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Title: Phase retrieval in two-wavelength DSSI using a combined filtering method
Authors: Tay, C.J. 
Quan, C. 
Niu, H.
Bhaduri, B. 
Keywords: Phase retrieval
Phase shifting
Phase unwrapping
Speckle shearing interferometry
Issue Date: Dec-2011
Citation: Tay, C.J., Quan, C., Niu, H., Bhaduri, B. (2011-12). Phase retrieval in two-wavelength DSSI using a combined filtering method. Optik 122 (23) : 2114-2118. ScholarBank@NUS Repository.
Abstract: Phase retrieval in two-wavelength DSSI (digital speckle shearing interferometry) using a combined filtering method is proposed for small deformation derivative measurement. A simultaneous two-wavelength illumination and 3-CCD camera are employed in the experimental setup. The proposed method, which uses a two-wavelength technique does not require the conventional spatial phase unwrapping and has the advantage of good noise suppression for phase retrieval. Experimental results obtained show that using the proposed combined filtering method sensitivity similar to the single wavelength technique can be achieved. © 2011 Elsevier GmbH. All rights reserved.
Source Title: Optik
ISSN: 00304026
DOI: 10.1016/j.ijleo.2011.01.007
Appears in Collections:Staff Publications

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