Roy Yuchen HE
Department of Mathematics, City University of Hong Kong. Tat Chee Avenue, Kowloon, Hong Kong SAR
Department of Mathematics
City University of Hong Kong
Tat Chee Avenue, Kowloon, Hong Kong SAR
Roy He holds a Ph.D. in Mathematics from the Georgia Institute of Technology (GT Sigma Xi Best Thesis Award, 2021; advisor: Prof. Sung Ha Kang), an M.A. in Statistics from Columbia University, and a B.Sc. with Honours from Chongqing University. In 2020, he was a visiting researcher at École Normale Supérieure Paris-Saclay under Prof. Jean-Michel Morel. In 2021, he was appointed as a postdoctoral researcher at Duke University under Prof. Hongkai Zhao; due to COVID-related travel restrictions, he concurrently served as a postdoctoral researcher at the Shanghai Jiao Tong University Institute of Natural Sciences under Prof. Xiaoqun Zhang. He joined City University of Hong Kong as an Assistant Professor in the Department of Mathematics in 2023.
His research lies at the intersection of applied mathematics, scientific computing, and machine learning, with a focus on:
- Variational and statistical image processing — segmentation, decomposition, reconstruction, and color enhancement
- Data-driven mathematical modeling — identification of differential equations from observed trajectory data
- Mathematical computer graphics — image vectorization and geometric representations
- Numerical PDE and optimization — non-convex optimization, primal-dual algorithms, and operator splitting methods
- Deep learning theory and applications — theoretical foundations and applications in computer vision and inverse problems
