Flexible Extrinsic Structured Light Calibration Using Circles

Robert Fischer, Michael Hödlmoser, Margrit Gelautz

2023

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 which more flexible extrinsic structured light calibration techniques are required, such as automotive headlight calibration.

Paper Citation

in Harvard Style

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, SciTePress, pages 47-55. DOI: 10.5220/0011614500003417

in Bibtex Style

@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},
}

in EndNote Style

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
AU - Fischer R.
AU - Hödlmoser M.
AU - Gelautz M.
PY - 2023
SP - 47
EP - 55
DO - 10.5220/0011614500003417
PB - SciTePress