Real-time characterization of aspect flaws on warped surface by artificial vision

Artificial vision is an efficient means of assuring the quality of a certain class of products. The vision system must respect the industrial constraints, in particular, the production rate. The geometrical features of flaws are pertinent information used for the acceptance of the controlled product...

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Bibliographic Details
Published in:Optical Engineering 1997-10, Vol.36 (10), p.2886-2896
Main Authors: Dumont, Christophe, Truchetet, Frederic, Aluze, Denis, Meriaudeau, Fabrice
Format: Article
Language:English
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Summary:Artificial vision is an efficient means of assuring the quality of a certain class of products. The vision system must respect the industrial constraints, in particular, the production rate. The geometrical features of flaws are pertinent information used for the acceptance of the controlled product. This article presents a real-time algorithm for the geometrical characterization of defects located on warped objects. The algorithms described enable the characterization of defects by their size and their 2-D shape. Both parameters are calculated in real time by simple reference to a look-up table. The 2-D shape is obtained by a geometrical transform and an interpolation. The efficiency of the characterization method is experimentally evaluated. ©
ISSN:0091-3286
1560-2303
DOI:10.1117/1.601501