Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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A Study on Reducing Errors in Scanning Object and Registration using a Laser Scanner

레이저 스캐너를 이용한 측정 및 레지스트레이션시 오차감소에 관한 연구

  • 홍성균 (전북대학교 대학원) ;
  • 김연술 (전북대학교 대학원) ;
  • 이희관 (전북대학교 자동차부품금형기술혁신센터) ;
  • 김형찬 (한국생산기술연구원) ;
  • 양균의 (전북대학교 기계항공시스템공학부)
  • Published : 2003.09.01
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Abstract

This study proposes a method to reduce errors in scanning object and registration using a laser scanner. The method consists of 3 stages. First, there is an error induced by the difference of the distance between the probe and the object. It is possible to reduce the error by planning a scanning strategy: object setting, scan path. Second, the scan data of the tooling ball affects calculating the tooling ball center. A z-direction compensation is given to calculate more accurate registration points. Third, three points are used to determine a coordinate transformation on each frame. The maximum error usually lies on the third tooling ball in the conventional merging method. LSM (Least Square Method) is applied to a coordinate transformation to reduce the registration error.

Keywords

References

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