三维激光扫描精度评定及控制方法研究
Research on Evaluation and Control Method of 3D Laser Scanning Accuracy

针对三维激光扫描成果无可靠精度评定方法的空白，本文首先对三维扫描精度评定现状进行了探讨，提出了采用控制测量与三维激光扫描结合的方法，以此对点云成果的精度进行评定。以水泥库测绘项目为例，详细介绍了两种技术结合的主要作业流程，通过控制点融合将点云成果的精度评定为水平平均中误差为3.8 mm，高程平均中误差为0.082 mm。同时，提出了一种以高精度全站仪单测站点位来控制三维扫描整体模型精度的方法，在水泥库测绘项目中进行测试论证，结果表明，该方法具有一定的控制作用。
In this paper, in view of the lack of reliable accuracy evaluation methods for 3D laser scanning re-sults, the current situation of 3D scanning accuracy evaluation is discussed first, and a method com-bining control measurement and 3D laser scanning is proposed to evaluate the accuracy of point cloud results. Taking the cement warehouse mapping project as an example, the main operation flow combining the two technologies is introduced in detail. Through the fusion of control points, the accuracy of point cloud results was assessed as the mean horizontal error of 3.8 mm and the mean elevation error of 0.082 mm. At the same time, a method of controlling the accuracy of the 3D scan-ning model by using a high-precision total station to measure a single station position is proposed. The test results show that the method has a certain control effect in the project of cement ware-house mapping.