반도체디스플레이기술학회지 (Journal of the Semiconductor & Display Technology)

한국반도체디스플레이기술학회 (The Korean Society Of Semiconductor & Display Technology)
권호 표지

영상 형태학적 처리와 원형 정합을 이용한 도트 매트릭스 LED 디스플레이의 숫자 인식

Number Recognition of Dot Matrix LED Display Using Morphological Processing and Template Matching

  • 정민철 (상명대학교 공과대학 전자공학과)
  • Jung, Min Chul (Dept. of Electronic Engineering, Sangmyung University)
  • 투고 : 2018.06.08
  • 심사 : 2018.06.19
  • 발행 : 2018.06.30
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초록

This paper proposes a new method for the number recognition on dot matrix LED display. The proposed method uses morphological processing that dilates dots of numbers and connects the dots into strokes. The size of numbers is normalized using horizontal projection because the gaps of dots are different according to the size of numbers. The numbers are segmented by connected component analysis and finally, template matching method recognizes the segmented numbers. The proposed method is implemented using C language in Raspberry Pi system with a camera module for a real-time image processing. Experiments were conducted by using various dot matrix LED displays. The results show that the proposed method is successful for the number recognition on dot matrix LED display.

키워드

참고문헌

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