Open Access

New Structured Illumination Technique for the Inspection of High-Reflective Surfaces: Application for the Detection of Structural Defects without any Calibration Procedures

  • Yannick Caulier1Email author,
  • Klaus Spinnler1,
  • Salah Bourennane2 and
  • Thomas Wittenberg1
EURASIP Journal on Image and Video Processing20072008:237459

DOI: 10.1155/2008/237459

Received: 31 January 2007

Accepted: 29 November 2007

Published: 29 November 2007

Abstract

We present a novel solution for automatic surface inspection of metallic tubes by applying a structured illumination. The strength of the proposed approach is that both structural and textural surface defects can be visually enhanced, detected, and well separated from acceptable surfaces. We propose a machine vision approach and we demonstrate that this technique is applicable in an industrial setting. We show that recording artefacts drastically increases the complexity of the inspection task. The algorithm implemented in the industrial application and which permits the segmentation and classification of surface defects is briefly described. The suggested method uses "perturbations from the stripe illumination" to detect, segment, and classify any defects. We emphasize the robustness of the algorithm against recording artefacts. Furthermore, this method is applied in 24 h/7 day real-time industrial surface inspection system.

Publisher note

To access the full article, please see PDF.

Authors’ Affiliations

(1)
Fraunhofer-Institut für Integrierte Schaltungen IIS
(2)
GSM, Institut Fresnel, CNRS-UMR 6133, École Centrale Marseille, Université Aix-Marseille III

Copyright

© Yannick Caulier et al. 2008

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.