OSA's Digital Library

Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 30, Iss. 21 — Nov. 1, 2005
  • pp: 2873–2875

Determination of curvature and twist by digital shearography and wavelet transforms

Cho Jui Tay and Yu Fu  »View Author Affiliations


Optics Letters, Vol. 30, Issue 21, pp. 2873-2875 (2005)
http://dx.doi.org/10.1364/OL.30.002873


View Full Text Article

Acrobat PDF (314 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

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.

© 2005 Optical Society of America

OCIS Codes
(100.7410) Image processing : Wavelets
(110.6150) Imaging systems : Speckle imaging
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(120.6160) Instrumentation, measurement, and metrology : Speckle interferometry

ToC Category:
Holography

Citation
Cho Jui Tay and Yu Fu, "Determination of curvature and twist by digital shearography and wavelet transforms," Opt. Lett. 30, 2873-2875 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-21-2873


Sort:  Author  |  Year  |  Journal  |  Reset

References

  1. Y. Y. Hung, Opt. Lasers Eng.  26, 421 (1997). [CrossRef]
  2. Y. Y. Hung, Opt. Eng.  21, 391 (1982).
  3. Y. Y. Hung, Opt. Commun.  11, 132 (1974). [CrossRef]
  4. Y. Y. Hung, Opt. Lasers Eng.  24, 161 (1996). [CrossRef]
  5. Y. Y. Hung, Trends in Optical Non-Destructive Testing and Inspection (Elsevier, 2000), Chap. 20.
  6. C. J. Tay, S. L. Toh, H. M. Shang, and Q. Y. Lin, Opt. Laser Technol.  26, 91 (1994).
  7. C. J. Tay, S. L. Toh, H. M. Shang, and Q. Y. Lin, Appl. Opt.  34, 2202 (1995).
  8. P. K. Rastogi, Opt. Lett.  21, 905 (1996).
  9. F. S. Chau and J. Zhou, Opt. Lasers Eng.  39, 431 (2003).
  10. Y. Fu, C. J. Tay, C. Quan, and L. J. Chen, Opt. Eng.  43, 2780 (2004).
  11. Y. Fu, C. J. Tay, C. Quan, and H. Miao, Appl. Opt.  44, 959 (2005). [CrossRef]
  12. J. A. Leendertz and J. N. Butters, J. Phys. E  6, 1107 (1973). [CrossRef]
  13. C. Joenathan, B. Franze, P. Haible, and H. J. Tiziani, Opt. Eng.  37, 1790 (1998). [CrossRef]
  14. I. Daubechies, Ten Lectures on Wavelets (Society for Industrial and Applied Mathematics, 1992), Chap. 2.
  15. L. R. Watkins, S. M. Tan, and T. H. Barnes, Opt. Lett.  24, 905 (1999). [CrossRef]
  16. J. Fang, C. Y. Xiong, and Z. L. Yang, J. Mod. Opt.  48, 507 (2001).
  17. J. Cao and Y. Sun, in Proc. SPIE  2536, 57 (1995).

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited