OSA's Digital Library

Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 35, Iss. 21 — Nov. 1, 2010
  • pp: 3682–3684

Pulse-width modulation in defocused three-dimensional fringe projection

Gastón A. Ayubi, Jaime A. Ayubi, J. Matías Di Martino, and José A. Ferrari  »View Author Affiliations


Optics Letters, Vol. 35, Issue 21, pp. 3682-3684 (2010)
http://dx.doi.org/10.1364/OL.35.003682


View Full Text Article

Enhanced HTML    Acrobat PDF (629 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

Shape measurements by fringe projection methods require high-quality sinusoidal fringes. We present a sinusoidal fringe generation technique that utilizes slightly defocused binary fringe projection. The proposed method is a spatial version of the well-known pulse-width modulation (PWM) technique of electrical engineering. PWM is easy to implement using off-the-shelf projectors, and it allows us to overcome the gamma problem (i.e., the nonlinear projector response) in the output light intensity. We will demonstrate that, with a small defocusing level—lower than with other techniques proposed in the literature—a high-quality sinusoidal pattern is obtained. Validation experiments using a commercial video projector are presented.

© 2010 Optical Society of America

OCIS Codes
(100.5070) Image processing : Phase retrieval
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis

ToC Category:
Image Processing

History
Original Manuscript: August 6, 2010
Manuscript Accepted: September 28, 2010
Published: October 28, 2010

Citation
Gastón A. Ayubi, Jaime A. Ayubi, J. Matías Di Martino, and José A. Ferrari, "Pulse-width modulation in defocused three-dimensional fringe projection," Opt. Lett. 35, 3682-3684 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-21-3682


Sort:  Author  |  Year  |  Journal  |  Reset  

References

  1. K. Creath, J. Schmit, and J. C. Wyant, in Optical Shop Testing, 3rd ed., D.Malacara, ed. (Wiley, 2007), Chap. 16.
  2. H. Schreiber and J. H. Bruning, in Optical Shop Testing, 3rd ed., D.Malacara, ed. (Wiley, 2007), Chap. 14.
  3. 3-D Machine Vision Laboratory, http://www.vrac.iastate.edu/~song/.
  4. P. S. Huang, C. Zhang, and F.-P. Chiang, Opt. Eng. 42, 163(2003). [CrossRef]
  5. S. Kakunai, T. Sakamoto, and K. Iwata, Appl. Opt. 38, 2824 (1999). [CrossRef]
  6. S. Zhang and P. S. Huang, Opt. Eng. 46, 063601 (2007). [CrossRef]
  7. S. Zhang and S.-T. Yau, Appl. Opt. 46, 36 (2007). [CrossRef]
  8. H. Guo, H. He, and M. Chen, Appl. Opt. 43, 2906 (2004). [CrossRef] [PubMed]
  9. B. Pan, Q. Kemao, L. Huang, and A. Asundi, Opt. Lett. 34, 416 (2009). [CrossRef] [PubMed]
  10. S. Lei and S. Zhang, Opt. Lett. 34, 3080 (2009). [CrossRef] [PubMed]
  11. “Airy disk,” http://en.wikipedia.org/wiki/Airy_disc.
  12. Z. Song and D. V. Sarwate, Signal Process. 83, 2227 (2003). [CrossRef]
  13. S. R. Bowes, Proc. IEEE 122, 1285 (1975).
  14. B. W. Williams, Principles and Elements of Power Electronics (B. W. Williams, 2006), Chap. 15.

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.

Figures

Fig. 1 Fig. 2 Fig. 3
 
Fig. 4
 

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited