LineChaser: A Smartphone-Based Navigation System for Blind People to Stand in Line
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Standing in line is one of the most common social behaviors in public spaces but can be challenging for blind people. We propose an assistive system named LineChaser, which navigates a blind user to the end of a line and continuously reports the distance and direction to the last person in the line so that they can be followed. LineChaser uses the RGB camera in a smartphone to detect nearby pedestrians, and the built-in infrared depth sensor to estimate their position. Via pedestrian position estimations, LineChaser determines whether nearby pedestrians are standing in line, and uses audio and vibration signals to notify the user when they should start/stop moving forward. In this way, users can stay correctly positioned while maintaining social distance. We have conducted a usability study with 12 blind participants. LineChaser allowed blind participants to successfully navigate lines, significantly increasing their confidence in standing in lines.
Masaki Kuribayashi*, Seita Kayukawa*, Hironobu Takagi, Chieko Asakawa, and Shigeo Morishima (* - equal contribution). 2021. LineChaser: A Smartphone-Based Navigation System for Blind People to Stand in Line. In Proceedings of the 2021 CHI Conference on Human Factors in Computing Systems (CHI 2021).
栗林雅希*, 粥川青汰*, 髙木啓伸, 浅川智恵子, 森島繁生 (* - equal contribution). LineChaser: 視覚障碍者が列に並ぶためのスマートフォン型支援システム. インタラクティブシステムとソフトウェアに関するワークショップ (WISS). 2020. (査読あり, 口頭発表)
(* - equal contribution)
IBM Research Blog. New smartphone app to navigate blind people to stand in lines with distances. 2021/5/7.
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CNET Japan. 視覚障がい者もソーシャルディスタンスを保って列に並べる--IBMが支援アプリを開発. 2021/5/11.
MY BRAND BOOK. IBM's brings LineChaser app to help visually disabled users stand in socially distanced lines. 2021/5/12.
NEWS18. IBM Unveils LineChaser App to Help Visually Impaired Users Maintain Distance Amid COVID Pandemic. 2021/5/11.
Global Accessibility News. IBM Researchers Develop Smartphone App to Enable Social Distancing. 2021/5/11.
Regard News. LineChaser will adjust social distance for visually impaired. 2021/5/11.
Timesdel. IBM Unveils LineChaser App to Assist Visually Impaired Customers Preserve Distance Amid COVID Pandemic. 2021/5/11.
DonanımHaber. LineChaser görme engelliler için sosyal mesafeyi ayarlayacak . 2021/5/11.
HT TECH. IBM's latest app helps visually impaired users stand in socially distanced lines. 2021/5/10.
SLASH GEAR. Smartphone app helps blind people stand in socially distanced lines. 2021/5/10.
HDVLOG.it In coda e distanziati: app per smartphone aiuta i non vedenti. 2021/5/10.
人工智能_比特网 助力视障人士排队时保持社交距离 IBM研发LineChaser应用. 2021/5/11.
新浪首页. IBM研发LineChaser应用 帮助盲人在排队时与他人保持距离. 2021/5/10.
ITmedia NEWS. 視覚障害者が街の行列に並べる支援技術 早大とIBMなどが開発. 2020/7/7.
We would like to thank all participants who took part in our user study. We would also thank João Guerreiro, Asuka Hirata, and Yoshiki Kubotani for their support. This work was supported by JST-Mirai Program (JPMJMI19B2), JSPS KAKENHI (JP20J23018), and Grant-in-Aid for Young Scientists (Early Bird, Waseda Research Institute for Science and Engineering, BD070Z003100).