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Proceedings Paper

Digital holography particle image velocimetry for 3D flow measurement
Author(s): Runjie Wei; Gongxin Shen; Hanquan Ding
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Paper Abstract

A digital in-line holography recording system was used in the holography particle image velocimetry for a 3D flow measurement that are made up of the new full field fluid mechanics experimental technique--DHPIV. In this experiment, the traditional holography film was replaced by a CCD chip that record the interference stripe directly without the darkroom processing, and the virtual image slices in different position were reconstructed by compuation using Fresnel-Kirchhoff integral from the digital image. Also, complex field signal filter was applied in image reconstruction to achieve the thin depth of image field that has strong effecting with the vertical velocity component resolution. Using the frame-straddle CCD techniques, the 3D velocity was computed by 3D cross-correlation through space interrogation block matching through the reconstructed image slices with digital complex field signal filter. Then the 3D velocity, vortex, iso-surface details and the time evolution movie in a 3D flow field were displayed by numerical computation and experimental measurement using this DHPIV method.

Paper Details

Date Published: 29 April 2003
PDF: 12 pages
Proc. SPIE 5058, Optical Technology and Image Processing for Fluids and Solids Diagnostics 2002, (29 April 2003); doi: 10.1117/12.509498
Show Author Affiliations
Runjie Wei, Beijing Univ. of Aeronautics and Astronautics (China)
Gongxin Shen, Beijing Univ. of Aeronautics and Astronautics (China)
Hanquan Ding, Beijing Univ. of Aeronautics and Astronautics (China)


Published in SPIE Proceedings Vol. 5058:
Optical Technology and Image Processing for Fluids and Solids Diagnostics 2002
Gong Xin Shen; Soyoung S. Cha; Fu-Pen Chiang; Carolyn R. Mercer, Editor(s)

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