👋 About Me

I am Zexin Feng, a Ph.D. student at the Mobility Transformation Lab, The University of Hong Kong (HKU), Hong Kong SAR, China, supervised by Prof. Xintao Yan. My research interests include Physical AI, Autonomous Driving, and Machine Learning.

Previously, I earned my B.Eng. in Computer Science from the Southern University of Science and Technology (SUSTech), Shenzhen, China (expected June 2025). During my undergraduate studies, I was a long-term member of the iMED Intelligent Medical Imaging Lab led by Prof. Jiang Liu, and I also worked with Prof. Xiaohui Xie at the University of California, Irvine on AI for healthcare.

If you are interested in my work, please contact me at zexinfeng@connect.hku.hk or mark4551124015@outlook.com.

📖 Educations

  • Southern University of Science and Technology (SUSTech)
    • B.Eng. in Computer Science*, 09/2022 - 06/2025
  • The University of Hong Kong (HKU)
    • PhD Student, 09/2025 - Present

🔬 Research

Physical AI & Robot Manipulation

Copper-Policy: Focus on the Representation for Robust Robot Manipulation

Zexin Feng, Y. Feng, L. Xiao, S. Su, K. Zheng, C. Xu, M. Shi, S. Feng, X. Yan

arXiv · Project Page · GitHub · Hugging Face

  • A compact world representation learned jointly with the policy for robust robot manipulation.

Generative Simulation & Autonomous Driving

PIH: Physical-intrinsic Harmonizer for Editable Neural Reconstruction Lingyu Xiao, Haowei Sun, Lingxuan Zhou, Jiawei Wang, Zexin Feng, Jun Gao, Xintao Yan. Preprint, 2026.

Project Page

  • A physical-intrinsic harmonization method for temporally consistent neural-rendered driving scenes, with illumination control and virtual asset insertion.
ECCV 2026

Long-term Traffic Simulation via Structured Autoregressive Modeling Lingyu Xiao, Zexin Feng, Xintao Yan. ECCV 2026.

arXiv · Project Page · GitHub

  • A structured autoregressive simulator for long-term traffic rollouts with joint motion and agent generation, together with retrieval-based traffic evaluation.
CVPR 2026 · SAD Workshop
Eight collision events spanning low to high severity

Beyond Binary Metrics: Unveiling the Safety Illusion in Autonomous Driving Simulation

Zexin Feng, Lingyu Xiao, Xintao Yan. CVPR 2026 Workshop on Simulation for Autonomous Driving (SAD).

Paper · Project Page

  • Composite Collision Metric (CCM) measures collision severity and tail risk beyond binary collision indicators.

Medical Imaging

ICASSP 2024
ICASSP 2024

Flattening Singular Values of Factorized Convolution for Medical Images

Zexin Feng, N. Zeng, J. Fang, X. Wang, X. Lu, H. Meng, J. Liu

Conference

  • Proposed SFConv for efficient CNN optimization, achieving 98% parameter compression while maintaining performance on public datasets.

🔥 News

  • 2026.06:  🎉 Long-term Traffic Simulation via Structured Autoregressive Modeling was accepted to ECCV 2026. Project Page
  • 2026.03:  🎉 Beyond Binary Metrics: Unveiling the Safety Illusion in Autonomous Driving Simulation was accepted to the CVPR 2026 Workshop on Simulation for Autonomous Driving (SAD). Project Page
  • 2024.04:  🎉 Flattening Singular Values of Factorized Convolution for Medical Images was accepted to ICASSP 2024.

🎖 Honors and Awards

  • Best Undergraduate Thesis Award (2025), for outstanding research performance.
  • Best Graduate Student Award (2025).
  • BYD Scholarship (2024).
  • China National Scholarship (2024), Top 0.2%.
  • School Motto Scholarship “Truth” Special Award (2024), awarded to students with outstanding academic performance.
  • Outstanding Student (2023), Top 20%.
  • Best Progress Award (2022), recognizing significant academic improvement.

🛠️ PROJECTS

🧑‍🏫 Teaching

  • Student Lecturer for C Programming Assisting Course
    SUSTech, CSE, Spring 2024
    Shenzhen, China

  • Student Assistant for CS305 Computer Networks
    SUSTech, CSE, Fall 2023
    Shenzhen, China

💻 Experience

  • Mobility Transformation Lab, The University of Hong Kong, Hong Kong SAR, China
    PhD Student, supervised by Prof. Xintao Yan. (09/2025-Present)

  • iMED Intelligent Medical Imaging, Shenzhen, China
    Undergraduate Research Assistant, supervised by Prof. Jimmy Liu (05/2023-09/2023)

  • Xiaohui Xie’s Lab, UC Irvine, USA
    Undergraduate Research Assistant, supervised by Prof. Xiaohui Xie (09/2024-01/2025)