B#: chord-based correction for multitouch braille input

Hugo Nicolau, Kyle Montague, Tiago Guerreiro, João Guerreiro, Vicki L. Hanson

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    15 Citations (Scopus)

    Abstract

    Braille has paved its way into mobile touchscreen devices, providing faster text input for blind people. This advantage comes at the cost of accuracy, as chord typing over a flat surface has proven to be highly error prone. A misplaced finger on the screen translates into a different or unrecognized character. However, the chord itself gathers information that can be leveraged to improve input performance. We present B#, a novel correction system for multitouch Braille input that uses chords as the atomic unit of information rather than characters. Experimental results on data collected from 11 blind people revealed that B# is effective in correcting errors at character-level, thus providing opportunities for instant corrections of unrecognized chords; and at word-level, where it outperforms a popular spellchecker by providing correct suggestions for 72% of incorrect words (against 38%). We finish with implications for designing chord-based correction system and avenues for future work.
    Original languageEnglish
    Title of host publicationCHI '14
    Subtitle of host publicationProceedings of the SIGCHI Conference on Human Factors in Computing Systems
    Place of PublicationNew York
    PublisherAssociation for Computing Machinery
    Pages1705-1708
    Number of pages4
    ISBN (Print)9781450324731
    DOIs
    Publication statusPublished - 2014
    Event32nd Annual ACM CHI Conference on Human Factors in Computing Systems - Metro Toronto Convention Centre, Toronto, Canada
    Duration: 26 Apr 20141 May 2014
    http://chi2014.acm.org/

    Conference

    Conference32nd Annual ACM CHI Conference on Human Factors in Computing Systems
    Abbreviated titleCHI 2014
    CountryCanada
    CityToronto
    Period26/04/141/05/14
    Internet address

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  • Research Output

    • 15 Citations
    • 1 Paper

    B#: chord-based correction for multitouch braille input

    Nicolau, H., Montague, K., Guerreiro, T., Guerreiro, J. & Hanson, V. L., 29 Apr 2014.

    Research output: Contribution to conferencePaper

    Activities

    • 2 Participation in conference

    32nd Annual ACM CHI Conference on Human Factors in Computing Systems

    Kyle Montague (Participant)

    29 Apr 2014

    Activity: Participating in or organising an event typesParticipation in conference

    32nd Annual ACM CHI Conference on Human Factors in Computing Systems

    Vicki L. Hanson (Member of programme committee)

    29 Apr 2014

    Activity: Participating in or organising an event typesParticipation in conference

    Cite this

    Nicolau, H., Montague, K., Guerreiro, T., Guerreiro, J., & Hanson, V. L. (2014). B#: chord-based correction for multitouch braille input. In CHI '14 : Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (pp. 1705-1708). Association for Computing Machinery. https://doi.org/10.1145/2556288.2557269