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Influence of the measurement object's reflective properties on the accuracy of array projection-based 3D sensors

: Heist, S.; Kühmstedt, P.; Notni, G.


Harding, K.G. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Dimensional Optical Metrology and Inspection for Practical Applications VI : 13 April 2017, Anaheim, California, United States
Bellingham, WA: SPIE, 2017 (Proceedings of SPIE 10220)
ISBN: 978-1-5106-0941-9
ISBN: 978-1-5106-0942-6
Paper 1022008
Conference "Dimensional Optical Metrology and Inspection for Practical Applications" <6, 2017, Anaheim/Calif.>
Conference Paper
Fraunhofer IOF ()

In order to increase the measurement speed of pattern projection-based three-dimensional (3-D) sensors, in 2014, we introduced the so-called array projector which allows pattern projection at several 1,000 fps. As the patterns are switched by switching on and off the light sources of multiple slide projectors, each pattern originates from a different projection center. This may lead to a 3-D point deviation when measuring glossy objects. In this contribution, we theoretically and experimentally investigate the dependence of this deviation on the measurement object's reflective properties. Furthermore, we propose a procedure for compensating for this deviation.