Comment on the paper: H.-E. Hwang, P. Han, Theoretical analysis for surface tilt and translation detection based on speckle photography in the Fresnel domain, Opt. Commun. 282 (2009) 351-354 |
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| Authors: | Jennifer E Ward Bryan M Hennelly |
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| Institution: | a UCD Communications and Optoelectronic Research Centre, SFI Strategic Research Cluster in Solar Energy Conversion, School of Electrical, Electronic and Mechanical Engineering, College of Engineering, Mathematics and Physical Sciences, University College Dublin, National University of Ireland, Belfield, Dublin D-4, Ireland
b Department of Computer Science, National University of Ireland, Maynooth (NUIM), Ireland |
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| Abstract: | In a recent paper H.-E. Hwang, P. Han, Opt. Commun. 282 (2009) 351] a speckle based metrology system is proposed which it is claimed provides significant advantages over existing systems. In this paper, we show that the discussion presented in H.-E. Hwang, P. Han, Opt. Commun. 282 (2009) 351] is deficient, and that several of the statements made are incorrect and/or misleading. |
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| Keywords: | Speckle photography Speckle metrology Linear Canonical Transform Fractional Fourier Transform Fresnel Transform Optical information processing |
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