Communication aid system for users with physical impairments

Cheng Huei Yang, Pau-Choo Chung, Li Yeh Chuang, Cheng Hong Yang

研究成果: Article

2 引文 (Scopus)

摘要

For some physically-disabled persons, the conventional computer keyboard may be inappropriate as a usable communication device. They instead require an assistive tool for entering text into a computer or for word-processing for purposes of augmentative and alternative communication in their daily lives. In this study, Morse code is selected as one possible adapted access communication method for persons with impaired hand coordination and limited dexterity. Inherently, a stable switch activation rate is strictly required for the most accurate recognition of Morse code. However, because maintaining a stable switch activation rate is a challenge for many persons who are physically disabled, automatic recognition of Morse code with standardized computer programs is difficult. Therefore, a suitable adaptive automatic recognition method is needed. This study presents a least-mean-square algorithm applied to adaptive Morse code recognition. Four processes are involved in this adaptive Morse code recognition method: space recognition, tone recognition, adaptive processing, and character recognition. Statistical analyses demonstrated that the recognition rate of the proposed method resulted in an 83% improvement over alternative methods described in previous literature.

原文English
頁(從 - 到)901-910
頁數10
期刊Computers and Mathematics with Applications
43
發行號6-7
DOIs
出版狀態Published - 2002 三月 1

指紋

Morse code
Communication
Chemical activation
Person
Switches
Disabled persons
Computer keyboards
Word processing
Character recognition
Activation
Switch
Computer program listings
Least Mean Square
Character Recognition
Alternatives
Processing
Strictly

All Science Journal Classification (ASJC) codes

  • Modelling and Simulation
  • Computational Theory and Mathematics
  • Computational Mathematics

引用此文

Yang, Cheng Huei ; Chung, Pau-Choo ; Chuang, Li Yeh ; Yang, Cheng Hong. / Communication aid system for users with physical impairments. 於: Computers and Mathematics with Applications. 2002 ; 卷 43, 編號 6-7. 頁 901-910.
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Communication aid system for users with physical impairments. / Yang, Cheng Huei; Chung, Pau-Choo; Chuang, Li Yeh; Yang, Cheng Hong.

於: Computers and Mathematics with Applications, 卷 43, 編號 6-7, 01.03.2002, p. 901-910.

研究成果: Article

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