Assessment of Measurement Uncertainty in Optical Marker Tracking of High-Speed Motion.pdf (979.39 kB)

Assessment of measurement uncertainty in optical marker tracking of high-speed motion

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conference contribution
posted on 01.12.2020, 09:17 by Paul-Philipp Luckemann, Steph Forrester, Aimee Mears, Jonathan Shepherd, Jonathan Roberts
Optical marker tracking is used in research environments to understand the dynamics of moving objects of interest. Due to the complexity of the systems and the wide field of applications, there is no simple method to assess system accuracy. In this approach, a driver clubhead functioned as a rigid body and was tracked during the delivery phase of the golf swing. Marker tracking uncertainty was assessed by measures of inter-marker distance errors. The effect of swing speed on marker tracking uncertainty was tested in the range 0 m/s (static) to 50 m/s. Results demonstrated that the rigid body position in the capture volume has a large effect on marker tracking uncertainty. Positive correlations were found between marker tracking uncertainty and swing speed. Marker size and number of cameras used for marker reconstruction were optimised to provide mean marker tracking uncertainties around the tee position of below 0.13 mm.

Funding

EPSRC Centre for Doctoral Training in Embedded Intelligence

Engineering and Physical Sciences Research Council

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History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Proceedings

Volume

49

Issue

1

Source

13th conference of the International Sports Engineering Association

Publisher

MDPI

Version

VoR (Version of Record)

Rights holder

© The Authors

Publisher statement

This is an Open Access Article. It is published by MDPI under the Creative Commons Attribution 4.0 International Licence (CC BY 4.0). Full details of this licence are available at: https://creativecommons.org/licenses/by/4.0/

Publication date

2020-06-15

Copyright date

2020

ISSN

2504-3900

eISSN

2504-3900

Language

en

Location

Online

Event dates

22nd June 2020 - 26th June 2020

Depositor

Dr Steph Forrester. Deposit date: 18 November 2020

Article number

72