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A Sub-Regional Calibration Method That Can Accomplish Error Compensation for Photoelectric Scanning Measurement Network

机译：可以完成光电扫描测量网络误差补偿的次区域校准方法

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摘要

In the measurement process of photoelectric scanning measurement network, the laser surface edge area has lower measurement accuracy than the middle area due to the geometrical distortions of the laser surface of the transmitter. This paper presents a sub-regional calibration method that can accomplish error compensation for the measurement system. Unlike the camera sub-regional calibration, the regional division and identification of the laser surface are more difficult. In this paper, the pitch angle in the transmitter coordinate frame of the spatial point was used as the basis for the division and identification of the laser surface. In the calibration process, the laser surface of the transmitter was divided into different regions and each region was calibrated independently, so that an intrinsic parameters database containing the intrinsic parameters of different regions could be established. Based on the database, the region identification and error compensation algorithm were designed, and comparison experiments were carried out. With the novel calibration method, the measurement accuracy of the system had an obvious upgrade, especially at the edges of the laser surface within a certain measurement area, which could enlarge the effective measurement area of the transmitter and would broaden and deepen the application fields of photoelectric scanning measurement network.
机译：在光电扫描测量网络的测量过程中，由于发射器激光表面的几何畸变，激光表面边缘区域的测量精度低于中间区域。本文提出了一种可以实现测量系统误差补偿的分区校准方法。与照相机的子区域校准不同，激光表面的区域划分和识别更加困难。本文以空间点发射机坐标系中的俯仰角为基础，对激光表面进行了划分和识别。在校准过程中，将发射机的激光表面划分为不同的区域，并分别校准每个区域，从而可以建立包含不同区域的内在参数的内在参数数据库。基于该数据库，设计了区域识别和误差补偿算法，并进行了对比实验。采用新颖的标定方法，系统的测量精度有了明显的提高，特别是在一定测量区域内的激光表面边缘，可以扩大发射机的有效测量区域，拓宽和深化了传感器的应用领域。光电扫描测量网络。

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