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Proceedings Paper

Digital image correlation with fast Fourier transform for large displacement measurement
Author(s): Anton A. Grebenyuk; Vladimir P. Ryabukho
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Paper Abstract

Digital image correlation is an effective non-contact optical tool for full-field displacement and strain measurements. It is used for objects testing, elastic parameters evaluation, flows control, etc. One of the main challenges of practical realization of DIC is the computation time. In this paper a method of computing digital image correlation with fast Fourier transform algorithm is proposed. Unlike the usual FFT cross correlation algorithm, the proposed method allows for reduction the computation time of large displacements DIC measurements with retaining the accuracy of spatial domain correlation.

Paper Details

Date Published: 12 April 2011
PDF: 5 pages
Proc. SPIE 7999, Saratov Fall Meeting 2010: Optical Technologies in Biophysics and Medicine XII, 79990B (12 April 2011); doi: 10.1117/12.887673
Show Author Affiliations
Anton A. Grebenyuk, Saratov State Univ. (Russian Federation)
Vladimir P. Ryabukho, Saratov State Univ. (Russian Federation)
Institute of Precision Mechanics and Control (Russian Federation)


Published in SPIE Proceedings Vol. 7999:
Saratov Fall Meeting 2010: Optical Technologies in Biophysics and Medicine XII
Valery V. Tuchin; Elina A. Genina, Editor(s)

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