Depth of Field Adaptation for Observation of Microscopic Objects by Using Variable Annular Aperture System

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dc.contributor.authorHong, Deokhwako
dc.contributor.authorCho, Hyungsuckko
dc.date.accessioned2013-03-11T17:17:54Z-
dc.date.available2013-03-11T17:17:54Z-
dc.date.created2012-02-06-
dc.date.created2012-02-06-
dc.date.issued2010-11-
dc.identifier.citationINTERNATIONAL JOURNAL OF OPTOMECHATRONICS, v.4, no.4, pp.379 - 396-
dc.identifier.issn1559-9612-
dc.identifier.urihttp://hdl.handle.net/10203/99704-
dc.description.abstractHigh magnification optical systems such as microscopes usually suffer from limited depth-of-field (DOF) problem. This hinders efficient observation of microscopic objects and prevents vision based approaches from being applied to automatic micromanipulation tasks. A DOF extension method using variable annular pupil was proposed by the authors' previous publication, and a tradeoff between the depth extension range and image quality was observed. In this article, this tradeoff is numerically analyzed by a proposed wavelet-based image quality measure, and a proper DOF scheme to provide the best image for the given object distribution is proposed. The problem is reduced to finding the optimum pupil division parameter. The experimental results conducted for various imaging conditions with some MEMS objects verify that the system DOF can be adjusted according to their position in depth direction to provide the best visibility.-
dc.languageEnglish-
dc.publisherTAYLOR & FRANCIS INC-
dc.subjectHIGH FOCAL DEPTH-
dc.subjectEXTENDED DEPTH-
dc.subjectIMAGING-SYSTEMS-
dc.subjectFOCUS-
dc.subjectREAL-
dc.titleDepth of Field Adaptation for Observation of Microscopic Objects by Using Variable Annular Aperture System-
dc.typeArticle-
dc.identifier.wosid000283873500004-
dc.identifier.scopusid2-s2.0-78149477764-
dc.type.rimsART-
dc.citation.volume4-
dc.citation.issue4-
dc.citation.beginningpage379-
dc.citation.endingpage396-
dc.citation.publicationnameINTERNATIONAL JOURNAL OF OPTOMECHATRONICS-
dc.identifier.doi10.1080/15599612.2010.522761-
dc.contributor.localauthorCho, Hyungsuck-
dc.type.journalArticleArticle-
dc.subject.keywordAuthoradaptation-
dc.subject.keywordAuthordepth-of-field-
dc.subject.keywordAuthorimage quality-
dc.subject.keywordAuthorLC-SLM-
dc.subject.keywordAuthorvariable aperture-
dc.subject.keywordPlusHIGH FOCAL DEPTH-
dc.subject.keywordPlusEXTENDED DEPTH-
dc.subject.keywordPlusIMAGING-SYSTEMS-
dc.subject.keywordPlusFOCUS-
dc.subject.keywordPlusREAL-
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