Journal of the Korean Institute of Intelligent Systems (한국지능시스템학회논문지)

Korean Institute of Intelligent Systems (한국지능시스템학회)
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Alignment System for Display Panel using Edge Feature

에지 특징을 이용한 디스플레이 패널 설비의 얼라인 시스템

  • Lee, HoHun (Department of Control and Robotics Engineering, Chungbuk University) ;
  • Lee, DaeJong (Department of Control and Robotics Engineering, Chungbuk University) ;
  • Chun, MyungGeun (Department of Control and Robotics Engineering, Chungbuk University)
  • 이호훈 (충북대학교 제어로봇공학과, 컴퓨터정보통신 연구소) ;
  • 이대종 (충북대학교 제어로봇공학과, 컴퓨터정보통신 연구소) ;
  • 전명근 (충북대학교 제어로봇공학과, 컴퓨터정보통신 연구소)
  • Received : 2015.03.22
  • Accepted : 2015.05.27
  • Published : 2015.06.25
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Abstract

This paper proposes a alignment system using edge feature. An alignment system obtains the position and orientation of printed circuit board(PCB) or liquid crystal display(LCD) panel through the fiducial marks. Thus, it is the indicator of the system performance how accurate we detect the positions of the fiducial marks in the target image. Edges have the geometrical characteristics such as positions, lengths, and shapes. These features are suitable for finding the marks and have the advantages of lighting variations, model occlusion, as well as variations in scale and angle. The performance of the proposed system is validated through the alignment experiment using an display panel alignment system included X, Y axis, and rotatable stage.

본 논문은 에지 특징을 이용한 얼라인 시스템을 제안한다. 얼라인 시스템은 PCB나 LCD 패널 등에 새겨진 기준 마크(fiducial mark)를 통하여 위치 정보를 획득한다. 그러므로 획득한 영상에서 정확하게 기준 마크를 찾는 것이 얼라인 시스템 성능의 지표가 된다. 에지 특성은 위치, 길이, 형태 등의 기하학적 특징을 지니며 이런 특징은 기준 마크를 찾기 위해 적절하고, 밝기의 변화, 크기 및 각도의 변화에 강한 특성을 지닌다. X, Y 축 이동 및 회전 할 수 있는 장비와 소프트웨어을 이용한 얼라인먼트 실험을 통하여 제안한 시스템의 성능을 검증하였다.

Keywords

References

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