Optical flow for incompressible turbulence motion estimation

Abstract : We propose in this paper a new formulation of optical flow dedicated to 2D incompressible turbulent flows. It consists in minimizing an objective function constituted by an observation term and a regularization one. The observation term is based on the transport equation of the passive scalar field. For non-fully resolved scalar images, we propose to use the mixed model in large eddy simulation to determine the interaction between large scales and unresolved ones. The regularization term is based on the continuity equation of 2D incompressible flows. Compared to prototypical method, this regularizer preserves more vortex structures by eliminating constraints over the vorticity field. The evaluation of the proposed formulation is done over synthetic and experimental images, and the improvements in term of estimation are discussed.
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Experiments in fluids, Springer Verlag, 2015, to be published. <10.1007/s00348-014-1874-6>
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https://hal.archives-ouvertes.fr/hal-01102944
Contributeur : Thomas Corpetti <>
Soumis le : mardi 13 janvier 2015 - 17:21:57
Dernière modification le : samedi 17 juin 2017 - 01:19:19
Document(s) archivé(s) le : vendredi 11 septembre 2015 - 06:41:37

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Xu Chen, Pascal Zillé, Liang Shao, Thomas Corpetti. Optical flow for incompressible turbulence motion estimation. Experiments in fluids, Springer Verlag, 2015, to be published. <10.1007/s00348-014-1874-6>. <hal-01102944>

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