About Me

I am a Ph.D. student at VIU Lab, Johns Hopkins University. I obtained my bachelor's degree from Dept. of Computer Science, University of Illinois at Urbana-Champaign in May, 2020. During my three years at UIUC, I have fortunately conducted research at Image Formation and Processing Group. I also have spent some fun time interning at Adobe (2022), Microsoft (2021) and Horizon Robotics (2019).
My research helps people produce creative and artistic visual effects with ease (Neural Rendering), see a clear world through digital lens (Super-Resolution), and improve personalized experiences with protected privacy (Federated Learning).


  • [06/2023] Pyramid Attention Network is accepted by IJCV.
  • [02/2023] One paper accepted by CVPR2023.
  • [09/2022] One paper accepted by NeurIPS2022.
  • [03/2022] One paper accepted by CVPR2022.
  • [06/2021] Code and pretrained models for NLSN (CVPR2021) have been released at GitHub.
  • [03/2021] One paper accepted by CVPR2021.
  • [09/2020] One paper accepted by NeurIPS2020.
  • [06/2020] We have released all the training/testing code and pretrained models for CSNLN (CVPR2020) at GitHub.
  • [03/2020] One paper accepted by CVPR2020 and ICME2020, respectively.

Current and Past Affiliations

2021 - present

Summer 2022 - May 2023

Spring 2021

2017 - 2020

Summer 2019

Publications & Preprints

LightPainter: Interactive Portrait Relighting with Freehand Scribble

Yiqun Mei, He Zhang, Xuaner Zhang, Jianming Zhang, Zhixin Shu, Yilin Wang, Zijun Wei, Shi Yan, HyunJoon Jung, Vishal M. Patel


Resource-Adaptive Federated Learning with All-In-One Neural Composition

Yiqun Mei, Pengfei Guo, Mo Zhou, Vishal M. Patel


Escaping Data Scarcity for High-Resolution Heterogeneous Face Hallucination

Yiqun Mei*, Pengfei Guo*, Vishal M. Patel

CVPR2022 (Oral)

Image Super-Resolution with Non-Local Sparse Attention

Yiqun Mei, Yuchen Fan, Yuqian Zhou


Neural Sparse Representation for Image Restoration

Yuchen Fan, Jiahui Yu, Yiqun Mei, Yulun Zhang, Yun Fu, Ding Liu, Thomas S. Huang


Pyramid Attention Network for Image Restoration

Yiqun Mei, Yuchen Fan, Yulun Zhang, Jiahui Yu, Yuqian Zhou, Ding Liu, Yun Fu, Thomas S. Huang, Humphrey Shi

International Journal of Computer Vision (IJCV 2023, arXiv 2020)

Image Super-Resolution with Cross-Scale Non-Local Attention and Exhaustive Self-Exemplars Mining

Yiqun Mei, Yuchen Fan, Yuqian Zhou, Lichao Huang, Thomas S. Huang, Humphrey Shi

CVPR 2020