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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 5 — Mar. 11, 2013
  • pp: 5822–5832

3D absolute shape measurement of live rabbit hearts with a superfast two-frequency phase-shifting technique

Yajun Wang, Jacob I. Laughner, Igor R. Efimov, and Song Zhang  »View Author Affiliations

Optics Express, Vol. 21, Issue 5, pp. 5822-5832 (2013)

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This paper presents a two-frequency binary phase-shifting technique to measure three-dimensional (3D) absolute shape of beating rabbit hearts. Due to the low contrast of the cardiac surface, the projector and the camera must remain focused, which poses challenges for any existing binary method where the measurement accuracy is low. To conquer this challenge, this paper proposes to utilize the optimal pulse width modulation (OPWM) technique to generate high-frequency fringe patterns, and the error-diffusion dithering technique to produce low-frequency fringe patterns. Furthermore, this paper will show that fringe patterns produced with blue light provide the best quality measurements compared to fringe patterns generated with red or green light; and the minimum data acquisition speed for high quality measurements is around 800 Hz for a rabbit heart beating at 180 beats per minute.

© 2013 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
(320.7100) Ultrafast optics : Ultrafast measurements

ToC Category:
Imaging Systems

Original Manuscript: December 5, 2012
Revised Manuscript: February 15, 2013
Manuscript Accepted: February 22, 2013
Published: March 1, 2013

Virtual Issues
Vol. 8, Iss. 4 Virtual Journal for Biomedical Optics

Yajun Wang, Jacob I. Laughner, Igor R. Efimov, and Song Zhang, "3D absolute shape measurement of live rabbit hearts with a superfast two-frequency phase-shifting technique," Opt. Express 21, 5822-5832 (2013)

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