基于精密运动的激光平面标定方法

摘要

Spatial reference is lack for the calibration of the laser plane in three-dimensional measurement based on hand-hold light sectioning method.This paper proposes a laser plane calibration method based on precise movement.A checkerboard calibration target is adopted as spatial reference.Laser is projected on the checkerboard.The position of two straight-lines on the laser plane in the camera coordinate system is solved through the movement of checkerboard driven by milling.The position of the laser plane is determined by the amendment method for the straight lines of different surface.Experimental results confirm that the proposed method has good performance on accuracy and robustness.%在基于手持光刀法的三维测量中,激光平面标定缺少空间参照.针对该问题,提出基于精密运动的激光平面标定方法引入棋盘格标定靶作为激光平面的空间参照,将激光投射于棋盘格标定靶,通过铣床带动棋盘格标定靶精密运动,解算激光平面上两直线在摄像机坐标系下的位置,利用异面直线修正法确定激光平面的位置.实验结果表明,该方法具有精度高、鲁棒性好的特点.