Dimensional control of metallic objects by artificial vision: contribution to lighting condition studies

Bernard Lamalle; Sophie Kohler-Hemmerlin; Patrick Gorria; Claudine Coulot

doi:10.1117/1.602172

1 August 1999 Dimensional control of metallic objects by artificial vision: contribution to lighting condition studies

Bernard Lamalle, Sophie Kohler-Hemmerlin, Patrick Gorria, Claudine Coulot

Optical Engineering, Vol. 38, Issue 8, (August 1999). https://doi.org/10.1117/1.602172

We present an original method that enables real time automatic dimensional control of defects on metallic objects. The method is based on the theoretical and experimental study of light reflection mechanisms that can be seen as a function of the surface roughness and of the light source size. We show that it is possible to reconstruct the profile of an object from a single gray level image. An industrial application enables us to validate our results. Finally, an error computation fixes the limits of our method and enables us to better understand illumination problems.

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Bernard Lamalle, Sophie Kohler-Hemmerlin, Patrick Gorria, and Claudine Coulot "Dimensional control of metallic objects by artificial vision: contribution to lighting condition studies," Optical Engineering 38(8), (1 August 1999). https://doi.org/10.1117/1.602172

Published: 1 August 1999

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