The Journal of the Korea institute of electronic communication sciences (한국전자통신학회논문지)

Korea Institute of Electronic Communication Science (한국전자통신학회)
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Auto Braille Translator using Matlab

Matlab을 이용한 자동 점자 변환기

  • 김현진 (남서울대학교 전자공학과) ;
  • 김예찬 (남서울대학교 전자공학과) ;
  • 박창진 (남서울대학교 전자공학과) ;
  • 오세종 (남서울대학교 전자공학과) ;
  • 이붕주 (남서울대학교 전자공학과)
  • Received : 2017.06.16
  • Accepted : 2017.08.01
  • Published : 2017.08.31
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Abstract

This paper describes the design and implementation of automatic braille converter based on image processing for a person who is visually impaired. The conversion algorithm based on the image processing converts the input image obtained by the web-cam to binary image, and then calculates the cross-correlation with the stored character pattern image by labeling the character area and converts the character pattern image into the corresponding braille. The computer simulations showed that the proposed algorithm showed 95% and 91% conversion success rates for numerals and alphabets printed on A5 paper. The prototype test implemented by the servo motor using Arduino confirmed 89%, conversion performance. Therefore, we confirmed the feasibility of the automatic braille transducer.

본 논문은 시각 장애인들을 위해 영상처리 기반의 자동 점자 변환기의 설계 및 구현에 관한 내용을 기술한다. 영상처리 기반의 변환 알고리즘은 웹캠으로 획득한 입력 영상을 이진 영상화 한 다음, 문자 영역을 라벨링 처리하여 저장되어 있는 문자 패턴 영상과 상호 상관도를 계산하여 해당되는 점자로 변환한다. 컴퓨터 시뮬레이션을 통해 제안한 알고리즘을 모의 실험한 결과, A5 용지에 인쇄된 숫자와 알파벳에 대하여 각각 95%, 91% 변환 성공률을 보여 주었고, 아두이노를 이용하여 서보모터로 구현한 시제품 시험을 통해 89% 변환 성능을 확인함으로서 구현된 자동 점자 변환기의 실용화 가능성을 확인하였다.

Keywords

References

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