三维地形地物融合方法研究与应用

为了提高大比例尺下的三维地形与地物融合效果,提出了一种新的地形地物融合方法。该方法利用三维地物的底面是平面这一特点,在统一坐标框架下,对地形数据进行预处理,消除了影响地形地物融合的高程点,再利用Delauney三角网算法生成TIN模型模拟地形。预处理过程修正了影响融合效果的高程点数据,提高了融合效果,同时减少了原始地形数据的数据量,从而提高了构建TIN模型的效率。结果表明,该方法能较好地实现三维地形地物的融合。

Research and application of fusion method between three-dimensional terrain and object

To improve the fusion effect between the 3D object and terrain in large scale scene,a new method for fusing the 3D object and terrain is presented.Firstly,in a uniform coordinate frame,this method pre-processes the terrain data by using the bottom plane of 3D object as a constraints condition,it eliminates the elevation points which effect the integration of terrain and model,and then it gene-rates the TIN model to simulate the terrain using Delaney triangulation algorithm.The preprocessing fixed the elevat...