期刊
HEALTHCARE TECHNOLOGY LETTERS
卷 7, 期 1, 页码 25-28出版社
INST ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/htl.2019.0015
关键词
accelerometers; gait analysis; cameras; image motion analysis; computer vision; wearable gait analysis system; wearable camera; indoor walk sequences; triaxial accelerometer; marker-based optical motion-capture system; frequency-domain gait parameters; gait-recording device; portable vision-based system; in-home gait analysis
资金
- National Institutes of Health (NIH) [1K01LM012439]
A feasibility study was conducted to investigate the use of a wearable gait analysis system for classifying gait speed using a low-cost wearable camera in a semi-structured indoor setting. Data were collected from 19 participants who wore the system during indoor walk sequences at varying self-determined speeds (slow, medium, and fast). Gait parameters using this system were compared with parameters obtained from a vest comprising of a single triaxial accelerometer and from a marker-based optical motion-capture system. Computer-vision techniques and signal processing methods were used to generate frequency-domain gait parameters from each gait-recording device, and those parameters were analysed to determine the effectiveness of the different measurement systems in discriminating gait speed. Results indicate that the authors' low-cost, portable, vision-based system can be effectively used for in-home gait analysis.
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