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Applied Optics

Applied Optics


  • Vol. 33, Iss. 34 — Dec. 1, 1994
  • pp: 7829–7837

Fourier-transform speckle profilometry: three-dimensional shape measurements of diffuse objects with large height steps and/or spatially isolated surfaces

Mitsuo Takeda and Hirokazu Yamamoto  »View Author Affiliations

Applied Optics, Vol. 33, Issue 34, pp. 7829-7837 (1994)

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An interferometric technique for automated profilometry of diffuse objects has been proposed. It is based on the Fourier-fringe analysis of spatiotemporal specklegrams produced by a wavelength-shift interferometer with a laser diode as a frequency-tunable light source. Unlike conventional moiré techniques the proposed technique permits the objects to have discontinuous height steps and/or surfaces spatially isolated from one another. Experimental results are presented that demonstrate the validity of the principle.

© 1994 Optical Society of America

Original Manuscript: January 19, 1994
Revised Manuscript: June 14, 1994
Published: December 1, 1994

Mitsuo Takeda and Hirokazu Yamamoto, "Fourier-transform speckle profilometry: three-dimensional shape measurements of diffuse objects with large height steps and/or spatially isolated surfaces," Appl. Opt. 33, 7829-7837 (1994)

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