Vision-Based Profile Generation Method of TWB for a New Automatic Laser Welding Line
An on-line vision inspection sensor system for the automation of laser welding processes in heavy industries is presented. A method of image process and features extraction for structured light image of laser welding has been developed. In order to set the range of interest, the Radon Transform is applied to determine the x and y coordinate in image coordinate system. For image de-noising, the median filtering and bi-level thresholding are used. Furthermore, the middle line of the laser stripe is extracted. Finally, a five step search method is carried out to examine the bead width. A series of experiments show that the proposed method in this paper is effective, and its detection precision is much better than traditional methods.
image processing weld defect detection structure light vision features extraction
Lei Zhang Mingyang Zhao Lihua Zhao
Shenyang Institute of Automation, Chinese Academy of Science;Graduate School of the Chinese Academy Department of Economic Management Shan Dong Second College of Technology Liaocheng, Shandong Provinc
国际会议
2007 IEEE International Conference on Automation and Lofistics
山东济南
英文
2007-08-18（万方平台首次上网日期，不代表论文的发表时间）