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Proceedings Article

Digital image correlation with fast Fourier transform for large displacement measurement

[+] Author Affiliations
Anton A. Grebenyuk

Saratov State Univ. (Russian Federation)

Vladimir P. Ryabukho

Saratov State Univ. (Russian Federation) and Institute of Precision Mechanics and Control (Russian Federation)

Proc. SPIE 7999, Saratov Fall Meeting 2010: Optical Technologies in Biophysics and Medicine XII, 79990B (April 11, 2011); doi:10.1117/12.887673
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From Conference Volume 7999

  • Saratov Fall Meeting 2010: Optical Technologies in Biophysics and Medicine XII
  • Valery V. Tuchin; Elina A. Genina
  • Saratov, Russian Federation | October 05, 2010

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.

© (2010) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Anton A. Grebenyuk and Vladimir P. Ryabukho
"Digital image correlation with fast Fourier transform for large displacement measurement", Proc. SPIE 7999, Saratov Fall Meeting 2010: Optical Technologies in Biophysics and Medicine XII, 79990B (April 11, 2011); doi:10.1117/12.887673; http://dx.doi.org/10.1117/12.887673


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