An Evaluation of Motion Trackers with Virtual Reality Sensor Technology in Comparison to a Marker-Based Motion Capture System Based on Joint Angles for Ergonomic Risk Assessment
Autor: | Karen Insa Wolf, Peter König, Daniel Friemert, Krzysztof Izdebski, Anika Weber, Thomas Schüler, Frank Wallhoff, Jan P. Vox |
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Přispěvatelé: | Publica |
Rok vydání: | 2021 |
Předmět: |
Motion analysis
Technology ergonomic risk assessment Computer science HTC Vive TP1-1185 Kinematics Virtual reality 01 natural sciences Biochemistry Motion capture Risk Assessment Motion (physics) Article Analytical Chemistry 03 medical and health sciences Motion 0302 clinical medicine motion capture Humans Computer vision Electrical and Electronic Engineering Instrumentation Ground truth accuracy business.industry Chemical technology 010401 analytical chemistry Virtual Reality system comparison Tracking system 030229 sport sciences Atomic and Molecular Physics and Optics 0104 chemical sciences lighthouse technology Body region Artificial intelligence Ergonomics joint angles business Qualisys Oqus |
Zdroj: | Sensors (Basel, Switzerland) Sensors Volume 21 Issue 9 Sensors, Vol 21, Iss 3145, p 3145 (2021) |
ISSN: | 1424-8220 |
Popis: | The reproduction and simulation of workplaces, and the analysis of body postures during work processes, are parts of ergonomic risk assessments. A commercial virtual reality (VR) system offers the possibility to model complex work scenarios as virtual mock-ups and to evaluate their ergonomic designs by analyzing motion behavior while performing work processes. In this study a VR tracking sensor system (HTC Vive tracker) combined with an inverse kinematic model (Final IK) was compared with a marker-based optical motion capture system (Qualisys). Marker-based optical motion capture systems are considered the gold standard for motion analysis. Therefore, Qualisys was used as the ground truth in this study. The research question to be answered was how accurately the HTC Vive System combined with Final IK can measure joint angles used for ergonomic evaluation. Twenty-six subjects were observed simultaneously with both tracking systems while performing 20 defined movements. Sixteen joint angles were analyzed. Joint angle deviations between ±6∘ and ±42∘ were identified. These high deviations must be considered in ergonomic risk assessments when using a VR system. The results show that commercial low-budget tracking systems have the potential to map joint angles. Nevertheless, substantial weaknesses and inaccuracies in some body regions must be taken into account. Recommendations are provided to improve tracking accuracy and avoid systematic errors. |
Databáze: | OpenAIRE |
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