基于椭球面投影的散乱点云建立三角格网方法

空间点云数据建立三角格网是三维激光扫描数据处理中重要的处理内容之一。已有的点云三角格网建立方法的网形结构良好,但存在数据量大、计算效率低的特点。提出借助椭球面进行高斯投影建立点云的空间三角格网建立方法,有效地实现四周型点云数据格网建立过程。结合某矿井点云数据实例,对基于圆柱面和椭球面投影的两种方法建立的三角格网进行对比,结果表明,利用椭球面投影法建立三角格网能更有效地建立顶部和底部点云数据的拓扑关系。

Triangular grid establishment based on disordered point cloud of ellipsoidal surface projection

The spatial point cloud data to establish a triangular grid in 3D laser scan data processing is one important process.Previous methods of establishing triangular grid are shape and structurally sound,but have problem to calculate the characteristics of low efficiency with large amount of points.In this paper,carried out with Gaussian ellipsoid projection for the establishment of point cloud to establish triangular grid method,effective implementation of the surrounding grid-based point cloud data building p...