@article{hopchistogramoforientedprincipal,
  title = {HOPC: Histogram of Oriented Principal Components of 3D Pointclouds for Action Recognition},
  author = {Hossein Rahmani and Arif Mahmood and Du. Q. Huynh and Ajmal Mian},
  year = {2014},
  eprint = {1408.3809},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1408.3809v4},
}