摘要
提出了一种基于共面点的世界坐标唯一全局标定方法。利用激光跟踪仪在现场构建系统总体坐标系,通过拟合基准面来设置共面标定点,系统中各摄像机传感器直接获得标定点的图像,从而实现了各局部相机的全局标定,不需要中间坐标系的转换,避免了多次坐标转换带来的精度损失。在实际的由多个高速视觉传感器组成的飞行器外部姿态测量系统中进行标定实验表明,在测量范围较大的情况下,系统精度的均方根误差不超过0.8 mm,整个标定过程简单,基本满足实际测量的高精度要求。
A unique world coordinate based global calibration method with coplanar targets was proposed.By taking a laser tracker to establish the general measurement coordinate frame and by fitting the standard plane to set up the calibration points,the system was used to acquire the images of the calibration points for each camera in the multi-vision inspection system,then,all the cameras in the measurement system can finish global calibration without medi-coordinate-frames,the accuracy loss from transformation time...
出处
《光学精密工程》
EI
CAS
CSCD
北大核心
2008年第3期467-472,共6页
Optics and Precision Engineering
基金
国家自然科学基金资助项目(No.50275040)
关键词
全局标定
视觉测量
激光跟踪仪
共面点
global calibration
vision measurement
laser tracker
coplanar target
