A Study on 3-D Shape Measurement and Application by using Digital Projection $Moir\acute{e}$ ( I )

디지털 영사식 무아레를 이용한 3차원 형상 측정과 응용에 관한 연구( I )

  • 유원재 ((재)전주기계사업리서치센터(JMRC)) ;
  • 노형민 (한국과학기술연구원(KIST) 시스템연구부) ;
  • 이동환 (전북대 기계항공시스템공학부) ;
  • 강영준 (전북대 기계항공시스템공학부, 메카트로닉스센터)
  • Published : 2005.07.01

Abstract

$Moir\acute{e}$ topography method is a well-known non-contacting 3-D measurement method. Recently, the automatic 3-D measurement by $Moir\acute{e}$ topography has been required, since the method was frequently applied to the engineering and medical fields. The 3-D measurement using projection $Moir\acute{e}$ topography is very attractive because of its high measuring speed and high sensitivity. In this paper, using two-wavelength method of projection $Moir\acute{e}$ topography was tested to measuring object with $2\pi-ambiguity$ problems. The experimental results prove that the proposed scheme is capable of finding absolute fringe orders, so that the $2\pi-ambiguity$ problems can be effectively overcome so as to treat large step discontinuities in measured objects.

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References

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