@article{opticalflowtechniquesforfacialexpression,
  title = {Optical Flow Techniques for Facial Expression Analysis -- a Practical Evaluation Study},
  author = {Benjamin Allaert and Isaac Ronald Ward and Ioan Marius Bilasco and Chaabane Djeraba and Mohammed Bennamoun},
  year = {2019},
  eprint = {1904.11592},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1904.11592v3},
}