Journal of the Semiconductor & Display Technology (반도체디스플레이기술학회지)

The Korean Society Of Semiconductor & Display Technology (한국반도체디스플레이기술학회)
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A Video based Web Inspection System for Real-time Detection of Paper Defects during Papermaking Processes

제지공정의 실시간 결함 검출을 위한 영상 기반 웹 검사 시스템

  • Hahn, Jong-Woo (Korea University of Technology and Education, School of Computer Science and Engineering) ;
  • Choi, Young-Kyu (Korea University of Technology and Education, School of Computer Science and Engineering)
  • 한종우 (한국기술교육대학교 컴퓨터공학부) ;
  • 최영규 (한국기술교육대학교 컴퓨터공학부)
  • Received : 2010.05.29
  • Accepted : 2010.06.15
  • Published : 2010.06.30
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Abstract

In this paper, we propose a web inspection system (WIS) for real-time detection of paper defects which can cause critical fractures during papermaking process. Our system incorporates high speed line-scan camera, lighting system, and detection algorithm to provide robust and precise detection of paper defects in real-time. Since edge defects are very crucial to the paper fractures, our system focuses on the edge region of the paper instead of inspecting the whole paper area. In our algorithm, image projection and sub-pixel operation are utilized to detect the edge defects precisely and connected component labeling and shape analysis techniques are adopted to extract various kinds of the region defects. Experimental results revealed that our web inspection system is very efficient for detecting paper defects during papermaking processes.

Keywords

References

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