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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 34 — Dec. 1, 2012
  • pp: 8081–8089

Volume moiré tomography based on double cross gratings for real three-dimensional flow field diagnosis

Nan Sun, Yang Song, Jia Wang, Zhen-Hua Li, and An-Zhi He  »View Author Affiliations


Applied Optics, Vol. 51, Issue 34, pp. 8081-8089 (2012)
http://dx.doi.org/10.1364/AO.51.008081


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Abstract

Since the advantages of noncontact, strong antidisturbing capability and wide measurement range, moiré tomography has been considered a powerful diagnostic tool for flow fields. In this paper, the volume computerized tomography is introduced to obtain the real three-dimensional reconstruction based on moiré deflectometry. In order to realize volume moiré tomography (VMT), double cross gratings are applied in the moiré deflected system to gain the shearing phase distribution of the moiré deflected projection in two mutually perpendicular directions simultaneously. Thus, the scalar diffraction theory is used for analyzing the imaging process of VMT based on double cross gratings to achieve the explicit form of shearing phase. Finally, the real temperature distribution of a propane flame is reconstructed, which can confirm the VMT method.

© 2012 Optical Society of America

OCIS Codes
(050.1960) Diffraction and gratings : Diffraction theory
(070.6760) Fourier optics and signal processing : Talbot and self-imaging effects
(100.6950) Image processing : Tomographic image processing
(110.6960) Imaging systems : Tomography
(120.4120) Instrumentation, measurement, and metrology : Moire' techniques

ToC Category:
Diffraction and Gratings

History
Original Manuscript: August 15, 2012
Revised Manuscript: October 12, 2012
Manuscript Accepted: October 18, 2012
Published: November 27, 2012

Virtual Issues
Vol. 8, Iss. 1 Virtual Journal for Biomedical Optics

Citation
Nan Sun, Yang Song, Jia Wang, Zhen-Hua Li, and An-Zhi He, "Volume moiré tomography based on double cross gratings for real three-dimensional flow field diagnosis," Appl. Opt. 51, 8081-8089 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-34-8081


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