Analysis of CCD moirรฉ pattern for micro-
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Rong-Seng Chang; Jin-Yi Sheu; Ching-Huang Lin; He-Chiang Liu
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Article
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2003
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Elsevier Science
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English
โ 110 KB
A new approach based on the moirร e theory and wavelet transform (WT) is proposed for measuring the micro-range distance between a charge-couple-device (CCD) camera and a two-dimensional reference grating. The micro-range distance is determined by measuring the pitch of the moirร e pattern image, wh