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| Titel: |
A mobile phone system to find crosswalks for visually impaired pedestrians |
| Auteur: |
Shen, Huiying Chan, Kee-Yip Coughlan, James Brabyn, John |
| Verschenen in: |
Technology & disability |
| Paginering: | Jaargang 20 (2008) nr. 3 pagina's 217-224 |
| Jaar: |
2008-10-22 |
| Inhoud: |
Urban intersections are the most dangerous parts of a blind or visually impaired pedestrian's travel. A prerequisite for safely crossing an intersection is entering the crosswalk in the right direction and avoiding the danger of straying outside the crosswalk. This paper presents a proof of concept system that seeks to provide such alignment information. The system consists of a standard mobile phone with built-in camera that uses computer vision algorithms to detect any crosswalk visible in the camera's field of view; audio feedback from the phone then helps the user align him/herself to it. Our prototype implementation on a Nokia mobile phone runs in about one second per image, and is intended for eventual use in a mobile phone system that will aid blind and visually impaired pedestrians in navigating traffic intersections. |
| Uitgever: |
IOS Press |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
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