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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 17 — Aug. 13, 2012
  • pp: 19493–19510

High-speed three-dimensional profilometry for multiple objects with complex shapes

Chao Zuo, Qian Chen, Guohua Gu, Shijie Feng, and Fangxiaoyu Feng  »View Author Affiliations

Optics Express, Vol. 20, Issue 17, pp. 19493-19510 (2012)

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This paper describes an easy-to-implement three-dimensional (3-D) real-time shape measurement technique using our newly developed high-speed 3-D vision system. It employs only four projection fringes to realize full-field phase unwrapping in the presence of discontinuous or isolated objects. With our self-designed pattern generation hardware and a modified low-cost DLP projector, the four designed patterns can be generated and projected at a switching speed of 360 Hz. Using a properly synchronized high-speed camera, the high-speed fringe patterns distorted by measured objects can be acquired and processed in real-time. The resulting system can capture and display high-quality textured 3-D data at a speed of 120 frames per second, with the resolution of 640 × 480 points. The speed can be trebled if a camera with a higher frame rate is employed. We detail our shape measurement technique, including the four-pattern decoding algorithm as well as the hardware design. Some evaluation experiments have been carried out to demonstrate the validity and practicability of the proposed technique.

© 2012 OSA

OCIS Codes
(110.6880) Imaging systems : Three-dimensional image acquisition
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(150.6910) Machine vision : Three-dimensional sensing

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: June 11, 2012
Revised Manuscript: July 13, 2012
Manuscript Accepted: August 2, 2012
Published: August 10, 2012

Chao Zuo, Qian Chen, Guohua Gu, Shijie Feng, and Fangxiaoyu Feng, "High-speed three-dimensional profilometry for multiple objects with complex shapes," Opt. Express 20, 19493-19510 (2012)

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