Regular research article
28 Sep 2018
Regular research article | 28 Sep 2018
Modeling the unified measurement uncertainty of deflectometric and plenoptic 3-D sensors
Mathias Ziebarth1, Niclas Zeller2, Michael Heizmann3, and Franz Quint2
Mathias Ziebarth et al.
Mathias Ziebarth1, Niclas Zeller2, Michael Heizmann3, and Franz Quint2
- 1Vision and Fusion Laboratory, Karlsruhe Institute of Technology, Karlsruhe, Germany
- 2Faculty of Electrical Engineering and Information Technology, Karlsruhe University of Applied Sciences, Karlsruhe, Germany
- 3Institut für Industrielle Informationstechnik, Karlsruhe Institute of Technology, Karlsruhe, Germany
- 1Vision and Fusion Laboratory, Karlsruhe Institute of Technology, Karlsruhe, Germany
- 2Faculty of Electrical Engineering and Information Technology, Karlsruhe University of Applied Sciences, Karlsruhe, Germany
- 3Institut für Industrielle Informationstechnik, Karlsruhe Institute of Technology, Karlsruhe, Germany
Correspondence: Mathias Ziebarth (mathias.ziebarth@kit.edu)
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Received: 13 Oct 2017 – Revised: 23 Aug 2018 – Accepted: 05 Sep 2018 – Published: 28 Sep 2018
In this paper we propose new models of two complementary optical sensors to obtain 2.5-D measurements of opaque surfaces: a deflectometric and a plenoptic sensor. The deflectometric sensor uses active triangulation and works best on specular surfaces, while the plenoptic sensor uses passive triangulation and works best on textured, diffusely reflecting surfaces. We propose models to describe the measurement uncertainties of the sensors for specularly to diffusely reflecting surfaces under consideration of typical disturbances like ambient light or vibration. The predicted measurement uncertainties of both sensors can be used to obtain optimized measurements uncertainties for varying surface properties on the basis of a combined sensor system. The models are validated exemplarily based on real measurements.
