Are action sport cameras accurate enough for 3D motion analysis? : a comparison with a commercial motion capture system
Deutscher übersetzter Titel: | Sind Actioncams genau genug für eine 3D-Bewegungsanalyse? : ein Vergleich mit einem kommerziellen Bewegungserfassungssystem |
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Autor: | Ramos Dalla Bernardina, Gustavo; Monnet, Tony; Teixeira Pinto, Heber; Machado Leite de Barros, Ricardo; Cerveri, Pietro; Piaia Silvatti, Amanda |
Erschienen in: | Journal of applied biomechanics |
Veröffentlicht: | 35 (2019), 1, S. 80-86, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Elektronische Ressource (online) Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 1065-8483, 1543-2688 |
DOI: | 10.1123/jab.2017-0101 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201906004143 |
Quelle: | BISp |
Abstract des Autors
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 (<2.5°; P > .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.