| Local frequency estimation for the fringe pattern with a spatial carrier: principle and applications. | |
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MedLine Citation:
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PMID: 17304304 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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A local frequency estimation approach for the fringe pattern with a spatial carrier by which the 2D spatial frequencies at a certain pixel are estimated from its neighborhood is presented. The applications of this approach in the fringe pattern analyses are also introduced. First, a 2D spatial carrier phase-shifting algorithm is derived. With it the detuning errors induced by frequency mismatching are avoided, and the stronger phase deformations can be successfully coped with. Second, a novel aperture extrapolation method is developed by which the phase accuracies of the Fourier-transform method at the aperture boundaries are effectively improved. |
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Authors:
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Hongwei Guo; Qi Yang; Mingyi Chen |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Applied optics Volume: 46 ISSN: 0003-6935 ISO Abbreviation: Appl Opt Publication Date: 2007 Mar |
Date Detail:
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Created Date: 2007-02-16 Completed Date: 2007-07-12 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0247660 Medline TA: Appl Opt Country: United States |
Other Details:
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Languages: eng Pagination: 1057-65 Citation Subset: - |
Affiliation:
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Department of Precision Mechanical Engineering, Shanghai University, China. hw-guo@yeah.net |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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