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| Presentation | 2015-03-19 16:40 A preliminary study on recognition of moving directions of escalators for the visually impaired by use of optical flow Daiki Nakamura, Hotaka Takizawa (Univ. of Tsukuba), Mayumi Aoyagi (Aichi Univ. of Edu.), Nobuo Ezaki (Toba National coll. of Maritime Tech.), Shinji Mizuno (Aichi Inst. of Tech.)  BioX2014-57 PRMU2014-177 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | It is difficult for a visually impaired individual to recognize the moving directions of escalators at their entrance. If the individual rides on the escalator of the wrong direction, he or she will stumble its step or collide with other passengers. This report proposes a method of issuing a warning sound before a visually impaired individual rides a wrong escalator. First, points of interest are extracted form video frames captured by a camera by using a corner detection operator. Then, a homography matrix between successive two frames is estimated by using RANSAC and then the two frames are registered. Finally, the moving direction of an escalator is determined form the optical flow on the points of interest. The proposed method is implemented on an Android smartphone and a desktop PC, and experimental results are shown. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | The Visually Impaired / Escalator / Optical flow / Homography / Registration / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 114, no. 521, PRMU2014-177, pp. 111-116, March 2015. | |
| Paper # | PRMU2014-177 | |
| Date of Issue | 2015-03-12 (BioX, PRMU) | |
| 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 | BioX2014-57 PRMU2014-177 |
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| Conference Information | |
| Committee | PRMU BioX |
| Conference Date | 2015-03-19 - 2015-03-20 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | PRMU |
| Conference Code | 2015-03-PRMU-BioX |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A preliminary study on recognition of moving directions of escalators for the visually impaired by use of optical flow |
| Sub Title (in English) | |
| Keyword(1) | The Visually Impaired |
| Keyword(2) | Escalator |
| Keyword(3) | Optical flow |
| Keyword(4) | Homography |
| Keyword(5) | Registration |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Daiki Nakamura |
| 1st Author's Affiliation | University of Tsukuba (Univ. of Tsukuba) |
| 2nd Author's Name | Hotaka Takizawa |
| 2nd Author's Affiliation | University of Tsukuba (Univ. of Tsukuba) |
| 3rd Author's Name | Mayumi Aoyagi |
| 3rd Author's Affiliation | Aichi University of Education (Aichi Univ. of Edu.) |
| 4th Author's Name | Nobuo Ezaki |
| 4th Author's Affiliation | Toba National College of Maritime Technology (Toba National coll. of Maritime Tech.) |
| 5th Author's Name | Shinji Mizuno |
| 5th Author's Affiliation | Aichi Institute of Technology (Aichi Inst. of Tech.) |
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| Speaker | Author-1 |
| Date Time | 2015-03-19 16:40:00 |
| Presentation Time | 30 minutes |
| Registration for | PRMU |
| Paper # | BioX2014-57, PRMU2014-177 |
| Volume (vol) | vol.114 |
| Number (no) | no.520(BioX), no.521(PRMU) |
| Page | pp.111-116 |
| #Pages | 6 |
| Date of Issue | 2015-03-12 (BioX, PRMU) |
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