Please use this identifier to cite or link to this item:
https://hdl.handle.net/10356/92036
Title: | Determination of curvature and twist by digital shearography and wavelet transforms | Authors: | Tay, Cho Jui Fu, Yu |
Keywords: | DRNTU::Science::Physics::Optics and light | Issue Date: | 2005 | Source: | Tay. C. J., & Fu, Y. (2005). Determination of curvature and twist by digital shearography and wavelet transform. Optics Letters, 30(21), 2873-2875. | Series/Report no.: | Optics Letters | Abstract: | A 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. | URI: | https://hdl.handle.net/10356/92036 http://hdl.handle.net/10220/6470 |
ISSN: | 0146-9592 | DOI: | 10.1364/OL.30.002873 | Research Centres: | Temasek Laboratories | Rights: | This 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. | Fulltext Permission: | open | Fulltext Availability: | With Fulltext |
Appears in Collections: | TL Journal Articles |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Determination of curvature and twist by digital shearography and wavelet transform.pdf | 313.77 kB | Adobe PDF | View/Open |
SCOPUSTM
Citations
10
32
Updated on Mar 6, 2024
Web of ScienceTM
Citations
10
30
Updated on Oct 26, 2023
Page view(s) 1
1,395
Updated on Mar 18, 2024
Download(s) 5
913
Updated on Mar 18, 2024
Google ScholarTM
Check
Altmetric
Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.