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

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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A Visual Inspection System for Gravure Printing Using Perimetric Mask and Symmetry Transform Algorithm

주변마스크와 대칭변환 알고리즘을 이용한 그라비아 인쇄 불량 검사시스템

  • 이칠우 (전남대학교 컴퓨터정보통신공학과) ;
  • 김만진 (전남대학교 컴퓨터정보통신공학과) ;
  • 기명석 (한국정보통신 연구원 무선방송연구소)
  • Published : 2003.12.01
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Abstract

In Gravure printing process, there are a lot of printing errors caused by expansion and contraction of printing materials and difficulty of printing of small letters, accordingly we cannot detect those errors with eyes. In this paper, we describe the algorithm which can detect small errors automatically in Gravure printing process and a real-time detection system adopting the algorithm. We present the Perimetric Mask algorithm that can eliminate tiny errors occurring near the contour of printing objects to achieve accurate inspection, and also construct an algorithm utilizing symmetry transform which can emphasize tiny errors to make a robust inspection system. We have made a system running in real-time and verified the efficiency of the algorithm.

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References

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