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툴링볼을 이용한 레지스트레이션시 오차 감소에 관한 연구
홍성균(Sung-Kyun Hong),김연술(Yeun-sul Kim),이희관(Hi-Koan Lee),공영식(Young-Sik Kong),양균의(Gyun-Eui Yang) 한국자동차공학회 2002 한국자동차공학회 Symposium Vol.2002 No.11
This study proposes a method to reduce errors in registration using tooling balls. The method consists of 2 stages. First the data loss of the tooling ball affects calculating the tooling ball center. A z-direction compensation is given to calculate more accurate registration points. Second, three points are used to determine a transformation matrix on each frame. As merging, the maximum error usually lies on the third tooling ball in the conventional method selecting a point among three points randomly. We find the centroid of 3 points and apply it to determine a new transformation matrix.