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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 51, Iss. 12 — Apr. 20, 2012
  • pp: 2062–2069

Single-shot color fringe projection for three-dimensional shape measurement of objects with discontinuities

Meiling Dai, Fujun Yang, and Xiaoyuan He  »View Author Affiliations


Applied Optics, Vol. 51, Issue 12, pp. 2062-2069 (2012)
http://dx.doi.org/10.1364/AO.51.002062


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Abstract

A simple but effective fringe projection profilometry is proposed to measure 3D shape by using one snapshot color sinusoidal fringe pattern. One color fringe pattern encoded with a sinusoidal fringe (as red component) and one uniform intensity pattern (as blue component) is projected by a digital video projector, and the deformed fringe pattern is recorded by a color CCD camera. The captured color fringe pattern is separated into its RGB components and division operation is applied to red and blue channels to reduce the variable reflection intensity. Shape information of the tested object is decoded by applying an arcsine algorithm on the normalized fringe pattern with subpixel resolution. In the case of fringe discontinuities caused by height steps, or spatially isolated surfaces, the separated blue component is binarized and used for correcting the phase demodulation. A simple and robust method is also introduced to compensate for nonlinear intensity response of the digital video projector. The experimental results demonstrate the validity of the proposed method.

© 2012 Optical Society of America

OCIS Codes
(100.2650) Image processing : Fringe analysis
(110.6880) Imaging systems : Three-dimensional image acquisition
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology

ToC Category:
Image Processing

History
Original Manuscript: December 6, 2011
Revised Manuscript: December 23, 2011
Manuscript Accepted: January 2, 2012
Published: April 18, 2012

Citation
Meiling Dai, Fujun Yang, and Xiaoyuan He, "Single-shot color fringe projection for three-dimensional shape measurement of objects with discontinuities," Appl. Opt. 51, 2062-2069 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-12-2062


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