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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 20 — Oct. 1, 2007
  • pp: 13167–13181

Color-encoded fringe projection for 3D shape measurements

Wei-Hung Su  »View Author Affiliations

Optics Express, Vol. 15, Issue 20, pp. 13167-13181 (2007)

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A novel technique using color-encoded stripes embedded into a sinusoidal fringe pattern for finding the absolute shape of an object is proposed. Phases of the projected fringes on the surface are evaluated by Fourier transform method. Unwrapping is then performed with reference to the color-encoded stripes. When surfaces of interest contain large depth discontinuities, the color-encoded stripes can easily identify the fringe order. Compared with other phase unwrapping schemes, this method offers many major advantages, including: (1) very low computation cost for the 3D reconstruction, (2) reliable phase unwrapping to complex objects, especially for surfaces with large depth discontinuities, (3) only one-shot measurement is required, and (4) robust performance to analyze dynamic objects.

© 2007 Optical Society of America

OCIS Codes
(110.6880) Imaging systems : Three-dimensional image acquisition
(120.4630) Instrumentation, measurement, and metrology : Optical inspection

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: August 13, 2007
Revised Manuscript: September 23, 2007
Manuscript Accepted: September 24, 2007
Published: September 26, 2007

Wei-Hung Su, "Color-encoded fringe projection for 3D shape measurements," Opt. Express 15, 13167-13181 (2007)

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