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Short remarks about synthetic image generation in the context of sub-pixel accuracy of Digital Image Correlation

Abstract : In order to characterise the ultimate error regime of Digital Image Correlation (DIC) algorithms, sets of virtual transformed images are often generated from a reference image by in-plane sub-pixel translations. This leads to the determination of the well-known S-shaped systematic error curves and their corresponding random error curves. It is reported in this collaborative work that the a priori choices used to numerically shift images (grey level interpolation, direct or reverse transformation between images) modify DIC results and may lead to biased conclusions in terms of DIC errors.
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https://hal.archives-ouvertes.fr/hal-00836213
Contributor : François Gibier <>
Submitted on : Thursday, June 20, 2013 - 3:58:52 PM
Last modification on : Tuesday, August 4, 2020 - 8:14:24 AM

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  • HAL Id : hal-00836213, version 1

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Michel Bornert, Pascal Doumalin, Jean-Christophe Dupré, Christophe Poilâne, Laurent Robert, et al.. Short remarks about synthetic image generation in the context of sub-pixel accuracy of Digital Image Correlation. ICEM15, Jul 2012, Porto, Portugal. 4 p. ⟨hal-00836213⟩

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