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激光测量技术具有高分辨率、快速、非接触和数字化的特点,其应用日益广泛。基于激光测量的散乱点云,研究测量点云的数据处理方法。在分析通常的数据处理流程与方法的基础上,重点研究了如何应用数据的虚拟切割技术和测量点云的虚拟投影技术。点云虚拟切割技术主要包括径向/轴向切割技术、柱面切割技术与指定切割半径处的轴向截面切割技术。点云虚拟投影技术主要包括规则特征投影技术和轴向旋转投影技术。基于点云的虚拟投影,阐述了零件的参数提取策略。通过基于激光测量的零件数字化检测的实践表明所提出的点云数据处理方法与策略是行之有效的。
Laser measurement technology with high resolution, fast, non-contact and digital features, its increasingly widespread use. Based on the scattered point cloud of laser measurement, the data processing method of measuring point cloud is studied. Based on the analysis of the common data processing flow and method, this paper focuses on how to apply the data virtual cutting technology and virtual projection technology to measure point cloud. Point cloud virtual cutting technology, including radial / axial cutting technology, cylindrical cutting technology and the specified cutting radius of the axial section cutting technology. Point cloud virtual projection technology includes regular feature projection technology and axial rotation projection technology. Based on the virtual projection of point cloud, the parameter extraction strategy of the part is expounded. The practice of digital detection of parts based on laser measurement shows that the proposed method and strategy of point cloud data processing are effective.