地下巷道三维模型的建立及其可视化研究

【作者】 张治木；

【导师】 方源敏；

【作者基本信息】 昆明理工大学 ， 大地测量学与测量工程， 2005， 硕士

【摘要】 目前,GIS的应用大多任以二维方式来处理空间上三维连续分布的现实世界,利用现有的GIS工具处理三维问题的能力仍然不足,在矿山、地质、地球物理等领域非常需要对三维连续空间进行表达或可视化。二维GIS在描述真三维实体存在着局限性,而诸多领域迫切需要三维GIS的应用,如城市规划、地质、气象等等,因此,三维GIS的研究是GIS理论和应用发展的重要方向。三维GIS的应用如此广泛,要采用单一的模型对各种类型的空间实体进行有效的描述是不现实的。 针对地下巷道的特点,本文应用了规则格网的方法,讨论了地下巷道的三维模型的建立方法。在此基础上,采用面向对象的开发工具Visual C++结合三维图形开发工具OpenGL来实现。实现了巷道的三维可视化和一些3D GIS的交互操作和空间分析功能,比如:空间坐标查询、断面切割、距离查询等。最后对试验结果进行了总结,提出了有待解决的问题和不足之处。更多还原

【Abstract】 At present, the applications of Geo-Information System (GIS) is in the level, which deal with the continuous three dimension object by the means of two dimension way. The capacity of disposing three-dimension problem is still scant which use present tools; it needs to visualize the objective entities very much in the mine, geologic and physical geography field ect.2D GIS has some limitation in representing the 3D entities, In most field, 3D GIS need to be used imminently, such as city planning, geology and weather ect. So the search of 3D GIS is the important development way of the GIS theory and utility. 3D GIS couldn’t dispose efficiently all the type of spatial entities, if we just adopt a method, for the use of 3DGIS.A regular grid method is used in this article, according to the specialty of the underground passage, the method how to establish 3D model of the underground passage is be discussed. Base on this way, a type of object-oriented development tool — visual C++ and OpenGL(Open Graphics Library),is adopted to realize the visualization of the underground passage. The experiment program realizes a few interactive operation functions and some spatial analysis function. We can roam in this application program; query the coordinate of the point we have selected; it has realized get section-cutting. graphics and the distance of two points in the space. Finally, discussing the testing system’s characteristic, and putting forward some questions and shortcoming to be disposed.更多还原