An experimental study of camera sensor noise propagation to displacement maps obtained by DIC

Benoît Blaysat 1 Michel Grediac 1 Frédéric Sur 2
2 MAGRIT - Visual Augmentation of Complex Environments
Inria Nancy - Grand Est, LORIA - ALGO - Department of Algorithms, Computation, Image and Geometry
Abstract : The predictive formula of resolution displacement maps obtained using Digital Image Correlation tools are revisited and validated in this paper. Indeed, the usual formula available in the literature does not take into account the DIC required sub-pixel interpolation. Moreover, a noiseless DIC tangent operator is defined to also minimise noise propagation from images to displacement maps. These points are now taken into account in the proposed update of the predictive formula. The experimental validation is then done, it is shown that specific image pre-processing tools are required. Usual raw images are indeed corrupted by noise and consequently do not satisfy assumptions needed for predictive formula elaboration. Thanks to the pre-process presented here, image noise properties are corrected, thus assumptions of the predictive formula are satisfied and the prediction is validated.
Type de document :
Communication dans un congrès
Photomechanics, May 2015, Delft, Netherlands. 2015
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https://hal.inria.fr/hal-01163323
Contributeur : Frédéric Sur <>
Soumis le : vendredi 12 juin 2015 - 15:37:09
Dernière modification le : jeudi 11 janvier 2018 - 06:25:23

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  • HAL Id : hal-01163323, version 1

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Benoît Blaysat, Michel Grediac, Frédéric Sur. An experimental study of camera sensor noise propagation to displacement maps obtained by DIC. Photomechanics, May 2015, Delft, Netherlands. 2015. 〈hal-01163323〉

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