대한건축학회논문집 (Journal of the Architectural Institute of Korea)

  • 제36권7호
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  • Pages.131-138
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  • 2020
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  • 2733-6239(pISSN)
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  • 2733-6247(eISSN)
대한건축학회 (Architectural Institute of Korea)
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3차원 영상복원을 통한 모듈러 유닛의 비틀림 각 측정방법

Tilted Angle Measurement Method of Modular Unit by 3D Reconstruction of Image

  • 지형진 (경북대학교 건설환경에너지공학부) ;
  • 김구연 (경북대학교 건설환경에너지공학부) ;
  • 김홍진 (경북대학교 건축공학과)
  • 투고 : 2020.02.16
  • 심사 : 2020.06.18
  • 발행 : 2020.07.30
⟨ 이전 논문 다음 논문 ⟩

초록

This paper reviews a method of measuring the tilted of horizontal angle of modular unit roof that occurs during fabrication and site assembly phase using three-dimensional restoration image process. Checkerboard patterns were used for camera calibration, and image analysis performed 3D reconstruction by locating the center coordinates of the circular target. A miniature model experiment was conducted before it was applied to the actual modular unit. The experiment measured the target at a distance of 300mm, 400mm, 500mm for the eight tilted angles of 0.5°, 1°, 1.5°, 2°, 3°, 5°, 7° and 10°, depending on the quantity (4,8,16,32,64,128 sheets) and distribution of concentration and distribution of the image data used for camera calibration. In sections with a tilted angle of 4 degrees or less, the error of the measurement angle using the concentrated image data was less than the error of the measurement angle using the dispersed image data. The result of the target at a distance of 400 mm, 500 mm, excluding 300 mm, showed a small error at a tilted angle of less than 3 degrees. The result of 300mm distance showed very large errors due to distortion of circular targets. Errors were reduced by the number of images for camera calibration, and the quantity of image data used for camera calibration from 32 sheets did not significantly affect the error.

키워드

과제정보

이 논문은 국토교통부의 재원으로 국토교통과학기술진흥원의 지원을 받아 수행된 연구사업임(20CTAP-C152993-02)

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