Measuring Gait Using a Ground Laser Range Sensor
Open Access
- 16 November 2009
- Vol. 9 (11), 9133-9146
- https://doi.org/10.3390/s91109133
Abstract
This paper describes a measurement system designed to register the displacement of the legs using a two-dimensional laser range sensor with a scanning plane parallel to the ground and extract gait parameters. In the proposed methodology, the position of the legs is estimated by fitting two circles with the laser points that define their contour and the gait parameters are extracted applying a step-line model to the estimated displacement of the legs to reduce uncertainty in the determination of the stand and swing phase of the gait. Results obtained in a range up to 8 m shows that the systematic error in the location of one static leg is lower than 10 mm with and standard deviation lower than 8 mm; this deviation increases to 11 mm in the case of a moving leg. The proposed measurement system has been applied to estimate the gait parameters of six volunteers in a preliminary walking experiment.Keywords
This publication has 19 references indexed in Scilit:
- Curvature-Based Environment Description for Robot Navigation Using Laser Range SensorsSensors, 2009
- Using a LIDAR Vegetation Model to Predict UHF SAR Attenuation in Coniferous ForestsSensors, 2009
- Gait Analysis Using a Shoe-Integrated Wireless Sensor SystemIEEE Transactions on Information Technology in Biomedicine, 2008
- People Identification Using Gait Via Floor Pressure Sensing and AnalysisLecture Notes in Computer Science, 2008
- Real-Time Tree-Foliage Surface Estimation Using a Ground Laser ScannerIEEE Transactions on Instrumentation and Measurement, 2007
- Least-squares orthogonal distances fitting of circle, sphere, ellipse, hyperbola, and parabolaPattern Recognition, 2001
- Gait variability and fall risk in community-living older adults: A 1-year prospective studyArchives of Physical Medicine and Rehabilitation, 2001
- Body Size, Adaptation and FunctionHuman Organization, 1989
- Recognizing the sex of a walker from a dynamic point-light displayPerception & Psychophysics, 1977
- Recognizing friends by their walk: Gait perception without familiarity cuesBulletin of the Psychonomic Society, 1977