A dynamic lighting system for automated visual inspection of headlamp lenses

  • Authors:
  • S. Satorres Martínez;J. Gómez Ortega;J. Gámez García;A. Sánchez García

  • Affiliations:
  • Electronic Engineering and Automation Department, University of Jaén;Electronic Engineering and Automation Department, University of Jaén;Electronic Engineering and Automation Department, University of Jaén;Electronic Engineering and Automation Department, University of Jaén

  • Venue:
  • ETFA'09 Proceedings of the 14th IEEE international conference on Emerging technologies & factory automation
  • Year:
  • 2009

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Abstract

This paper presents a novel lighting system to reveal surface defects on transparent parts with non-planar surface. Thanks to this system, the defect segmentation is straightforward and fast to compute and so a real-time inspection of these parts is possible. To aid in the conception of the imaging conditions, the lighting system is completely described and also a comparative study with others commercial lighting systems is done. Then, a new adaptive threshold selection algorithm for defect segmentation is proposed. Finally, the system performance is assessed using a commercial model of headlamp lens.