Automatic Inspection of Small Component on Loaded PCB Based on Mean-Shift and Support Vector Machine

Automatic inspection of small components on loaded Printed Circuit Board (PCB) is difficult due to the requirements of precision and high speed. In this paper, a mean-shift and Support Vector Machine (SVM) based method for inspection of small components on loaded PCB is presented. Firstly, the images of small components are smoothened using mean-shift method and then their binary images are obtained by adaptive segmentation algorithm. Next, some features are extracted from the binary images and are input to a trained SVM to diagnose whether the small components are located correctly. The experimental results show that the proposed approach is effective and feasible to inspect small components on loaded PCB.