Research on structured light visual inspection system for Weld of tailored blanks laser welding

In the seam surface quality visual inspection system of tailored blanks laser welding,the main purpose of image processing is to extract the centerline of structured light stripe and the feature points.On the further study of image processing method of seam quality inspection system,presents a reasonable and efficient image processing method for seam quality inspection system.In the image preprocessing,the paper uses adding window operation to obtain the region of interest and adopts median filter to remove the noise interference.In the image postprocessing,it used a template to detect the edges of the structured light stripe,and then applies geometrical center method to extracting the centerline of structured light stripe,after that,the author uses slope analysis to detect the feature points.The experiment results demonstrate that the proposed method,which has the advantages of higher reliability and stronger anti-interference ability,lays a foundation for the realization of on-line inspection of seam surface quality visual inspection system.