Infoscience

Journal article

Capturing human motion using body-fixed sensors: Outdoor measurement and clinical applications

Motion capture is mainly based on standard systems using optic, magnetic or sonic technologies. In this paper, the possibility to detect useful human motion based on new techniques using different types of body-fixed sensors is shown. In particular, a combination of accelerometers and angular rate sensors (gyroscopes) showed a promising design for a hybrid kinematic sensor measuring the 2D kinematics of a body segment. These sensors together with a portable datalogger, and using simple biomechanical models, allow capture of outdoor and long-term movements and overcome some limitations of the standard motion capture systems. Significant parameters of body motion, such as nature of motion (postural transitions, trunk rotation, sitting, standing, lying, walking, jumping) and its spatio-temporal features (velocity, displacement, angular rotation, cadence and duration) have been evaluated and compared to the camera-based system. Based on these parameters, the paper outlines the possibility to monitor physical activity and to perform gait analysis in the daily environment, and reviews several clinical investigations related to fall risk in the elderly, quality of life, orthopaedic outcome and sport performance. Taking advantage of all the potential of these body-fixed sensors should be promising for motion capture and particularly in environments not suitable for standard technology such as in any field activity. Copyright © 2004 John Wiley & Sons, Ltd.

    Keywords: Clinical studies ; Gait ; Motion capture ; Outdoor monitoring ; Posture ; Sensors ; Accelerometers ; Biomechanics ; Calibration ; Cameras ; Compasses (magnetic) ; Computer graphics ; Goniometers ; Gyroscopes ; Medical applications ; Motion compensation ; Optical sensors ; Orthopedics ; Pattern recognition ; Signal processing ; Ultrasonics ; Body-fixed sensors ; Clinical studies ; Gait ; Motion capture ; Outdoor monitoring ; Posture ; Gait analysis

    Note:

    Laboratory of Movement Analysis and Measurement, School of Engineering, Swiss Federal Institute of Technology, CH-1015 Lausanne, Switzerland

    15464261 (ISSN)

    Cited By: 3; Export Date: 14 August 2006; Source: Scopus

    DOI: 10.1002/cav.2

    Language of Original Document: English

    Correspondence Address: Aminian, K.; Laboratory of Movement Analysis and Measurement; School of Engineering; Swiss Federal Institute of Technology CH-1015 Lausanne, Switzerland; email: kamiar.aminian@epfl.ch

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    Record created on 2006-11-30, modified on 2016-08-08

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