able to satisfy fairly good the demands of exercising on the moon.
三维地形场景实时绘制在虚拟现实、地理信息系统、仿真系统等领域中占有十分重要的地位。
The rendering of 3D terrain scene is playing a key role in many research fields such as virtual reality, geographic information system and simulation system, etc.
三维地形是虚拟自然环境中不可缺少的因素，也是虚拟仿真领域中视景系统的重要组成部分。
Three-dimensional terrain is one of important factors of the natural scenes in virtual environment. It is also a significant composition of view system in virtual simulation field.
三维地形虚拟现实技术是当前计算机图形学、地理信息系统和数字摄影测量技术研究的热点问题。
The study on 3 D Terrain VR is a hot topic in Computer Graphic, Geographic Information System and Digital Photogrammetry.
该方法已成功应用于实际工程中，显示效果良好，并且具有通用性，可以应用于一 般的三维地形绘制。
The method has been successfully deployed in engineering and has achieved a good effect. Otherwise, the method also adapts to general terrain rendering.
该方法已成功应用于实际工程中，显示效果良好，并且具有通用性，可以应用于一 般的三维地形绘制。
The method has been successfully deployed in engineering and has achieved a good effect. Otherwise, the method also adapts to general terrain rendering.
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