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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 53, Iss. 24 — Aug. 20, 2014
  • pp: 5283–5289

Three-dimensional trace measurements for fast-moving objects using binary-encoded fringe projection techniques

Wei-Hung Su, Cho-Yo Kuo, and Fu-Jen Kao  »View Author Affiliations

Applied Optics, Vol. 53, Issue 24, pp. 5283-5289 (2014)

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A fringe projection technique to trace the shape of a fast-moving object is proposed. A binary-encoded fringe pattern is illuminated by a strobe lamp and then projected onto the moving object at a sequence of time. Phases of the projected fringes obtained from the sequent measurements are extracted by the Fourier transform method. Unwrapping is then performed with reference to the binary-encoded fringe pattern. Even though the inspected object is colorful, fringe orders can be identified. A stream of profiles is therefore retrieved from the sequent unwrapped phases. This makes it possible to analyze physical properties of the dynamic objects. Advantages of the binary-encoded fringe pattern for phase unwrapping also include (1) reliable performance for colorful objects, spatially isolated objects, and surfaces with large depth discontinuities; (2) unwrapped errors only confined in a local area; and (3) low computation cost.

© 2014 Optical Society of America

OCIS Codes
(110.6880) Imaging systems : Three-dimensional image acquisition
(120.4630) Instrumentation, measurement, and metrology : Optical inspection
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(100.5088) Image processing : Phase unwrapping
(110.2650) Imaging systems : Fringe analysis

ToC Category:
Imaging Systems

Original Manuscript: May 9, 2014
Revised Manuscript: July 12, 2014
Manuscript Accepted: July 13, 2014
Published: August 12, 2014

Wei-Hung Su, Cho-Yo Kuo, and Fu-Jen Kao, "Three-dimensional trace measurements for fast-moving objects using binary-encoded fringe projection techniques," Appl. Opt. 53, 5283-5289 (2014)

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