Hongda Liu is currently pursuing the Ph.D. degree with Center for Research on Intelligent Perception and Computing (CRIPAC),National Laboratory of Pattern Recognition (NLPR), Institute of Automation, Chinese Academy of Sciences (CASIA), China. He received the B.S. degree in college of computer science and technology, Jilin University, China, in 2020. His research focuses on biometrics, computer vision, and deep learning.