基于激光扫描数据的三维场景仿真

3D Scene Simulation Based on Laser Scanning Data

通过利用地面三维激光扫描仪获取的空间数据,进行了三维空间地物建模研究。首先分离提取建筑物地物,然后对得到的数据进行去噪处理,再通过整体匹配纠正并对原始测量数据进行重新采样和拼接配准,建立了由三角网构成的三维表面模型,最后在虚拟现实环境中实现了三维场景仿真。

3D (three-dimensional) laser scanning can be used to collect spatial location of points rapidly and abundantly, and obtain three-dimensional coordinates of the target surface, which provides new technical means for the rapid creation of three-dimensional image model of the object. A three-dimensional modelling study on spatial object was carried out using the spatial data captured via ground-based 3D laser scanner. First of all, separation and extraction of ground objects from laser scanning data were done, and then the noises were removed from the building data acquired before. Furthermore, the whole matching correction was implemented after the target object was recognized and the features of point, line and polygon were extracted. Afterwards, the original measurement data were re-sampled and registered. Finally, triangular meshes were built to generate a three-dimensional surface model. The experiment result shows that rapid 3D visualization modelling on buildings can be achieved via the methods and procedures mentioned above.