Please use this identifier to cite or link to this item: https://doi.org/10.1364/AO.47.002874
Title: Measurement of curvature and twist of a deformed object using digital holography
Authors: Chen, W. 
Quan, C. 
Tay, C.J. 
Issue Date: 20-May-2008
Source: Chen, W.,Quan, C.,Tay, C.J. (2008-05-20). Measurement of curvature and twist of a deformed object using digital holography. Applied Optics 47 (15) : 2874-2881. ScholarBank@NUS Repository. https://doi.org/10.1364/AO.47.002874
Abstract: Measurement of curvature and twist is an important aspect in the study of object deformation. In recent years, several methods have been proposed to determine curvature and twist of a deformed object using digital shearography. Here we propose a novel method to determine the curvature and twist of a deformed object using digital holography and a complex phasor. A sine/cosine transformation method and two-dimensional short time Fourier transform are proposed subsequently to process the wrapped phase maps. It is shown that high-quality phase maps corresponding to curvature and twist can be obtained. An experiment is conducted to demonstrate the validity of the proposed method. © 2008 Optical Society of America.
Source Title: Applied Optics
URI: http://scholarbank.nus.edu.sg/handle/10635/60695
ISSN: 00036935
DOI: 10.1364/AO.47.002874
Appears in Collections:Staff Publications

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