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Proceedings Paper

New correlation coefficients designed for digital speckle correlation method (DSCM)
Author(s): Shao-peng Ma; Guan-chang Jin
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Paper Abstract

Digital speckle correlation method (DSCM) is based on the correlation-matching search algorithm, in which the correlation coefficient is used as a criterion for matching of two speckle patterns. The properties of the correlation coefficient affect the accuracy and the searching speed of DSCM. As many as ten different definitions of the correlation coefficient can be found in literatures but almost no comparison works are reported. In this paper, the different coefficient equations are compared and the properties of all these definitions are concluded. The comparison results may help to improve the development and application of DSCM in future. Some new correlation coefficients with better properties are then defined on the basis of the comparison.

Paper Details

Date Published: 29 April 2003
PDF: 9 pages
Proc. SPIE 5058, Optical Technology and Image Processing for Fluids and Solids Diagnostics 2002, (29 April 2003); doi: 10.1117/12.509382
Show Author Affiliations
Shao-peng Ma, Tsinghua Univ. (China)
Guan-chang Jin, Tsinghua Univ. (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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