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如何有效地提高多站点云配准的精度和效率,使地面三维激光扫描技术广泛应用到大场景监测项目中是近年研究的热点。随着单站点云数据量的不断增加,传统的点云配准方法效率低、精度差,容易引起误差的传播。通过设计定位基座,直接对地面三维激光扫描仪进行定位,并根据提出的控制网定向法对其进行定向,使地面三维激光扫描仪可以直接获取目标坐标系下的点云数据。同时本文提出了定位基座的设计原理和检校方法,并通过实例分析比较,证实了该方法具备高精度和高效率。
How to effectively improve the accuracy and efficiency of multi-site cloud registration, making the ground 3D laser scanning technology widely used in large scene monitoring projects is a hot spot in recent years. With the increasing amount of single-site point cloud data, the traditional point cloud registration method has low efficiency and poor accuracy, which easily causes error propagation. By designing the positioning pedestal, the three-dimensional laser scanner is positioned directly on the ground and the directional net method is used to orient the three-dimensional laser scanner so that the terrestrial 3D laser scanner can directly obtain the point cloud data in the target coordinate system. At the same time, this paper presents the design principle and calibration method of the positioning base, and through example analysis and comparison, it proves that the method has high precision and high efficiency.