@article{directionalpointnet3denvironmental,
  title = {Directional PointNet: 3D Environmental Classification for Wearable Robotics},
  author = {Kuangen Zhang and Jing Wang and Chenglong Fu},
  year = {2019},
  eprint = {1903.06846},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1903.06846v2},
}