Method and device for non-contact three dimensional object surface imaging
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United States of America Patent
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Oct 10, 2017
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May 20, 2011
filing date -
May 20, 2011
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Abstract
A slit m is projected onto an object surface in which reference point X1 is in a horizontal axis x closest to in focus point P. One image of a field of view area F is acquired after reflection of light comprising said reference point X1. Position Z1 of the object in a vertical axis z is determined. Images of respective field of view areas F are acquired after reflection of light having reference points X2, X3 . . . Xn by simultaneously moving the object along axis z to maintain reference points X2, X3 . . . Xn closest to in focus point P. Positions Z2, Z3 . . . Zn in which images were acquired are determined. The in focus point P along horizontal axis x is determined for each image. A correction differential Δ1, Δ2 . . . Δn between in focus point P and reference points X1, X2 . . . Xn is calculated.
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