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Spatter Tracking in Laser Machining

  • Timo Viitanen
  • Jari Kolehmainen
  • Robert Piché
  • Yasuhiro Okamoto
Part of the Lecture Notes in Computer Science book series (LNCS, volume 7432)

Abstract

In laser drilling, an assist gas is often used to remove material from the drilling point. In order to design assist gas nozzles to minimize spatter formation, measurements of spatter trajectories are required.

We apply computer vision methods to measure the 3D trajectories of spatter particles in a laser cutting event using a stereo camera configuration. We also propose a novel method for calibration of a weak perspective camera that is effective in our application.

The proposed method is evaluated with both computer-generated video and video taken from actual laser drilling events. The method performs well on different workpiece materials.

Keywords

Camera Calibration Fundamental Matrix Proposal Distribution Camera Model Laser Machine 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Timo Viitanen
    • 1
  • Jari Kolehmainen
    • 1
  • Robert Piché
    • 1
  • Yasuhiro Okamoto
    • 2
  1. 1.Tampere University of TechnologyFinland
  2. 2.Okayama UniversityJapan

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