实验结果表明该模型能实现地形场景的实时浏览，提高地形场景的绘制效率。
The experiments show that and the real time dynamic browsing is achieved , thus the performance of terrain rendering is improved greatly.
实验结果表明，该算法有效地解决了绘制速度与质量之间的矛盾，较好地实现了大规模地形场景的实时快速漫游。
These algorithms solve the conflict between the rendering rate and the quality in an effect way and realize rapid the real-time ramble in large scale terrain scenes.
在地形可视化领域，实时绘制复杂地形场景的最有效工具是LOD技术。
In the field of terrain visualization, the most efficient tool for real-time rendering of complex landscape is level of detail (LOD).
建立合理的三维地形模型，对于实现实时绘制虚拟地形场景，逼真模拟地形环境，实现虚拟地形环境中的分析功能及其它相关控制有着重要的意义。
It is significant to construct a suitable terrain model for real-time rendering terrain scene, simulating terrain environment in reality and achieving analysis functionality in VTE.
随着分布式虚拟GIS在仿真和军事中的应用需求，大范围，海量地形数据在网络环境下实时绘制技术成为GIS研究的重点之一。
The increasing application demand of distributed virtual GIS in terrain landscape and military has made real-time interactive browsing massive terrain data in large areas under network environment.
地形实时绘制时LOD数据的选择是基于屏幕误差的。
In rendering time, the choosing of LOD is driven by screen space error.
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.
在前者中，针对于各种景物的特点提炼出了相应的建模方法，并提出了将显示列表、地形分割和顶点删除法相结合的地形简化绘制方法，实现了较大规模地形的实时显示；
The simplicity of drawing method is proposed by combine the method of displaying list, terrain segmentation and vertex removing, which fulfilled the real-time display of a great scale terrain.
所谓的LOD建模，其实质就是采用一定的算法思想将原有的网格地形数据进行重组，得到一种更加便于实时绘制使用的数据结构。
In reality, in order to get more convenient data organization for drawing, LOD model is to use theory of algorithms to reform intrinsic grid topographic data base.
三维地形可视化仿真技术是虚拟现实的重要手段之一，主要研究真实感三维地形建模和三维地形可视化的实时绘制。
Visual 3D terrain simulation technology is an important means of virtual reality, which deals with realistic 3D terrain modeling and 3D terrain visualization real-time drawing mainly.
洪水演进仿真环境的绘制包括三维地形建模和地形地貌实时绘制，源发型洪水演进动态仿真技术的关键是流域河道边界自搜索模型的建立。
The key technology of the dynamic simulate of the original flood evolvement is the design of the self-control search model of the boundary of the watercourses drainage area.
实验证明，该方法对于实时控制大规模地形模型的细节 层次，增强大规模地形模型的绘制效率是非常有效的。
The experiments show that this algorithm is very good of the real-time LOD controlling for large scale terrain visualization and also for the real-time rendering.
实验证明，该方法对于实时控制地形模型的细节层次，增强地形模型的绘制效率是非常有效的。
The experiments show that this algorithm is very good for the real-time LOD controlling of terrain and also for the real-tim…
为了实时地绘制大规模地形数据，提出了一种改进的实时连续LOD生成算法。
In order to render massive terrain data in real time, this paper presents an improved LOD algorithm.
大规模地形场景在绘制时，通常需要对数据进行适当的处理，以满足实时性的要求。
The data should be properly handled when the large-scale terrain environment is been rendered, it is of great necessity to meet the requirement of real-time rendering.
三维表现系统，是建立在计算机图形绘制技术的基础上，对地球表面的海量地形和城市中的大规模建筑群进行实时绘制的系统。
A 3D rendering system is such a system that draws the massive terrain and cities on the earth based on computer graphic technology.
三维表现系统，是建立在计算机图形绘制技术的基础上，对地球表面的海量地形和城市中的大规模建筑群进行实时绘制的系统。
A 3D rendering system is such a system that draws the massive terrain and cities on the earth based on computer graphic technology.
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