I am currently a Research Assistant in the Department of Computing at The Hong Kong Polytechnic University (PolyU). Starting September 2025, I will begin my PhD at PolyU, supervised by Prof. Lei Zhang. Previously, I received my B.Eng. from Harbin Institute of Technology and my M.Sc. from Peking University.
Research Interests
- Low-level computer vision. A major challenge in super-resolution is the uncontrollable artifacts stemming from its intrinsically ill-posed nature. I am particularly interested in how to exploit multi-frame information to generate higher-quality and controllable outputs from degraded inputs.
- Computational Imaging.I view imaging as a transformation from natural, continuous signals to discrete digital measurements. My focus is on how we sample the continuous world so that the resulting discrete data still permits faithful reconstruction of the underlying scene. Rethinking the sensing stage in this way can fundamentally reshape downstream processing pipelines such as super-resolution.
π₯ News
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*2025-09 New Start* β I will join VCLab at PolyU and work alongside many outstanding PhD students π.
π Publications
arxiv

One-Step Diffusion for Detail-Rich and Temporally Consistent Video Super-Resolution
Yujing Sun*, Lingchen Sun*, Shuaizheng Liu, Rongyuan Wu, Zhengqiang Zhang, Lei Zhang
* Equal contribution
- Propose a Dual LoRA Learning (DLoRAL) paradigm for Real-VSR.
ICCV 2023

Towards Real-World Burst Image Super-Resolution: Benchmark and Method
Pengxu Wei, Yujing Sun, Xingbei Guo, Chang Liu, Guanbin Li, Jie Chen, Xiangyang Ji, Liang Lin
- Establish a Real-world Burst SuperResolution benchmark, i.e., RealBSR
- Propose a Federated Burst Affinity network to address real-world burst image super-resolution.
π Honors and Awards
- National scholarship at Harbin Institute of Technology.
π Educations
- 2021.09 - 2024.06, Peking University, School of Electronic and Computer Engineering
- 2017.09 - 2021.06, Harbin Institute of Technology, School of Computer Science and Technology.
π» Internships
- 2025.01 - 2025.09, OPPO, China.