Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/92036
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dc.contributor.authorTay, Cho Juien
dc.contributor.authorFu, Yuen
dc.date.accessioned2010-11-23T08:27:09Zen
dc.date.accessioned2019-12-06T18:16:11Z-
dc.date.available2010-11-23T08:27:09Zen
dc.date.available2019-12-06T18:16:11Z-
dc.date.copyright2005en
dc.date.issued2005en
dc.identifier.citationTay. C. J., & Fu, Y. (2005). Determination of curvature and twist by digital shearography and wavelet transform. Optics Letters, 30(21), 2873-2875.en
dc.identifier.issn0146-9592en
dc.identifier.urihttps://hdl.handle.net/10356/92036-
dc.identifier.urihttp://hdl.handle.net/10220/6470en
dc.description.abstractA new technique based on digital shearography for determining the transient curvature and twist of a continuously deforming object from a series of speckle patterns is presented. The intensity variation of each pixel is analyzed along the time axis by using a complex Morlet wavelet transform. The absolute sign of the phase variation is determined by introduction of a temporal carrier when the speckle patterns are captured by a high-speed camera. A high-quality spatial distribution of the deflection derivative is extracted at any instant without the need for temporal or spatial phase unwrapping. The continuous Haar wavelet transform is subsequently processed as a differentiation operator to reconstruct the instantaneous curvature and twist of a continuously deforming object.en
dc.format.extent3 p.en
dc.language.isoenen
dc.relation.ispartofseriesOptics Lettersen
dc.rightsThis paper was published in [Optics Letters] and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: [http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-21-2873]. Systematic or multiple reproduction or distribution to multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.en
dc.subjectDRNTU::Science::Physics::Optics and lighten
dc.titleDetermination of curvature and twist by digital shearography and wavelet transformsen
dc.typeJournal Articleen
dc.contributor.researchTemasek Laboratoriesen
dc.identifier.doihttp://dx.doi.org/10.1364/OL.30.002873en
dc.description.versionPublished versionen
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