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Proceedings Paper

Fringe pattern analysis using a one-dimensional modified Morlet continuous wavelet transform
Author(s): Abdulbasit Z. Abid; Munther A. Gdeisat; David R. Burton; Michael J. Lalor; Hussein S. Abdul-Rahman; Francis Lilley
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Paper Abstract

This paper proposes the use of a modified Morlet wavelet in order to demodulate fringe patterns in conjunction with the one-dimensional continuous wavelet transform (1D-CWT). Our investigations demonstrate that the modified Morlet wavelet produces better results compared to the conventional Morlet wavelet when used in fringe pattern analysis. This novel technique offers superior performance in analysing fringe patterns from objects that exhibit large height variations. This new technique has been used in conjunction with the direct maximum ridge extraction algorithm and an improvement in performance is observed. The algorithm has been tested using both computer-generated and real fringe patterns; and was found to be suitable for fringe pattern demodulation and robust in operation.

Paper Details

Date Published: 25 April 2008
PDF: 6 pages
Proc. SPIE 7000, Optical and Digital Image Processing, 70000Q (25 April 2008); doi: 10.1117/12.781677
Show Author Affiliations
Abdulbasit Z. Abid, Liverpool John Moores Univ. (United Kingdom)
Munther A. Gdeisat, Liverpool John Moores Univ. (United Kingdom)
David R. Burton, Liverpool John Moores Univ. (United Kingdom)
Michael J. Lalor, Liverpool John Moores Univ. (United Kingdom)
Hussein S. Abdul-Rahman, Liverpool John Moores Univ. (United Kingdom)
Francis Lilley, Liverpool John Moores Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 7000:
Optical and Digital Image Processing
Peter Schelkens; Touradj Ebrahimi; Gabriel Cristóbal; Frédéric Truchetet, Editor(s)

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