视觉焊接下的改进摄像机标定算法  

Improved camera calibration algorithm for visual welding

作　　者：王雷 徐晓光 朱雪燕 WANG Lei;XU Xiao - guang;ZHU Xue - yah(Anhui Polytec＇hnic University,Wuhu 241000 China)

机构地区：[1]安徽工程大学电气工程学院,安徽芜湖241000

出　　处：《新余学院学报》2017年第6期6-9,共4页Journal of Xinyu University

摘　　要：在基于视觉的自动焊接系统中,摄像机标定是准确实现自动焊接的前提和关键。在张氏标定方法做了详细分析,并对张氏标定法进行了改进。该方法以基于张氏标定法的MATLAB标定箱为基础,首先利用FAST算法自动提取角点,然后代入MATLAB标定箱,获取摄像机参数。该方法由于FAST算法可以自动获取角点,无须手动设置,减少了像素误差,可以满足自动焊接要求。In the visual automatic welding system, the camera calibration is the premise and key of accurate realization of automaticwelding. This paper introduces the imaging model of the camera, analyzes tile method of Zhang calibration, and improves the calibra-tion method. The method is based on the MATLAB calibration box based on the Zhang calibration method. It first uses the FAST algo-rithm to automatically extract angle points and then substitutes the MATLAB calibration box for the camera parameters. The metbod canautomatically obtain the corner point without manual setting, and the pixel error can be reduced to meet the automatic welding require-night.

关 键 词：自动焊接 摄像机标定 张氏标定法 FAST算法 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]