摘要
针对目前现有视觉传感器标定方法专业性强,靶标制作复杂的现状,以及焊后视觉检测用复合光源视觉传感器的应用环境特点,提出一种简便的利用平面模板与改进型锯齿靶标组合的视觉传感器标定方法。该方法首先利用基于平面模板两步法原理开发的Matlab标定工具箱来完成摄像的内部参数与外部参数标定,然后利用获取的内部参数,结合改进的锯齿靶标方法来实现传感器的结构参数标定。试验结果表明,该方法能够实现对复合光源焊后视觉传感器的精确标定,并且标定过程简单方便。
In order to solve the existing calibration problems based on vision sensor such as requirement of speciahzed knowledge for calibration,complicate calibration target procedure,and application environment characteristics of composite light vision sensor in post-weld inspection,a simplified calibration method with compound of planar pattern and improved serrated target was proposed.Firstly,the intrinsic parameters of the camera were calibrated by camera calibration toolbox for Matlab based on the planner pattern two-stage calibration principle.Then the structured parameters of sensor was obtained by the intrinsic parameters results and the improved serrated target calibration method The experimental result shows that this method can calibrate composite light post-weld vision inspection sensor accurately,and the calibration procedure is simple.
出处
《焊接》
北大核心
2014年第5期63-67,76,共5页
Welding & Joining
关键词
平面模板
改进型锯齿靶标
焊后视觉传感器
标定
planner pattern
modified serrated target
post-weld vision inspection sensor
calibration
