采用线性分区方法对三维传感器的标定

以光带法激光三维扫描系统为例，采用线性分区标定方法对三维传感器进行了标定。给出了标定方法的理论依据和求解过程，避免了对非线性方程的求解；采用细丝标定靶形成共面标定点对传感器进行分区标定，并与不采用分区方法时的结果进行对比。结果表明，利用线性分区法标定可以有效提高测量精度，测量平均相对误差为0．4％左右。

Calibration of 3D Sensors with Linear Partition Method

Based on a three-dimensional(3D) laser scanning system using a light stripe method,Linear Partition Method(LPM) was proposed to calibrate the 3D sensors.First,the principle of the 3D laser scanning system was presented;then based on the pinhole model,the principle and solution procedure of the LPM was deduced in detail;finally,co-planar calibration points formed by a filament target were used to calibrate the 3D sensor,and the comparison was made with the results without using the LPM.The final results indicate that the mean relative error of the measurement without using the LPM is about 1.4%,however,calibration using the proposed method in this paper can improve precision significantly and the mean relative error of the measurement is about 0.4%.The results show that the LPM can not only avoid solving nonlinear equations,but also improve the calibration precision by a simple but efficient way.