The Journal of Korean Physical Therapy

  • 제27권4호
  • /
  • Pages.214-220
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  • 2015
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  • 1229-0475(pISSN)
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  • 2287-156X(eISSN)
대한물리치료학회 (The Korean Society of Physical Therapy)
권호 표지

Motion Recognition for Kinect Sensor Data Using Machine Learning Algorithm with PNF Patterns of Upper Extremities

  • Kim, Sangbin (Department of Physical Therapy, College of Health Science, Korea University, Department of Computer and Radio Communications Engineering (Computer Science and Engineering)) ;
  • Kim, Giwon (Department of Physical Therapy, College of Health Science, Korea University, Research Institute of Health Sciences, Korea University) ;
  • Kim, Junesun (Department of Physical Therapy, College of Health Science, Korea University, Korea University, Research Institute of Health Sciences, Korea University, Department of Public Health Sciences, Graduate School, Korea University)
  • 투고 : 2015.07.23
  • 심사 : 2015.08.20
  • 발행 : 2015.08.25
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초록

Purpose: The purpose of this study was to investigate the availability of software for rehabilitation with the Kinect sensor by presenting an efficient algorithm based on machine learning when classifying the motion data of the PNF pattern if the subjects were wearing a patient gown. Methods: The motion data of the PNF pattern for upper extremities were collected by Kinect sensor. The data were obtained from 8 normal university students without the limitation of upper extremities. The subjects, wearing a T-shirt, performed the PNF patterns, D1 and D2 flexion, extensions, 30 times; the same protocol was repeated while wearing a patient gown to compare the classification performance of algorithms. For comparison of performance, we chose four algorithms, Naive Bayes Classifier, C4.5, Multilayer Perceptron, and Hidden Markov Model. The motion data for wearing a T-shirt were used for the training set, and 10 fold cross-validation test was performed. The motion data for wearing a gown were used for the test set. Results: The results showed that all of the algorithms performed well with 10 fold cross-validation test. However, when classifying the data with a hospital gown, Hidden Markov model (HMM) was the best algorithm for classifying the motion of PNF. Conclusion: We showed that HMM is the most efficient algorithm that could handle the sequence data related to time. Thus, we suggested that the algorithm which considered the sequence of motion, such as HMM, would be selected when developing software for rehabilitation which required determining the correctness of the motion.

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참고문헌

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