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Weld inspection and tracking of laser welding head

Research output: Contribution to journalArticlepeer-review

Abstract

The laser welding head is integrated with the CCD video tracking module, and a method for automatic scam detection based on a word line laser is proposed. This method uses laser triangulation to obtain the height, width, and other shape information of the weld. In the aspect of image processing, we perform median filtering and binarization on the obtained weld area image to obtain the two-dimensional coordinates of the weld feature points, achicvc target position and calculatc its three-dimensional coordinates in the world coordinate system. In the tracking algorithm, wc use high accuracy and high speed kernel correlation filters target tracking algorithm to track the positions of common straight and curvcd welds. The verification experimental results show that the fitting curvc and weld shape error are within 5%, the degree of coincidcncc is high, and the real-time tracking cffcct is good.

Original languageEnglish
Article number111508
JournalLaser and Optoelectronics Progress
Volume55
Issue number11
DOIs
StatePublished - 2018
Externally publishedYes

Keywords

  • Image processing
  • Kernel correlation filters tracking algorithm
  • Laser triangulation
  • Laser welding head
  • Machine vision
  • Weld inspection

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