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Proceedings Paper

Dent detection method by high gradation photometric stereo
Author(s): Akihisa Hasebe; Kunihito Kato; Hideki Tanahashi; Naoki Kubota
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Paper Abstract

This paper describes an automatic detection method for small dents on a metal plate. We adopted the photometric stereo as a three-dimensional measurement method, which has advantages in terms of low cost and short measurement time. In addition, a high precision measurement system was realized by using an 18bit camera. Furthermore, the small dent on the surface of the metal plate is detected by the inner product of the measured normal vectors using photometric stereo. Finally, the effectiveness of our method was confirmed by detection experiments.

Paper Details

Date Published: 14 May 2017
PDF: 8 pages
Proc. SPIE 10338, Thirteenth International Conference on Quality Control by Artificial Vision 2017, 103380P (14 May 2017); doi: 10.1117/12.2266631
Show Author Affiliations
Akihisa Hasebe, Gifu Univ. (Japan)
Kunihito Kato, Gifu Univ. (Japan)
Hideki Tanahashi, Gifu Prefectural Research Institute of Information Technology (Japan)
Naoki Kubota, Gifu Prefectural Research Institute of Information Technology (Japan)


Published in SPIE Proceedings Vol. 10338:
Thirteenth International Conference on Quality Control by Artificial Vision 2017
Hajime Nagahara; Kazunori Umeda; Atsushi Yamashita, Editor(s)

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