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Proceedings Paper

Digital Image Correlation Of White Light Speckle Including The Effects Of Image Distortion
Author(s): W. F. Ranson; M. A. Sutton; W. H. Peters
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Paper Abstract

An image correlation theory of white light speckle is presented which describes the light intensity as a continuous function for both the reference and deformed images. The reference image is divided into small regions corresponding to small subimages of the object surface. The subimage forms the basic element of the process of image correlation. The subimage of the undeformed intensity pattern is mapped to the deformed surface in order to compare its location to a corresponding location on the deformed intensity surface. This mapping function mathematically translates, rotates and deforms small subimages until the best fit is obtained with the recorded data. The following is thus obtained: (1) translation, (2) rotation, and (3) deformation.

Paper Details

Date Published: 25 November 1985
PDF: 10 pages
Proc. SPIE 0556, Intl Conf on Speckle, (25 November 1985); doi: 10.1117/12.949536
Show Author Affiliations
W. F. Ranson, University of South Carolina (United States)
M. A. Sutton, University of South Carolina (United States)
W. H. Peters, University of South Carolina (United States)

Published in SPIE Proceedings Vol. 0556:
Intl Conf on Speckle
Henri H. Arsenault, Editor(s)

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