Dent detection method by high gradation photometric stereo

Akihisa Hasebe; Kunihito Kato; Hideki Tanahashi; Naoki Kubota

doi:10.1117/12.2266631

14 May 2017 Dent detection method by high gradation photometric stereo

Akihisa Hasebe, Kunihito Kato, Hideki Tanahashi, Naoki Kubota

Proceedings Volume 10338, Thirteenth International Conference on Quality Control by Artificial Vision 2017; 103380P (2017) https://doi.org/10.1117/12.2266631
Event: The International Conference on Quality Control by Artificial Vision 2017, 2017, Tokyo, Japan

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.

Citation Download Citation

Akihisa Hasebe, Kunihito Kato, Hideki Tanahashi, and Naoki Kubota "Dent detection method by high gradation photometric stereo", Proc. SPIE 10338, Thirteenth International Conference on Quality Control by Artificial Vision 2017, 103380P (14 May 2017); https://doi.org/10.1117/12.2266631

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