Implementation of sequence-based classification methods for motion assessment and recognition in a traditional Chinese sport (Baduanjin)

Li, Hai and Khoo, Selina Phaik Lin and Yap, Hwa Jen (2022) Implementation of sequence-based classification methods for motion assessment and recognition in a traditional Chinese sport (Baduanjin). International Journal of Environmental Research and Public Health, 19 (3). ISSN 1660-4601, DOI

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This study aimed to assess the motion accuracy of Baduanjin and recognise the motions of Baduanjin based on sequence-based methods. Motion data of Baduanjin were measured by the inertial sensor measurement system (IMU). Fifty-four participants were recruited to capture motion data. Based on the motion data, various sequence-based methods, namely dynamic time warping (DTW) combined with classifiers, hidden Markov model (HMM), and recurrent neural networks (RNNs), were applied to assess motion accuracy and recognise the motions of Baduanjin. To assess motion accuracy, the scores for motion accuracies from teachers were used as the standard to train the models on the different sequence-based methods. The effectiveness of Baduanjin motion recognition with different sequence-based methods was verified. Among the methods, DTW + k-NN had the highest average accuracy (83.03%) and shortest average processing time (3.810 s) during assessing. In terms of motion reorganisation, three methods (DTW + k-NN, DTW + SVM, and HMM) had the highest accuracies (over 99%), which were not significantly different from each other. However, the processing time of DTW + k-NN was the shortest (3.823 s) compared to the other two methods. The results show that the motions of Baduanjin could be recognised, and the accuracy can be assessed through an appropriate sequence-based method with the motion data captured by IMU.

Item Type: Article
Funders: Neijiang Normal University [YLZY201912-11], University of Malaya Impact Oriented Interdisciplinary Research Grant Programmer, IIRG [IIRG001A-19IISS]
Uncontrolled Keywords: Inertial sensor measurement systems; Motion accuracy; Motion recognition; Baduanjin
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
G Geography. Anthropology. Recreation > GF Human ecology. Anthropogeography
R Medicine > RA Public aspects of medicine > RA0421 Public health. Hygiene. Preventive Medicine
Divisions: Faculty of Engineering > Department of Mechanical Engineering
Faculty of Sports and Exercise Science (formerly known as Centre for Sports & Exercise Sciences)
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 17 Aug 2022 04:56
Last Modified: 17 Aug 2022 04:56

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