Transactions of Materials and Heat Treatment

Title：Design of on-line detection system for drawing defects

Authors： Xu Xin Xiao Xiaoting Wen Xichang Xie Jiajing

Unit： Guangdong University of Technology

KeyWords： stamping production line drawing defects image processing on-line inspection camera calibration

ClassificationCode：

year,vol(issue):pagenumber：2016,41(7):97-101

Abstract：

For the problem of manual detection drawing defects, the design scheme of an on-line automatic detection system was put forward on the stamping production line. In the scheme, the image processing and the output of detection were achieved through the joint development of Halcon and VC++ including camera calibration，image smooth processing，the segment of surface defects with dynamic threshold. Furthermore, the auto-detection function on surface defects of drawing parts in stamping production line was achieved by identification of crack defects with morphology processing，classification and measurement of crack defects and output of the length and the shape of the crack defects etc. During the camera calibration, camera calibration method based on Halcon was carried out, and the transformation between image coordinate and three-dimensional coordinates of the world could be obtained to achieve automatic measurement of defect features accurately. This scheme is of good stability, and the detection efficiency is improved.

Funds：

广东省战略性新兴产业发展专项（2012A090100014）；广东工业大学2015年大学生创新项目(yj201511845110)

徐信（1990-），男，硕士研究生

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