线结构光三维测量系统中旋转轴的标定方法  

An Approach for Calibrating Rotor Position of Three-Dimensional Measurement System for Line-Structure Light

作　　者：吴庆阳[1] 李景镇[1] 苏显渝[2] 惠彬[1] 

机构地区：[1]深圳大学深圳市微纳光子信息技术重点实验室,广东深圳518060 [2]四川大学电子信息学院光电科学技术系,四川成都610065

出　　处：《中国激光》2008年第8期1224-1227,共4页Chinese Journal of Lasers

基　　金：国家自然科学基金(60477042;60127501);深圳大学科研启动基金(4WQY)资助项目

摘　　要：为简化旋转轴心线的定位,提出了一种基于平面参照物的现场标定方法.将一个绘制有棋盘格图案的靶标倾斜地放在旋转平台上,控制旋转平台任意旋转几个角度,并拍摄下每个位置处靶标的图片.通过处理这些图片获取靶标上特征点的空间坐标,对这些特征点作圆拟合得到一系列的圆心点,再对这些圆心点作直线拟合,建立起旋转轴的直线方程,完成旋转轴的标定.实验验证了该方法的可行性,实测物体的均方根误差为0.04 mm.To simplify the procedure of rotation axis positioning, a flexible and real-time calibration method is proposed. A plane calibration board with tessellated pattern is placed on the rotating stage, the calibration board was recorded at every point when the stage was rotated. Then the coordinates of these character points on the target are calculated by processing these pictures. At last, the axis equation of the working stage is acquired by linear fitting with the circle centers which were gotten by circle fitting with the character points. This method is proved by experiment, and the root-mean-square error of a measured object is 0.04 mm.

关 键 词：测量 三维传感 线结构光 标定 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置]