Luo Lin, Shengwei Qin, Zilong Wu, Bingquan Xu. Facial expression recognition in video sequence based on LBP feature and GRU. In ICVIP 2021: The 5th International Conference on Video and Image Processing, Hayward, CA, USA, December 22 - 25, 2021. pages 38-43, ACM, 2021. [doi]