The introduction of AOI in PCB defect detection based on linear array camera

摘要

Along with the rapid development of computer technology and digital image processing, traditional PCB technology of defect detection could not meet the demand of the quality of PCB, meanwhile AOI has received increasing attention. This paper mainly introduces the AOI machine based on PCB defect detection, hardware structure and software system is respectively carried on the design. In addition, provide a new method of defect detection which is based on the comparison of contour and introduce the process of camera calibration chiefly.