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Authors: Robert Fischer 1 ; Michael Hödlmoser 2 and Margrit Gelautz 1

Affiliations: 1 Visual Computing and Human-Centered Technology, TU Wien, Vienna, Austria ; 2 emotion3D GmbH, Vienna, Austria

Keyword(s): Device Calibration, Structured Light Calibration, Stereo Camera.

Abstract: We introduce a novel structured light extrinsic calibration framework that emphasizes calibration flexibility while maintaining satisfactory accuracy. The proposed method facilitates extrinsic calibration by projecting circles into non-planar and dynamically changing scenes over multiple distances without relying on the structured light’s intrinsics. Our approach relies on extracting depth information using stereo-cameras. The implementation reconstructs light-rays by detecting the center of circles and reconstructing their 3D-positions using triangulation. We evaluate our method by using synthetically rendered images under relevant lighting- and scene conditions, including detection drop-out, circle-center detection error, impact of distances and impact of different scenes. Our implementation achieves a rotational accuracy of below 1 degree and a translational accuracy of approximately 1 cm. Based on our experimental results we expect our approach to be applicable for use cases in w hich more flexible extrinsic structured light calibration techniques are required, such as automotive headlight calibration. (More)

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Paper citation in several formats:
Fischer, R.; Hödlmoser, M. and Gelautz, M. (2023). Flexible Extrinsic Structured Light Calibration Using Circles. In Proceedings of the 18th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISIGRAPP 2023) - Volume 4: VISAPP; ISBN 978-989-758-634-7; ISSN 2184-4321, SciTePress, pages 47-55. DOI: 10.5220/0011614500003417

@conference{visapp23,
author={Robert Fischer. and Michael Hödlmoser. and Margrit Gelautz.},
title={Flexible Extrinsic Structured Light Calibration Using Circles},
booktitle={Proceedings of the 18th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISIGRAPP 2023) - Volume 4: VISAPP},
year={2023},
pages={47-55},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0011614500003417},
isbn={978-989-758-634-7},
issn={2184-4321},
}

TY - CONF

JO - Proceedings of the 18th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISIGRAPP 2023) - Volume 4: VISAPP
TI - Flexible Extrinsic Structured Light Calibration Using Circles
SN - 978-989-758-634-7
IS - 2184-4321
AU - Fischer, R.
AU - Hödlmoser, M.
AU - Gelautz, M.
PY - 2023
SP - 47
EP - 55
DO - 10.5220/0011614500003417
PB - SciTePress

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