A scanning method for industrial data matrix codes marked on spherical surfaces

  • Authors:

  • Ion-Cosmin Dita;Marius Otesteanu;Franz Quint;Nagaraju Annamdevula

  • Affiliations:

  • Politehnica University of Timisoara, Faculty of Electronics and Telecommunications, Timisoara, Romania;Politehnica University of Timisoara, Faculty of Electronics and Telecommunications, Timisoara, Romania;University of Applied Sciences, Karlsruhe, Faculty of Electrical Engineering and Information Technology, Karlsruhe, Germany;University of Applied Sciences, Karlsruhe, Faculty of Electrical Engineering and Information Technology, Karlsruhe, Germany

  • Venue:
  • SITE'12 Proceedings of the 11th international conference on Telecommunications and Informatics, Proceedings of the 11th international conference on Signal Processing
  • Year:
  • 2012

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Abstract

In this paper we provide a method to localize the modules of the industrial Data Matrix Code (DMC) marked on curved surfaces. An imaginary grid of points is constructed which has the same orientation as the surface. The imaginary grid is projected on to the image and according to this grid the modules of the code are scanned. If the surface considered is not a perfect sphere then the results are not accurate. To overcome this using an error correction based on the assumed centers and the computed centers a better approximation is obtained. Using this method we can localize the modules irrespective of the camera view or orientation of the DMC.