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- W2017391709 abstract "Digital image correlation method (DICM) as a flexible tool for deformation measurements has found widespread use in avariety of fields. One major challenge in practical applications, however, lies in that this technique founded on zeronormalizedcross-correlation (ZNCC) criterion is extremely time-consuming in correlation calculation. This paperintroduces the Hartley transform and a so-called global sum-table strategy to evaluate the cross-correlation term and alldouble sums in the ZNCC expression, which can dramatically reduce computational complexity of correlation searchingand therefore lead to significant computational savings. Both simulation tests and an actual example of displacementacquisition are employed to validate the feasibility and effectiveness of the fast algorithm, which indicates that it canimprove the efficiency of the DICM calculation by ~4-14 times in comparison with the conventional algorithm. This iscrucial for realizing a high-efficiency DICM to satisfy speed requirements for time-critical applications and large-scaledata processing." @default.
- W2017391709 created "2016-06-24" @default.
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- W2017391709 creator A5081424393 @default.
- W2017391709 date "2010-08-07" @default.
- W2017391709 modified "2023-09-23" @default.
- W2017391709 title "A fast digital image correlation algorithm based on Hartley transform and global sum-table scheme" @default.
- W2017391709 doi "https://doi.org/10.1117/12.866262" @default.
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