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12 February 2001 Method for 3D small angle measurement
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The paper presents a new method of measuring 3D small angles. In the method, a collimated parallel ray is projected on a double-face-reflector, a CCD detects the position changes of the returned light points and by them, the paper sets up the measurement model of 3D small angles. It describes the characteristics of this method and gives its resolving method. The simulation tests verify their correctness. Finally, the paper does some analyses of the effect of some system parameters on the measurement..
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Zhi-jiang Zhang and Yingjie Yu "Method for 3D small angle measurement", Proc. SPIE 4189, Machine Vision and Three-Dimensional Imaging Systems for Inspection and Metrology, (12 February 2001);

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