제어로봇시스템학회논문지 (Journal of Institute of Control, Robotics and Systems)

  • 제10권8호
  • /
  • Pages.726-733
  • /
  • 2004
  • /
  • 1976-5622(pISSN)
  • /
  • 2233-4335(eISSN)
제어로봇시스템학회 (Institute of Control, Robotics and Systems)
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동적계획법을 이용한 자동화 공정에서의 제품 ID 마크 자동분할 알고리듬 개발

Development of an Image Segmentation Algorithm using Dynamic Programming for Object ID Marks in Automation Process

  • 유동훈 (동명정보대학교 메카트로닉스공학과) ;
  • 안인모 (마산대학 전기콤퓨터공학) ;
  • 김민성 (동명정보대학교 정보통신공학) ;
  • 강동중 (동명정보대학교 메카트로닉스공학과)
  • 발행 : 2004.08.01
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초록

This paper presents a method to segment object ID(identification) marks on poor quality images under uncontrolled lighting conditions of automated inspection process. The method is based on dynamic programming using multiple templates and normalized gray-level correlation (NGC) method. If the lighting condition is not good and hence, we can not control the image quality, target image to be inspected presents poor quality ID marks and it is not easy to identify and recognize the ID characters. Conventional several methods to segment the interesting ID mark regions fail on the bad quality images. In this paper, we propose a multiple template method, which uses combinational relation of multiple templates from model templates to match several characters of the inspection images. To increase the computation speed to segment the ID mark regions, we introduce the dynamic programming based algorithm. Experimental results using images from real factory automation(FA) environment are presented.

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참고문헌

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