Development of Finger Braille Recognition System
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- MATSUDA Yasuhiro
- Faculty of Creative Engineering, Kanagawa Institute of Technology
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- SAKUMA Ichiro
- Graduate School of Engineering, The University of Tokyo
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- JIMBO Yasuhiko
- Graduate School of Frontier Sciences, The University of Tokyo
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- KOBAYASHI Etsuko
- Graduate School of Engineering, The University of Tokyo
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- ARAFUNE Tatsuhiko
- National Institute of Advanced Industrial Science and Technology
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- ISOMURA Tsuneshi
- Faculty of Creative Engineering, Kanagawa Institute of Technology
Abstract
Finger Braille is one of the communication media of deafblind people. In one-handed Finger Braille, a sender dots the left part of the Braille code on the distal interphalangeal (DIP) joints of the index, middle and ring fingers of a receiver, and subsequently dots the right part of the Braille code on the proximal interphalangeal (PIP) joints of the same fingers. Because there is a small number of non-disabled people who are skilled in Finger Braille, deafblind people communicate in this medium only through an interpreter. In this study, we developed a Finger Braille recognition system using small piezoelectric accelerometers worn by the receiver. We first conducted a measurement experiment to derive algorithms for the recognition of the dotted fingers and positions. The results showed that the accuracy of the recognition of dotted fingers was 92.9%, and the recognition system was independent of the dotted strength, dotted position and receiver. The accuracy of the recognition of dotted positions was 81.9%, and the recognition system could recognize dotted positions if the receiver's hand formed a natural longitudinal arch on the desk. Next, an evaluation experiment was carried out. The results showed that the accuracy of the recognition of dotted fingers by dotting was 89.7%, and the accuracy of recognition of dotted positions by dotting was 92.3%. Therefore, the recognition system could recognize sentences accurately when the interpreter dotted clearly.
Journal
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- Journal of Biomechanical Science and Engineering
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Journal of Biomechanical Science and Engineering 5 (1), 54-65, 2010
The Japan Society of Mechanical Engineers
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Keywords
Details 詳細情報について
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- CRID
- 1390282680238127744
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- NII Article ID
- 130000252204
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- ISSN
- 18809863
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- Text Lang
- en
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed