Determination of height profile from a two-dimensional fringe signal using a two-dimensional continuous wavelet transform

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dc.authorscopusid16029234400
dc.contributor.authorKocahan Yılmaz, Özlem
dc.date.accessioned2022-05-11T14:29:33Z
dc.date.available2022-05-11T14:29:33Z
dc.date.issued2017
dc.departmentFakülteler, Fen Edebiyat Fakültesi, Fizik Bölümü
dc.description.abstractThe main objective of this study was 3-dimensional (3D) profile measurements with standard fringe projection, consisting of a CCD and a projector. For obtaining height information of objects pixel by pixel, phases have to be calculated from the images taken by the fringe projection technique. In this study, the 2-dimensional continuous wavelet transform (2D CWT) phase method was used for phase extraction. 1D and 2D CWT analyses of noisy images were compared in simulations performed for a 2-dimensional fringe signal by introducing the carrier frequencies in two spatial directions, x and y. Profile measurement of an object was made experimentally by cross optical axis geometry. Images, using fringes with two carrier frequencies, taken from this setup were analyzed with 2D CWT and 3D profiles of objects were obtained. Numerical simulations and actual experiments were carried out to show the validity of this technique for finding phase distributions from noisy images.
dc.identifier.doi10.3906/fiz-1607-9
dc.identifier.endpage89
dc.identifier.issn1300-0101
dc.identifier.issn1303-6122
dc.identifier.issue1en_US
dc.identifier.scopus2-s2.0-85015430921
dc.identifier.scopusqualityQ3
dc.identifier.startpage81
dc.identifier.urihttps://doi.org/10.3906/fiz-1607-9
dc.identifier.urihttps://hdl.handle.net/20.500.11776/7029
dc.identifier.volume41
dc.identifier.wosWOS:000396588200010
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorKocahan Yılmaz, Özlem
dc.language.isoen
dc.publisherScientific Technical Research Council Turkey-Tubitak
dc.relation.ispartofTurkish Journal of Physics
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectContinuous wavelet transform
dc.subjectwavelet transform profilometry
dc.subjectfringe projection techniques
dc.subjectphase calculation
dc.subjectfringe pattern
dc.subjectFourier-Transform
dc.subjectProfilometry
dc.subjectInterferometer
dc.subjectProjection
dc.titleDetermination of height profile from a two-dimensional fringe signal using a two-dimensional continuous wavelet transform
dc.typeArticle

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