Document Detail


Sequential demodulation of a single fringe pattern guided by local frequencies.
MedLine Citation:
PMID:  17186039     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
A simple but effective approach for the demodulation of a single fringe pattern is proposed. The phase with an undetermined sign is directly obtained by taking the arccosine value of a preprocessed fringe pattern. The local frequencies, also with an undetermined sign, are then estimated by local matching. The sign ambiguity is then removed simply by forcing the continuity of the local frequencies. The priority of sign determination is guided by the value of total local frequency (fringe density) so that the critical points are processed last. The proposed approach is verified by successful demodulation of a simulated fringe pattern and two experimental fringe patterns.
Authors:
Qian Kemao; Seah Hock Soon
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Optics letters     Volume:  32     ISSN:  0146-9592     ISO Abbreviation:  Opt Lett     Publication Date:  2007 Jan 
Date Detail:
Created Date:  2006-12-22     Completed Date:  2007-03-29     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7708433     Medline TA:  Opt Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  127-9     Citation Subset:  -    
Affiliation:
School of Computer Engineering, Nanyang Technological University, Singapore. mkmqian@ntu.edu.sg
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