한국소음진동공학회논문집 (Transactions of the Korean Society for Noise and Vibration Engineering)

  • 제20권3호
  • /
  • Pages.308-315
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  • 2010
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  • 1598-2785(pISSN)
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  • 2287-5476(eISSN)
한국소음진동공학회 (The Korean Society for Noise and Vibration Engineering)
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사진측량 기반 동영상 동특성 추출

Photogrammetry-based Modal Parameter Extraction from Motion Pictures

  • 김병화 (경남대학교 토목공학과) ;
  • 여금수 (경남대학교 대학원 첨단공학과) ;
  • 김수진 (경남대학교 대학원 첨단공학과)
  • 발행 : 2010.03.20
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초록

This study introduces a new technique to estimate modal parameters of a vibrating string using motion pictures. The approach requires two motion pictures for a vibrating string captured simultaneously by typical potable digital cameras or camcorders. Applying the space intersection theory and the space resection theory in photogrammetry, the steroscopic images for the string are constructed from two flat plane pictures. Then the three dimensional displacement components of the string are extracted by a multiple template matching technique. Finally the modal parameters of the string are estimated from the resulting displacement time histories. The accuracy of the approach has been examined through a small-scale mock-up of a string.

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참고문헌

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