OSA's Digital Library

Applied Optics

Applied Optics


  • Vol. 38, Iss. 10 — Apr. 1, 1999
  • pp: 1990–1997

Measurement of shape by using projected random patterns and temporal digital speckle photography

Mikael Sjödahl and Per Synnergren  »View Author Affiliations

Applied Optics, Vol. 38, Issue 10, pp. 1990-1997 (1999)

View Full Text Article

Enhanced HTML    Acrobat PDF (134 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



Projected random patterns have been used to measure the shape of discontinuous objects. A sequence of independent random patterns are projected onto the object. These images are analyzed by use of the technique called temporal digital speckle photography (DSP) that is introduced here. With temporal DSP the spatial resolution of the shape measurement is improved considerably compared with previously reported results with projected random patterns. A calibration procedure is described that uses a sequence of independent random patterns to calibrate measurement volume. As a result, independent space coordinates for each subimage are obtained. The accuracy is of the order of 1/1000 of the field of view where a subimage size of 8 pixels seems to be a good compromise between reliability and spatial resolution. The technique is illustrated with a measurement of an electrical plug and a 9-V battery.

© 1999 Optical Society of America

OCIS Codes
(120.3940) Instrumentation, measurement, and metrology : Metrology
(120.6150) Instrumentation, measurement, and metrology : Speckle imaging
(120.6650) Instrumentation, measurement, and metrology : Surface measurements, figure

Original Manuscript: October 12, 1998
Revised Manuscript: December 21, 1998
Published: April 1, 1999

Mikael Sjödahl and Per Synnergren, "Measurement of shape by using projected random patterns and temporal digital speckle photography," Appl. Opt. 38, 1990-1997 (1999)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. R. E. Brooks, L. O. Heflinger, “Moiré gauging using optical interference patterns,” Appl. Opt. 8, 935–939 (1969). [CrossRef] [PubMed]
  2. G. Indebetouw, “Profile measurement using projection of running fringes,” Appl. Opt. 17, 2930–2933 (1978). [CrossRef] [PubMed]
  3. M. Takeda, K. Mutoh, “Fourier transform profilometry for the automatic measurement of 3-D object shape,” Appl. Opt. 22, 3977–3982 (1983). [CrossRef]
  4. V. Srinivasan, H. C. Liu, M. Halioua, “Automated phase-measuring profilometry of 3-D diffuse objects,” Appl. Opt. 23, 3105–3108 (1984). [CrossRef] [PubMed]
  5. M. Sjödahl, P. Synnergren, P. Johnson, “Applications of digital speckle photography in experimental mechanics,” in Lasers and Optics in Manufacturing, C. Gorecki, ed., Proc. SPIE3098, 195–203 (1997).
  6. M. Sjödahl, “Electronic speckle photography: increased accuracy by nonintegral pixel shifting,” Appl. Opt. 33, 6667–6673 (1994). [CrossRef] [PubMed]
  7. H. O. Saldner, J. M. Huntley, “Temporal phase unwrapping: application to surface profiling of discontinuous objects,” Appl. Opt. 36, 2770–2775 (1997). [CrossRef] [PubMed]
  8. H. O. Saldner, J. M. Huntley, “Profilometry using temporal phase unwrapping and a spatial light modulator-based fringe projector,” Opt. Eng. 36, 610–615 (1997). [CrossRef]
  9. P. Synnergren, “Measurement of three-dimensional displacement fields and shape using electronic speckle photography,” Opt. Eng. 36, 2302–2310 (1997). [CrossRef]
  10. M. Sjödahl, “Accuracy in electronic speckle photography,” Appl. Opt. 36, 2875–2885 (1997). [CrossRef] [PubMed]
  11. W. H. Press, B. P. Flannery, S. A. Teukolsky, W. T. Vetterling, Numerical Recipes in C, 2nd ed. (Cambridge University, Cambridge, England, 1992).
  12. H. H. Bailey, F. W. Blackwell, C. L. Lowery, J. A. Ratkovic, “Image correlation. Part I. Simulation and analysis,” (Rand Corporation, Santa Monica, Calif., 1976). 3

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.


Fig. 1 Fig. 2 Fig. 3
Fig. 4 Fig. 5

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited