| Presentation | 2015-03-19 A preliminary study on recognition of moving directions of escalators for the visually impaired by use of optical flow Daiki NAKAMURA, Hotaka TAKIZAWA, Mayumi AOYAGI, Nobuo EZAKI, Shinji MIZUNO, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(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) |
| Keyword(in English) | The visually impaired / Escalator / Optical flow / Homography / Registration |
| Paper # | BioX2014-57,PRMU2014-177 |
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| Conference Information | |
| Committee | PRMU |
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| Conference Date | 2015/3/12(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Pattern Recognition and Media Understanding (PRMU) |
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| Language | JPN |
| 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 |
| 1st Author's Name | Daiki NAKAMURA |
| 1st Author's Affiliation | University of Tsukuba() |
| 2nd Author's Name | Hotaka TAKIZAWA |
| 2nd Author's Affiliation | University of Tsukuba |
| 3rd Author's Name | Mayumi AOYAGI |
| 3rd Author's Affiliation | Aichi University of Education |
| 4th Author's Name | Nobuo EZAKI |
| 4th Author's Affiliation | Toba National College of Maritime Technology |
| 5th Author's Name | Shinji MIZUNO |
| 5th Author's Affiliation | Aichi Institute of Technology |
| Date | 2015-03-19 |
| Paper # | BioX2014-57,PRMU2014-177 |
| Volume (vol) | vol.114 |
| Number (no) | 521 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |