Application of polarimetric imaging to 3D inspection of highly reflective metallic surfaces

Olivier Morel; Christophe Stolz; Patrick Gorria

doi:10.1117/12.571366

16 December 2004 Application of polarimetric imaging to 3D inspection of highly reflective metallic surfaces

Olivier Morel, Christophe Stolz, Patrick Gorria

Proceedings Volume 5606, Two- and Three-Dimensional Vision Systems for Inspection, Control, and Metrology II; (2004) https://doi.org/10.1117/12.571366
Event: Optics East, 2004, Philadelphia, Pennsylvania, United States

Abstract

In the field of industrial vision, extracting the 3D shape information of highly reflective metallic objects is still a delicate task. This paper presents a new application of "Shape from Polarization" method to specular metallic surfaces. Studying the state of polarization of the reflected light is very useful to get information on the normals of the surface. This article demonstrates how to extend the commonly used method for dielectric to metallic surfaces. Applications on shape defects detection are also discussed, and the efficiency of the system to discriminate defects on metallic objects made by stamping and polishing is presented.

Citation Download Citation

Olivier Morel, Christophe Stolz, and Patrick Gorria "Application of polarimetric imaging to 3D inspection of highly reflective metallic surfaces", Proc. SPIE 5606, Two- and Three-Dimensional Vision Systems for Inspection, Control, and Metrology II, (16 December 2004); https://doi.org/10.1117/12.571366

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