Assessment of error levels across the domain of a three-dimensional underwater motion capture methodology
Assessment of error levels across the domain of a three-dimensional underwater motion capture methodology
Assessing human movement underwater presents many challenges, and it is therefore important to understand error across the whole capture domain to ensure accuracy in resulting kinematics. This study assessed the accuracy across the capture domain of a submerged motion capture methodology. Six Qualisys cameras created an underwater capture volume of 8x2x2m. Average error levels across the domain were acceptable in two uncertainty trials (1.23mm and 1.34mm), but error increased at the ends and top of the domain. By selecting an area of interest for assessment that excluded areas with lower accuracy, error was reduced to 0.53mm. This study highlights the need to investigate error levels across a motion capture domain, particularly when this is a large volume, to ensure results obtained from investigations are reliable.
data acquisition, accuracy, domain error, submerged
703-706
Thompson, Isobel M.
e728d2cf-275b-4ee4-9663-d3e9654a9c33
Banks, Joseph
3e915107-6d17-4097-8e77-99c40c8c053d
Hudson, Dominic
3814e08b-1993-4e78-b5a4-2598c40af8e7
Warner, Martin
f4dce73d-fb87-4f71-a3f0-078123aa040c
19 July 2022
Thompson, Isobel M.
e728d2cf-275b-4ee4-9663-d3e9654a9c33
Banks, Joseph
3e915107-6d17-4097-8e77-99c40c8c053d
Hudson, Dominic
3814e08b-1993-4e78-b5a4-2598c40af8e7
Warner, Martin
f4dce73d-fb87-4f71-a3f0-078123aa040c
Thompson, Isobel M., Banks, Joseph, Hudson, Dominic and Warner, Martin
(2022)
Assessment of error levels across the domain of a three-dimensional underwater motion capture methodology.
In 40th International Society of Biomechanics in Sports Conference.
vol. 40,
NMU Commons.
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
Assessing human movement underwater presents many challenges, and it is therefore important to understand error across the whole capture domain to ensure accuracy in resulting kinematics. This study assessed the accuracy across the capture domain of a submerged motion capture methodology. Six Qualisys cameras created an underwater capture volume of 8x2x2m. Average error levels across the domain were acceptable in two uncertainty trials (1.23mm and 1.34mm), but error increased at the ends and top of the domain. By selecting an area of interest for assessment that excluded areas with lower accuracy, error was reduced to 0.53mm. This study highlights the need to investigate error levels across a motion capture domain, particularly when this is a large volume, to ensure results obtained from investigations are reliable.
Text
Assessment of Error Levels Across the Domain of a Three-Dimensional Morion Capture Methodology
- Accepted Manuscript
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Published date: 19 July 2022
Venue - Dates:
40th International Society of Biomechanics in Sports Conference, Liverpool John Moores University, Liverpool, United Kingdom, 2022-07-19 - 2024-06-23
Keywords:
data acquisition, accuracy, domain error, submerged
Identifiers
Local EPrints ID: 491180
URI: http://eprints.soton.ac.uk/id/eprint/491180
PURE UUID: 41c82b72-228a-4ce5-afc8-1e8a38eb57e9
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Date deposited: 14 Jun 2024 16:40
Last modified: 13 Dec 2024 03:07
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Author:
Isobel M. Thompson
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