@article{unsupervisedlearningfacialparameter,
  title = {Unsupervised Learning Facial Parameter Regressor for Action Unit Intensity Estimation via Differentiable Renderer},
  author = {Xinhui Song and Tianyang Shi and Zunlei Feng and Mingli Song and Jackie Lin and Chuan-Jie Lin and Changjie Fan and Yi Yuan},
  year = {2020},
  eprint = {2008.08862},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2008.08862v1},
}