基于Gerber文件的工业相机标定

Industrial Camera Calibration Based on Gerber File

为提升印刷电路板(PCB)视觉检测系统的精度,相机标定技术通常被用于矫正工业相机镜头。本文提出了一种基于Gerber文件的工业相机标定算法,利用Gerber文件产生相应的PCB标靶,将相机标定过程嵌入视觉检测系统,使标定过程不需要人为干预。实验结果证明,该方法在保证较高精度的同时提升了自动化程度。

In order to improve the accuracy of printed circuit board (PCB) visual inspection system, camera calibration system is usually used to correct the lens of industrial camera. In this paper, an indus-trial camera calibration algorithm based on Gerber file is proposed. The corresponding PCB target is generated by Gerber file, and the camera calibration process is embedded into the visual detection system, therefore the calibration process does not need human intervention. Experimental results show that this method can ensure high accuracy and improve the degree of automation.