@article{fan2021three,
  title     = {Three-filters-to-normal: An accurate and ultrafast surface normal estimator},
  author    = {Fan, Rui and Wang, Hengli and Xue, Bohuan and Huang, Huaiyang and Wang, Yuan and Liu, Ming and Pitas, Ioannis},
  journal   = {IEEE Robotics and Automation Letters},
  volume    = {6},
  number    = {3},
  pages     = {5405--5412},
  year      = {2021},
  publisher = {IEEE},
  doi       = {10.1109/LRA.2021.3067308}
}