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Hands-free reading Braille with a vibrotactile wristband

Schätzle, Simon and Weber, Bernhard and Leichtmann, Benedikt (2017) Hands-free reading Braille with a vibrotactile wristband. In: Proceedings of the IADIS International Conference Interfaces and Human Computer Interaction 2017, Part of the IADIS Multi Conference on Computer Science and Information Systems 2011, MCCSIS 2017, pp. 35-45. 11th International Conference Interfaces and Human Computer Interaction, 21.-23. July 2017, Lisbon, Portugal. ISBN 978-989-8533-64-7

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Abstract

In this paper, a new approach to display Braille is presented. Braille dots are mapped to six tactors of a vibrotactile wristband. The dot patterns of characters are displayed with adequate vibrotactile stimuli generated by the tactors. Compared to the conventional way of reading Braille, the advantage of the proposed approach is that there is no need to commit a hand to active Braille dot scanning and thus, the hand is still free for other activities or tasks. In a user study, different methods of mapping Braille to the wristband with respect to the assignment of cell dots to tactors as well as temporal aspects were evaluated using objective performance data and subjective ratings. Even with little training, promising results were obtained. Sequential mapping methods performed better than parallel methods and characters could be correctly recognized in up to 97% of cases.

Item URL in elib:https://elib.dlr.de/113416/
Document Type:Conference or Workshop Item (Speech)
Title:Hands-free reading Braille with a vibrotactile wristband
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Schätzle, SimonSimon.Schaetzle (at) dlr.deUNSPECIFIED
Weber, BernhardBernhard.Weber (at) dlr.deUNSPECIFIED
Leichtmann, BenediktUniversität der Bundeswehr München, Human Factors InstituteUNSPECIFIED
Date:July 2017
Journal or Publication Title:Proceedings of the IADIS International Conference Interfaces and Human Computer Interaction 2017, Part of the IADIS Multi Conference on Computer Science and Information Systems 2011, MCCSIS 2017
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 35-45
ISBN:978-989-8533-64-7
Status:Published
Keywords:Vibrotactile Feedback, Braille, Assistive Technology for Blind People
Event Title:11th International Conference Interfaces and Human Computer Interaction
Event Location:Lisbon, Portugal
Event Type:international Conference
Event Dates:21.-23. July 2017
Organizer:iadis
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Technik für Raumfahrtsysteme
DLR - Research theme (Project):R - Vorhaben Weiterentwicklung Robotik - Mechatronik und Dynamik
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Robotics and Mechatronics (since 2013) > Mechatronic Components and Systems
Deposited By: Schätzle, Simon
Deposited On:31 Jul 2017 17:31
Last Modified:31 Jul 2019 20:11

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