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Towards a Live Feedback Training System: Interchangeability of Orbbec Persee and Microsoft Kinect for Exercise Monitoring

1
Salzburg Research Forschungsgesellschaft mbH, Jakob Haringer Straße 5/3, 5020 Salzburg, Austria
2
Department of Sport and Exercise Science, University of Salzburg, Schlossallee 49, Rif, 5400 Hallein, Austria
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Athletes Performance Center–Red Bull Sports, 5020 Salzburg, Austria
*
Author to whom correspondence should be addressed.
Academic Editor: Hamid Reza Karimi
Designs 2021, 5(2), 30; https://doi.org/10.3390/designs5020030
Received: 20 February 2021 / Revised: 8 April 2021 / Accepted: 9 April 2021 / Published: 15 April 2021
Many existing motion sensing applications in research, entertainment and exercise monitoring are based on the Microsoft Kinect and its skeleton tracking functionality. With the Kinect’s development and production halted, researchers and system designers are in need of a suitable replacement. We investigated the interchangeability of the discontinued Kinect v2 and the all-in-one, image-based motion tracking system Orbbec Persee for the use in an exercise monitoring system prototype called ILSE. Nine functional training exercises were performed by six healthy subjects in front of both systems simultaneously. Comparing the systems’ internal tracking states from ’not tracked’ to ‘tracked’ showed that the Persee system is more confident during motion sequences, while the Kinect is more confident for hip and trunk joint positions. Assessing the skeleton tracking robustness, the Persee’s tracking of body segment lengths was more consistent. Furthermore, we used both skeleton datasets as input for the ILSE exercise monitoring including posture recognition and repetition-counting. Persee data from exercises with lateral movement and in uncovered full-body frontal view provided the same results as Kinect data. The Persee further preferred tracking of quasi-static lower limb motions and tight-fitting clothes. With these limitations in mind, we find that the Orbbec Persee is a suitable replacement for the Microsoft Kinect for motion sensing within the ILSE exercise monitoring system. View Full-Text
Keywords: exercise monitoring; live feedback; skeleton tracking exercise monitoring; live feedback; skeleton tracking
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MDPI and ACS Style

Venek, V.; Kremser, W.; Stöggl, T. Towards a Live Feedback Training System: Interchangeability of Orbbec Persee and Microsoft Kinect for Exercise Monitoring. Designs 2021, 5, 30. https://0-doi-org.brum.beds.ac.uk/10.3390/designs5020030

AMA Style

Venek V, Kremser W, Stöggl T. Towards a Live Feedback Training System: Interchangeability of Orbbec Persee and Microsoft Kinect for Exercise Monitoring. Designs. 2021; 5(2):30. https://0-doi-org.brum.beds.ac.uk/10.3390/designs5020030

Chicago/Turabian Style

Venek, Verena, Wolfgang Kremser, and Thomas Stöggl. 2021. "Towards a Live Feedback Training System: Interchangeability of Orbbec Persee and Microsoft Kinect for Exercise Monitoring" Designs 5, no. 2: 30. https://0-doi-org.brum.beds.ac.uk/10.3390/designs5020030

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