Divergence-Free Motion Estimation

@inproceedings{Herlin2012DivergenceFreeME,
  title={Divergence-Free Motion Estimation},
  author={Isabelle L. Herlin and Dominique B{\'e}r{\'e}ziat and Nicolas Mercier and Sergiy M. Zhuk},
  booktitle={ECCV},
  year={2012}
}
This paper describes an innovative approach to estimate motion from image observations of divergence-free flows. Unlike most state-of-the-art methods, which only minimize the divergence of the motion field, our approach utilizes the vorticity-velocity formalism in order to construct a motion field in the subspace of divergence free functions. A 4DVAR-like image assimilation method is used to generate an estimate of the vorticity field given image observations. Given that vorticity estimate, the… 
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