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Optical Engineering

New reconstruction algorithm for moiré tomography in flow field measurements
Author(s): Bin Zhang; Song Yang; Yizhong Song; Anzhi He
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Paper Abstract

A new iterative reconstruction algorithm is developed and applied to moiré deflection tomography for flow field measurements. The algorithm is derived from the basic deflection formula and based on a modified algebraic reconstruction technique. The precision and convergence of the algorithm are analyzed through a numerical simulation. To capture multidirectional projection data, a rotatable deflectometric system is developed. The efficacy of the new algorithm is assessed by reconstructing an asymmetric temperature field. Furthermore, the algorithm is employed to investigate the image of a cross section of a free jet containing steep gradients and to reconstruct the density field of the rocket exhausted jet.

Paper Details

Date Published: 1 November 2006
PDF: 8 pages
Opt. Eng. 45(11) 117002 doi: 10.1117/1.2395922
Published in: Optical Engineering Volume 45, Issue 11
Show Author Affiliations
Bin Zhang, Nanjing Univ. of Science & Technology (China)
Song Yang, Nanjing Univ. of Science & Technology (China)
Yizhong Song, Nanjing Univ. of Science & Technology (China)
Anzhi He, Nanjing Univ. of Science & Technology (China)

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