本文着重研究三维分形地形模型的构建及其可视化系统的实现。
This thesis focuses on the establishment of 3d fractal terrain model and the achievement of the visualization system.
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.
随机分形法和曲面造型法分别在地形生成的随机性和可控性方面能起到一定的作用。
There exist already methods for combining random mid-point displacement method with curved-surface modeling to generate mountain 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.
挪威的内陆地形崎岖，近三分之一被树木覆盖。
The interior of the country is incredibly rugged and almost one third of it is covered in trees.
由于煤炭开采而形成的塌陷区地形形态复杂，本文利用分形插值理论模拟了塌陷区地形。
The terrain in the subsided area generated by mining is complicated, in this paper, we apply fractal interpolation to simulate the fractal terrain in the subsided area.
山地城市与平原城市比较，在地形地貌、空间形态和景观格局等方面表现出了独特的分形美学特征。
In contrast with plain cities, mountainous cities represent particular characteristics of fractal aesthetics in urban landform, spatial form and landscape organization, etc.
为了制备高分辨率的地形图，建立了地形的分形模型，然后进行插值处理。
Fractal terrain model is established for interpolation to obtain terrain graphs of high spatial resolution.
较之传统方法，本文的方法简单易行，能保持真实地形的基本信息和充分的分形细节。
Compareing with traditional methods, it is easy getting and keeping the basic information of the real terrain with sufficient details.
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.
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.
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