Articles | Volume 7, issue 2
https://doi.org/10.5194/jsss-7-517-2018
https://doi.org/10.5194/jsss-7-517-2018
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 Ziebarth, Niclas Zeller, Michael Heizmann, and Franz Quint

Abstract. 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.

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Short summary
We propose a measurement uncertainty model of two complementary optical sensors: 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. The predicted uncertainties can be used to obtain optimized measurements for varying surface properties. The models are validated exemplarily based on real measurements.