系统而详实了解覆盖地球表面三分之二的海洋水域的化学特性、地形及水流特性代价高昂，但是可以实现的。
Systematic and detailed understanding of the chemistry, topography and flow of the waters that cover two-thirds of the planet would be costly, but it could be achieved.
我们可以通过将地图类型多次放入脚本中，为各种地形类型提供不同的权重，并且创建地形类型可以实现的更复杂规则。
We can give individual terrain types different weights by pushing them into the pool multiple times and create more complex rules about what terrain types can touch.
论述了从地形图中提取等高线、对等高线矢量化以及通过矢量数据生成高程数据的实现方法。
In this paper, the methods of drawing contour line from terrain map, the vector of contour line and generating elevation data from vector data are discussed.
为了减少相邻帧画面在地形不同层次细节之间变化所引起的几何跳跃，采用了滞后合并的方法来实现动态构网过程的几何过渡。
To mitigate the visual "popping" during the detail level transit, we introduce a deferred merging method to realize the geomorphing in terrain mesh refinement.
实现这一效果最有效、最常用的方法之一就是落地窗，它使地形的边界隐含其中。
One of the most effective and common methods to achieve this effect are the panoramic Windows, which make the boundary of the property implicit.
进而引出了动态多细节水平地形渲染的实时算法，并给出其实现过程及实验结果。
Then educes the real time algorithm of dynamic level of detail terrain rendering and gives out its realizing process in detail.
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.
文中介绍了高等级公路三维视景的建模过程、实现方法，以及地形的简化技术。
This paper introduced the modeling process and realization method and terrain simplification of the freeway three-dimensional scene.
实验结果表明，该研究成果能够实现真实感海量地形数据的实时可视化与交互操作。
The experiment results show that this approach can achieve good performance for real-time rendering of massive terrain dataset.
为了实现运动物体与地形的匹配，采用了一点匹配法和面匹配法。
The spatial discretization method is used to detect the fast collision among moving objects and collision between moving objects and terrain.
海量地形技术对于数字地球的实现起着举足轻重的作用。
Massire terrain technology is very important to the realization of digital-earth.
你可以轻易地在对战地图里实现此类地形。
文章简要总结了LOD进行地形简化的一般方法，介绍了一种通过稀疏采样技术实现LOD自动生成的算法。
The general methods of terrain simplification with LOD is summarized briefly in this paper. An algorithm of LOD automatically generation through sparsely resampling technique is presented.
主要讨论了如何利用改进的离散数据网格化方法快速实现离散地形数据预处理。
This thesis mainly discussed how to make use of the improved arithmetic of discrete data gridding to quickly realize discrete data pretreatment.
主要研究如何在大型动力学软件ADAMS中实现数字地形的构建。
The paper mainly researches how to construct digital terrain in big type mechanical dynamics software ADAMS.
实现的算法可以直接应用于数据挖掘、数字网格划分与评估、数据分割、数值地形曲面的简化等问题。
The algorithm can be directly applied to data mining, digital grid partitioning and estimation, data partitioning, digital terrain surface simplification, etc.
基于DEM骨架特征点线进行地貌的自动综合，是通过提取DEM地形骨架特征数据来实现地貌自动综合，是对地貌自动综合新方法的探索。
It is a new approach to explore relief Automated Generalization, based on DEM skeleton characteristic point and line to automate generalize relief, through the extraction DEM terrain skeleton c.
这种方法的优点是能够在保证不降低网格精度的情况下实现网格DEM数据的压缩以及三维地形上面片的简化。
The merit of this method is it can compress the DEM data and simplify the terrain grids without precision reducing.
为实现地形漫游，提出基于三角形二叉树的地形网格模型动态简化算法，实现了与视点相关的连续多分辨率简化及快速动态绘制。
This paper proposes a dynamic simplification algorithm for the terrain model based on the Triangle Subdivision Bi tree to realize continuous view dependent multi resolution rendering of terrain mesh.
地形地籍成图系统CASS不仅可以连通数字化成图系统与GIS的接口，还可以实现简码的用户化和图式符号的自定义编辑。
CASS, which is the topographical and cadastral survey system, not only can link digital mapping system and interface of GIS, but also customize the personal code and custom the cartographic symbol.
利用历史资料实现了海域水深注记点的自动内插、海底地形特征点的自动选取和等深线的自动生成。
Automatic interpolation of charted depth annotated point, automatic selection of Marine topography feature point and automatic build of bathymetric contour come true by using history data.
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.
为此，本文基于频谱合成法，提出并实现了一种生成各向异性分形地形的新方法，该方法通过指定分形曲面谱密度来实现分形的各向异性。
Therefore, we present a new method to generate anisotropic fractals based on spectral synthesis method. It gets anisotropic fractals by specifying the spectral density of the terrain surface.
实验结果表明，该算法可以有效提高ROAM算法性能，能以较高帧速实现大规模地形的实时漫游。
Experimental result shows that this algorithm can efficiently improve the performance of ROAM algorithm and can be used in real-time walkthroughs in large-scale terrain at high frame rates.
在判断过程中本文将地形粗糙度因素加入到节点评价系统当中，有效地实现了地形的简化。
In this paper, the roughness of the terrain was considered in the valuation system, it was simplified the terrain efficiently.
通过引入分子束附生领域中粒子沉积的概念，在模拟一般地形的基础上，更好的实现了火山、岛屿等一类特殊地形的三维地形绘制。
With the conception of particle deposition, some terrain types like crater, islands could be rendered better while the usual terrain could still be rendered very well.
仿真结果表明，广义预测控制方法能够有效地减小跟踪误差，从而实现精确的地形跟踪。
Simulation results show that the tracking errors can be reduced efficiently and accurate terrain following can also be achieved when the generalized predictive control method is introduced.
介绍了工程地形图自动绘制系统实现过程中所采用的几个有效技术。
The paper presents several effective technique adopted in the implementation of an automatic plotting system for the engineering topographic maps.
介绍了工程地形图自动绘制系统实现过程中所采用的几个有效技术。
The paper presents several effective technique adopted in the implementation of an automatic plotting system for the engineering topographic maps.
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