Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.optcom.2008.11.056
Title: Determination of displacement derivative in digital holographic interferometry
Authors: Quan, C. 
Tay, C.J. 
Chen, W. 
Keywords: Complex phasor (CP)
Digital holographic interferometry (DHI)
Displacement derivative
Short time Fourier transform (STFT)
Issue Date: 1-Mar-2009
Source: Quan, C., Tay, C.J., Chen, W. (2009-03-01). Determination of displacement derivative in digital holographic interferometry. Optics Communications 282 (5) : 809-815. ScholarBank@NUS Repository. https://doi.org/10.1016/j.optcom.2008.11.056
Abstract: Digital holography (DH) and digital shearography (DS) both play an important role in non-destructive evaluation. In this paper, a novel method based on digital holographic interferometry (DHI) and complex phasor (CP) is proposed to determine displacement derivative. An algorithm is employed to filter the imaginary and real parts of complex values without the need of direct phase manipulation. Two-dimensional short time Fourier transform (STFT) is employed subsequently to process wrapped phase maps. An experiment is conducted to demonstrate the validity of the proposed method. © 2008 Elsevier B.V. All rights reserved.
Source Title: Optics Communications
URI: http://scholarbank.nus.edu.sg/handle/10635/59881
ISSN: 00304018
DOI: 10.1016/j.optcom.2008.11.056
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