Research on Key Technologies of PCB Defect Detection Based on Machine Vision
Machine vision technology is widely used in the industrial field,which can capture,classify,an-alyze,and detect different types of products.This article analyzes the possible image distortion or data distortion during the Automated Optical Inspection(AOI)process of PCB detection,and it proposes a nine point calibra-tion method.Through machine vision platform verification,the nine point calibration method accurately achieves the conversion of world coordinate data and image coordinate system data.The nine point calibration method ob-tains the expected data results.PCB detection can be quickly mass-produced in product quality inspection,which has good application prospects and reference value.