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Are Action Sport Cameras Accurate Enough for 3D Motion Analysis? A Comparison With a Commercial Motion Capture System
- Source :
- Journal of Applied Biomechanics, Journal of Applied Biomechanics, Human Kinetics, 2019, 35 (1), pp.80-86. ⟨10.1123/jab.2017-0101⟩
- Publication Year :
- 2019
- Publisher :
- HAL CCSD, 2019.
-
Abstract
- International audience; The aim of this study was to assess the precision and accuracy of an action sport camera (ASC) system (4 GoPro Hero3+ Black) by comparison with a commercial motion capture (MOCAP) system (4 ViconMX40). Both systems were calibrated using the MOCAP protocol and the 3-dimensional (3D) markers coordinates of a T-shaped tool were reconstructed, concurrently. The 3D precision was evaluated by the differences in the reconstructed position using a Bland–Altman test, while accuracy was assessed by a rigid bar test (Wilcoxon rank sum). To examine the accuracy of the action sport camera with respect to the knee flexion angles, a jump and gait task were also examined using 1 subject (Wilcoxon rank sum). The ASC system provided a maximum error of 2.47 mm, about 10 times higher than the MOCAP (0.21 mm). The reconstructed knee flexion angles were highly correlated (r2 > .99) and showed no significant differences between systems ( .05). As expected, the MOCAP obtained better 3D precision and accuracy. However, the authors show such differences have little practical effect on reconstructed 3D kinematics.
- Subjects :
- Accuracy and precision
Wilcoxon signed-rank test
[PHYS.MPHY]Physics [physics]/Mathematical Physics [math-ph]
Biophysics
Motion capture
[SPI.AUTO]Engineering Sciences [physics]/Automatic
03 medical and health sciences
0302 clinical medicine
Gait (human)
[PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph]
Position (vector)
Orthopedics and Sports Medicine
Computer vision
[PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph]
[PHYS.MECA.BIOM]Physics [physics]/Mechanics [physics]/Biomechanics [physics.med-ph]
Mathematics
[SPI.ACOU]Engineering Sciences [physics]/Acoustics [physics.class-ph]
[PHYS.MECA.VIBR]Physics [physics]/Mechanics [physics]/Vibrations [physics.class-ph]
3d motion analysis
business.industry
[SPI.FLUID]Engineering Sciences [physics]/Reactive fluid environment
Rehabilitation
[SPI.NRJ]Engineering Sciences [physics]/Electric power
030229 sport sciences
[CHIM.MATE]Chemical Sciences/Material chemistry
[PHYS.MECA.MSMECA]Physics [physics]/Mechanics [physics]/Materials and structures in mechanics [physics.class-ph]
Action (physics)
[PHYS.MECA.ACOU]Physics [physics]/Mechanics [physics]/Acoustics [physics.class-ph]
[SPI.ELEC]Engineering Sciences [physics]/Electromagnetism
[CHIM.POLY]Chemical Sciences/Polymers
Jump
[PHYS.MECA.THER]Physics [physics]/Mechanics [physics]/Thermics [physics.class-ph]
Artificial intelligence
business
030217 neurology & neurosurgery
Subjects
Details
- Language :
- English
- ISSN :
- 10658483
- Database :
- OpenAIRE
- Journal :
- Journal of Applied Biomechanics, Journal of Applied Biomechanics, Human Kinetics, 2019, 35 (1), pp.80-86. ⟨10.1123/jab.2017-0101⟩
- Accession number :
- edsair.doi.dedup.....717a5e5bf6aa4b659ea16170b91004af