Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/57931
Title: Application of the FFT method for the quantitative extraction of information from high-resolution interferometric and photoelastic data
Authors: Bryanston-Cross, P.J.
Quan, C. 
Judge, T.R.
Keywords: Fourier transforms
fringe analysis
fringe patterns
phase-unwrapping
photoelasticity
Issue Date: Jun-1994
Source: Bryanston-Cross, P.J.,Quan, C.,Judge, T.R. (1994-06). Application of the FFT method for the quantitative extraction of information from high-resolution interferometric and photoelastic data. Optics and Laser Technology 26 (3) : 147-155. ScholarBank@NUS Repository.
Abstract: This paper describes the application of a digital Fourier transform to phase encoded intensity distribution. Attention is drawn to a method of extracting quantitative information automatically from the interferometric fringe data. To achieve this, a set of carrier fringes has been added to interferometric fringe data. This has made it possible to form a phase map using a FFT (fast Fourier transform) algorithm. A minimum spanning tree (MST) phase unwrapping strategy has been used to create a contiguous map of the whole fringe field. Finally, the measurement parameter related to the fringe field has been calculated from one single image. Experimental results are given for the burner flames, a compressible flow and photoelastic fringe data. It has been shown that the methods developed have the potential for use as reflection analysis systems suitable for applications to non-stationary objects and complicated fringe fields. © 1994.
Source Title: Optics and Laser Technology
URI: http://scholarbank.nus.edu.sg/handle/10635/57931
ISSN: 00303992
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

36
checked on Feb 16, 2018

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.