3D optical flow computation using a parallel variational multigrid scheme with application to cardiac C-arm CT motion

@article{Kalmoun20073DOF,
  title={3D optical flow computation using a parallel variational multigrid scheme with application to cardiac C-arm CT motion},
  author={El Mostafa Kalmoun and Harald K{\"o}stler and Ulrich R{\"u}de},
  journal={Image Vision Comput.},
  year={2007},
  volume={25},
  pages={1482-1494}
}
Motivated by recent applications to 3D medical motion estimation, we consider the problem of 3D optical flow computation in real time. The 3D optical flow model is derived from a straightforward extension of the 2D Horn–Schunck model and discretized using standard finite differences. We compare memory costs and convergence rates of four numerical schemes: Gauss–Seidel and multigrid with three different strategies of coarse grid operators discretization: direct coarsening, lumping and Galerkin… CONTINUE READING
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