| Speckle-noise-reduction method of projecting interferometry fringes based on power spectrum density. | |
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MedLine Citation:
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PMID: 23052075 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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The fringe projection technique plays an important role in surface inspection, due to its noncontact, full-field acquisition and high resolution. When using projecting interferometry fringes, one of the basic problems encountered is the speckle noise existing in the fringe pattern. In this paper, a novel method is proposed to reduce the speckle noise based on power spectrum density (PSD) thresholding, which consists of three steps: first, PSD is calculated according to the frequency spectrum obtained by Fourier transform; second, a filter is constructed by a PSD thresholding to filter the frequency content of the speckle noise; and finally inverse Fourier transform is used to obtain the noise-reduction image. Experimental results prove the feasibility and effectiveness of the presented method. |
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Authors:
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Liping Zhou; Jianghong Gan; Xiaojun Liu; Long Xu; Wenlong Lu |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Applied optics Volume: 51 ISSN: 1539-4522 ISO Abbreviation: Appl Opt Publication Date: 2012 Oct |
Date Detail:
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Created Date: 2012-10-11 Completed Date: - 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: 6974-8 Citation Subset: IM |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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