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

  • 제9권6호
  • /
  • Pages.448-455
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  • 2003
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  • 1976-5622(pISSN)
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  • 2233-4335(eISSN)
제어로봇시스템학회 (Institute of Control, Robotics and Systems)
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카메라를 이용한 ALC 블록의 치수계측 및 불량검사 자동화 시스템 개발

Development of Automatic Measurement and Inspection System for ALC Block Using Camera

  • 허경무 (단국대학교 전자컴퓨터학부) ;
  • 김성훈 (단국대학교 전자컴퓨터학부)
  • 발행 : 2003.06.01
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초록

A system design technique of automatic thickness measurement and defect inspection system, which measures the thickness of the ALC(Autoclaved Lightweight Concrete) block and inspects the defect on a realtime basis is proposed. The image processing system was established with a CCD camera, an image grabber, and a personal computer without using assembled measurement equipment. The image obtained by this system was analyzed by a devised algorithm, specially designed for the enhanced measurement accuracy. For the realization of the proposed algorithm, the preprocessing method that can be applied to overcome uneven lighting environment, an enhanced edge decision method using 8 edge-pairs with irregular and rough surface, the unit length decision method in uneven condition with rocking objects, and the curvature calibration method of camera using a constructed grid are developed. The experimental results, show that the required measurement accuracy specification is sufficiently satisfied using our proposed method.

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참고문헌

  1. E. Fink and M. Health,'Mage-processing projects for an algorithms course,' Int'l J. of Pattern Recognition and Artificial Intelligence, vol. 15, no. 5, pp. 859-868, Aug. 2001 https://doi.org/10.1142/S0218001401001192
  2. A. M. Darwish and A. K. Jain, 'A rule based approach for visual pattern inspection,' IEEE Tr. on Pattern Analysis and Machine Intelligence, vol. 10, no. 1, Jan. 1998 https://doi.org/10.1109/34.3867
  3. L. Ding and A. Goshtasby, 'On the canny edge Detector,' Pattern Recognition, vol. 34, no. 3, pp. 721-725, Mar. 2001 https://doi.org/10.1016/S0031-3203(00)00023-6
  4. A. Goshtasby and H. Shyu, 'Edge detection by curve fitting, image and vision computing,' Science Direct, vol. 13, no. 3, pp. 169-177 Apr. 1995 https://doi.org/10.1016/0262-8856(95)90837-X
  5. A. Watt and F. Policarpo, 'The computer image,' addison-wesley, 1998
  6. 이문규, 이정화, '2차원 영상의 좌표보정을 위한 카메라 오차보정,' 한국경영과학회/대한산업공학회 춘계공동학술대회, 1997
  7. J. Weng, P. Cohen, and M. Hemiou, 'Camera calibration with distortion models and accuracy evaluation,' IEEE Tr. on Pattern Analysis and Machine Intelligence, vol. 14, no. 10, pp. 965-980, 1992 https://doi.org/10.1109/34.159901