A Seam Deviation Real-Time Detection Method Based on Laser Vision Technology

This paper introduces a method of monitoring seam center real-time, and it can overcome the environment factor effectively. The seam image processing procedure including: Firstly, the seam image is tested by machine vision system based on structured-light. Then, the laser stripe direction is divided reliably by threshold segmentation and filtering based on MATLAB. Thirdly, the seam center is tested accurately by extremum method. Lastly, the laser stripe, corresponded by welding gun, is located by averaging method. The results suggest that the discrepancy fits the welding requirement.