Autonomous gait event detection with portable single-camera gait kinematics analysis system

Research output: Contribution to journalArticle

Laboratory-based non-wearable motion analysis systems have significantly advanced with robust objective measurement of the limb motion, resulting in quantified, standardized and reliable outcome measures compared with traditional, semi-subjective, observational gait analysis. However, the requirement for large laboratory space and operational expertise makes these system impractical for gait analysis at local clinics and homes. In this paper, we focus on autonomous gait event detection with our bespoke, relatively inexpensive, and portable, single-camera gait kinematics analysis system. Our proposed system includes video acquisition with camera calibration, Kalman-filter+StructuralSimilarity-based marker tracking, autonomous knee angle calculation, video-frame-identification-based autonomous gait event detection, and result visualization. The only operational effort required is the marker-template selection for tracking initialization, aided by an easy to use graphic user interface. The knee angle validation on 10 stroke patients and 5 healthy volunteers against a gold standard optical motion analysis system indicates very good agreement. The autonomous gait event detection shows high detection rates for all gait events. Experimental results demonstrate that the proposed system can automatically measure the knee angle and detect gait events with good accuracy, and thus offer an alternative, cost effective and convenient solution for clinical gait kinematics analysis.
Original languageEnglish
Article number5036857
Number of pages8
JournalJournal of Sensors
Volume2016
DOIs
StateAccepted/In press - 9 Dec 2015

    Research areas

  • motion analysis system, video analytics, gait analysis
  1. Kinematics analysis multimedia system for rehabilitation

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

  2. Multiple marker tracking in a single-camera system for gait analysis

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