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

Ryu Weon-Jae ((재)전주기계사업리서치센터(JMRC))
Rho Hyung-Min (한국과학기술연구원(KIST) 시스템연구부)
Lee Dong-Hwan (전북대 기계항공시스템공학부)
Kang Young-June (전북대 기계항공시스템공학부, 메카트로닉스센터)
Publication Information
Journal of the Korean Society for Precision Engineering / v.22, no.7, 2005 , pp. 88-93 More about this Journal
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.
Keywords
Projection moire method; Virtual Grating; 2pi-ambiguity;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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