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Publication
Comparison of the accuracy of a free 3D camera system with the Ariel performance system
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Advisor(s)
Abstract(s)
The aims were: (1) to determine the accuracy and time-consuming of the automatic digitalization feature
of 3D motion analysis systems; and (2) to determine the reliability of the 3D position when a football
player performed a hard kick with spin. Four high-speed cameras (Casio ZR200 (512x384)) with a 240 Hz
field rate were used. Automatic scanning of the Kinovea® and APAS® software was used. The accuracy was
determined through mean absolute error, maximum absolute error, mean standard deviation of absolute
error, and the variability values. The reliability was calculated with the Intra-Class Correlation. The mean
absolute error (3.62 to 3.78 mm), maximum absolute error (9.09 to 11.61 mm), mean standard deviation of
absolute error (0.01 to 0.59 mm), variability values (<1 mm), and the auto-digitalization time (16 to
31 minutes) were calculated and were within the values obtained in the literature. The reliability was
determined with the Intra-Class Correlation, and the results were higher than 0.90, warrantied a high
consistency for chosen software. The accuracy and the reliability intra-operator were determined, and the
results indicated that it is possible to apply the free 3D camera system, with consistency in free-kick
analysis.
Description
Keywords
biomechanics accuracy reliability and motion analysis system
Citation
Miranda-Oliveira,P.; Branco, M.; Fernandes O. J. & Santos-Rocha.R. (2021) Comparison of the accuracy of a free 3D camera system with the Ariel performance system, Computer Methods in Biomechanics and Biomedical Engineering: Imaging & Visualization, DOI: 10.1080/21681163.2021.1931963
