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目前对于点云数据配准的方法有很多种,如直接法、特征法、辅助法等,由于在小范围测量中采用辅助法中的人工标志法最多也最为方便,人工标志法中标志的数量及位置关系会影响到点云数据配准的精度和可靠性。本文主要通过变换标志布设的位置及标志的数量研究了其对点云数据配准精度的影响,并仿照GPS测量中的DOP值与测量精度的关系,将标志点与基准测站构成一个多面体,并分析了多面体的体积与点云数据配准精度的关系,为实际的测量工作提供理论和实验依据。
At present, there are many methods for registration of point cloud data, such as direct method, feature method, auxiliary method, etc. Because of the most convenient and most convenient method of using artificial marks in the auxiliary method in small-area surveying, the number of marks in the artificial marks And the location relationship will affect the accuracy and reliability of point cloud data registration. In this paper, we mainly study the influence on the registration accuracy of point cloud data by changing the location and the number of the sign layout. According to the relationship between the DOP value and the measurement accuracy in the GPS measurement, the sign point and the base station form a polyhedron, The relationship between the volume of polyhedron and the registration accuracy of point cloud data is also analyzed. The theoretical and experimental evidences are provided for the practical measurement.