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Assessment of Joint Range of Motion Measured by a Stereo Camera

Authors:
Yuta Ono
Oky Dicky Ardiansyah Prima
Takashi Imabuchi
Yoshitoshi Murata
Hisayoshi Ito
Yukihide Nishimura

Keywords: computer vision; range of motion; activities of daily living; 3D human pose estimation

Abstract:
Many studies have been conducted to measure joint Range of Motion (ROM) to approach Activities of Daily Living (ADL) assessments using nonintrusive three-dimensional (3D) sensors, such as motion capture devices and the Kinect, as alternatives to goniometer. While these sensors have been widely used to measure joint angles, the measuring range is restrictive and the complexity to setup has prevented these devices to be used as self-measurements during home-based training. With the recent progress on human pose estimation using computer vision approach, locations of joints can be detected from a vision camera in real time. This achievement opens a possibility to measure ROMs in a wide area and in any locations as long as the subject is located inside the camera’s Field of View (FOV). This study extends the current human pose estimation to capture joints in 3D using a stereo camera and compares the ROMs of shoulder and elbow derived from the proposed method with those derived from the Kinect. Measurements of ROM using both devices show good agreement indicating that the proposed method is valid to measure ROMs, as a replacement for the Kinect.

Pages: 23 to 29

Copyright: Copyright (c) IARIA, 2019

Publication date: February 24, 2019

Published in: conference

ISSN: 2308-4359

ISBN: 978-1-61208-688-0

Location: Athens, Greece

Dates: from February 24, 2019 to February 28, 2019