@article{aspectralopticalflowmethodfor,
  title = {A spectral optical flow method for determining velocities from digital imagery},
  author = {Neal Hurlburt and Steve Jaffey},
  year = {2015},
  eprint = {1504.04660},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1504.04660v1},
}