Please use this identifier to cite or link to this item: https://doi.org/10.1117/12.814555
Title: Phase retrieval in digital holographic interferometry based on complex phasor and short time Fourier transform
Authors: Wen, C. 
Chenggen, Q. 
Jui, T.C. 
Keywords: Complex phasor
Digital holographic interferometry
Phase retrieval
Short time Fourier transform
Issue Date: 2008
Source: Wen, C., Chenggen, Q., Jui, T.C. (2008). Phase retrieval in digital holographic interferometry based on complex phasor and short time Fourier transform. Proceedings of SPIE - The International Society for Optical Engineering 7155 : -. ScholarBank@NUS Repository. https://doi.org/10.1117/12.814555
Abstract: The determination of phase difference distributions is important in digital holographic interferometry. Many methods can be used to determine phase difference maps, such as Fourier transform, digital phase subtraction and phase-shifting. In recent years, some time-frequency analysis methods such as wavelet transform and short time Fourier transform (STFT) are developed to extract continuous phase maps without phase unwrapping in spatial and temporal domains. In this paper, STFT is investigated for the retrieval of phase difference in digital holographic interferometry. In addition, complex phasor (CP) method is employed in advance so as to make STFT available. An experiment is conducted to show the validity of the method based on STFT.
Source Title: Proceedings of SPIE - The International Society for Optical Engineering
URI: http://scholarbank.nus.edu.sg/handle/10635/73758
ISBN: 9780819473981
ISSN: 0277786X
DOI: 10.1117/12.814555
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