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Titolo:
Morse code recognition using learning vector quantization for persons withphysical disabilities
Autore:
Yang, CH;
Indirizzi:
Natl Kaohsiung Univ Appl Sci, Dept Elect Engn, Kaohsiung 807, Taiwan Natl Kaohsiung Univ Appl Sci Kaohsiung Taiwan 807 Kaohsiung 807, Taiwan
Titolo Testata:
IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES
fascicolo: 1, volume: E84A, anno: 2001,
pagine: 356 - 362
SICI:
0916-8508(200101)E84A:1<356:MCRULV>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
PATTERN-RECOGNITION; SYSTEM; LMS;
Keywords:
Morse code; adaptive signal processing; least-mean-square algorithm; learning vector quantization;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
--discip_EC--
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Yang, CH Natl Kaohsiung Univ Appl Sci, Dept Elect Engn, Kaohsiung 807, Taiwan Natl Kaohsiung Univ Appl Sci Kaohsiung Taiwan 807 g 807, Taiwan
Citazione:
C.H. Yang, "Morse code recognition using learning vector quantization for persons withphysical disabilities", IEICE T FUN, E84A(1), 2001, pp. 356-362

Abstract

For physically disabled persons, the conventional computer keyboard is insufficient as a useable communication device. In this paper, Morse code is selected as a communication adaptive device for persons with impaired hand coordination and dexterity. Morse code is composed of a series of dots, dashes, and space intervals. Each element is transmitted by sending a signal for a defined length of time. Maintaining a stable typing rate by the disabled is difficult. To solve this problem, a suitable adaptive automatic recognition method, which combines a variable degree variable step size LMS algorithm with a learning vector quantization method, was applied to this problem in the present study. The method presented here is divided into five stages: space recognition, tone recognition, learning process, adaptive processing, and character recognition. Statistical analyses demonstrated that the proposed method elicited a better recognition rate in comparison to alternative methods in the literature.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/03/20 alle ore 09:22:05