Paper Abstract and Keywords |
Presentation |
2016-05-21 15:20
The influences of deterioration of reflective marker used in optical motion capture system on measurement accuracy. Masashi Oobuchi, Toyohiko Hayashi, Shigehito Tanahshi (Niigata Univ.), Hiroshi Tanaka, Hiroaki Inui, Hiroki Ninomiya, Katsuya Nobuhara (Nobuhara Hospital) MBE2016-6 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Optical motion capture system is a device to analyze the motion of bodies, such as human motion. By measuring infrared light reflective markers secured to the object by means of more than or equal to two motion cameras, we can obtain time-series data of 3-dimensional coordinates of the makers. One of the problems of this measurement is that repetitive use of the markers gradually increases measurement error due to the separation and/or corruption of a reflective material. The relationship between such marker deterioration and measurement error, however, has yet to be clarified quantitatively. Then as its basic study, we made several models of partial loss of the reflector, and investigated the relationship between each deterioration pattern and measurement error quantitatively using a set of two motion cameras mutually arranged perpendicularly. Empirical results suggested that 1) the partial loss of the reflector makes the detected position of the marker image deviate, causing measurement error, and 2) there is a possibility that the measurement error could be estimated from the shape, area and position of the partial loss image. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Infrared light reflective marker / Optical motion capture system / Marker deterioration / Measurement accuracy / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 116, no. 58, MBE2016-6, pp. 29-34, May 2016. |
Paper # |
MBE2016-6 |
Date of Issue |
2016-05-14 (MBE) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
Download PDF |
MBE2016-6 |
|