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|標題:||Theoretical analysis for surface tilt and translation detection based on speckle photography in the Fresnel domain||作者:||Hwang, H.E.
|關鍵字:||Tilt and translation detection;Fringe analysis;Speckle interferometry;Fresnel diffraction;fractional fourier-transform;motion detection;image encryption;interferometry;diffraction;algorithm;system||Project:||Optics Communications||期刊/報告no：:||Optics Communications, Volume 282, Issue 3, Page(s) 351-354.||摘要:||
The theoretical and numerical analysis in this work show that both surface tilting and translational motion can be simultaneously calculated using the speckle photographic technique by recording consecutive speckle pattern images in two different Fresnel diffraction distances. A simulation example based on the proposed scheme is given to verify the method's validity and high accuracy of the calculated motion detection. Compared with other previous works the results show that this method is efficient and easy to implement. (C) 2008 Elsevier B.V. All rights reserved.
|Appears in Collections:||精密工程研究所|
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