Please use this identifier to cite or link to this item:
|Title:||Retrieval of instantaneous frequency from digital holograms based on adaptive windows|
|Authors:||Chen, W. |
short-time Fourier transform
|Source:||Chen, W., Quan, C., Tay, C.J. (2008). Retrieval of instantaneous frequency from digital holograms based on adaptive windows. Optical Engineering 47 (6) : -. ScholarBank@NUS Repository. https://doi.org/10.1117/1.2939418|
|Abstract:||In recent years, time-frequency analysis methods have been significantly developed for the processing of fringe patterns. Among such methods, the short-time Fourier transform (STFT) has been proven a valid method to process noisy fringe patterns. In this paper, the complex phasor and the STFT are used to retrieve instantaneous frequency from a series of holograms based on adaptive windows. Continuous phase maps are calculated by integration of the extracted instantaneous frequency, and phase unwrapping is effectively avoided in both temporal and spatial domains. The validity of this method is verified by an experiment. In addition, a comparison between conventional temporal phase unwrapping and the STFT is presented. © 2008 Society of Photo-Optical Instrumentation Engineers.|
|Source Title:||Optical Engineering|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Feb 28, 2018
WEB OF SCIENCETM
checked on Feb 20, 2018
checked on Mar 12, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.