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Proceedings Paper

Ray casting method for integral calculation of computational flow imaging
Author(s): Yingchuan Wu; Jialing Le; Anzhi He
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Paper Abstract

Computational flow imaging (CFI) uses theoretical predictions of the interaction and transmission of optical waves through theoretical flowfield to generate digital pictures that simulate real observations, but the phase data produced by interferometric, Schlieren or shadow graph is the result of the integration of the refractive index or refractive index or refractive index gradient along the line-of-sight. The goal of this research is to develop a fast, efficeint ray casting method for integral calculation of computational flow imaging. We use a preprocessing procedure that the whole flow region is divided into new regular blocks in which the voxels are distributed by x and y coordinates to increase the processing speed. The algorithms are generally enough to handle non-convex, curvilinear or irregular grids and cells and grids constructed from multiple grids of CFD solutions.

Paper Details

Date Published: 29 April 2003
PDF: 8 pages
Proc. SPIE 5058, Optical Technology and Image Processing for Fluids and Solids Diagnostics 2002, (29 April 2003); doi: 10.1117/12.509786
Show Author Affiliations
Yingchuan Wu, China Aerodynamic Research and Development Ctr. (China)
Jialing Le, China Aerodynamic Research and Development Ctr. (China)
Anzhi He, Nanjing Univ. of Science and Technology (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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