Chongyi Li



📍 ABN-02b-11, NTU, SG
📧lichongyi25 at gmail.com
[GitHub] [DBLP]
[Google Scholar]


Homepage

Publications

Datasets

Welcome to Chongyi Li (李重仪)'s Homepage


I am an incoming Full Professor with the School of Computer Science, Nankai University, China.

2021/10 - , I am a Research Assistant Professor with the School of Computer Science and Engineering, Nanyang Technological University (NTU), Singapore.

2020/01 - 2021/10, I was a research fellow at the MMLab@NTU, S-Lab, and worked with Dr. Chen Change Loy, School of Computer Science and Engineering, Nanyang Technological University (NTU), Singapore.

2018/10 - 2020/01, I was a postdoctoral fellow and worked with Chair Prof. Sam Kwong (IEEE Fellow), Department of Computer Science, City University of Hong Kong (CityU), Kowloon, Hong Kong.

2016/12 - 2017/12, I was a joint Ph.D. student at Research School of Engineering, Australian National University (ANU), Canberra, Australia, under the supervision of Prof. Fatih Porikli (IEEE Fellow).

2014/09 - 2018/07, I was a Ph.D. student at School of Electrical and Information Engineering, Tianjin University (TJU), Tianjin, China, under the supervision of Prof. Jichang Guo.


IJCV Special Issue
Special Issue on Mobile Intelligent Photography and Imaging
Chongyi Li, Mauricio Delbracio, Jinwei Gu, and Chen Change Loy
CFP







Open Positions:


I am looking for PhD students and Master students who want to conduct research and develop advanced deep learning algorithms for image and video enhancement and restoration, computational imaging, and image signal processor to join my research group at Nankai University (2023 Fall or 2024 Fall). I am also recruiting Research Associates and Final Year Project students.





Recent News:

  • 2023/05 --One paper got accepted by TCSVT.
  • 2023/05 --I am nominated with honor to serve as an Area Chair for NeurIPS 2023 Datasets and Benchmarks.
  • 2023/05 --Our paper 'Bayesian Retinex Underwater Image Enhancement' has been recognized as Paper Prize Award 2023-Application by Engineering Applications of Artificial Intelligence.
  • 2023/05 --One paper got accepted by TNNSL.
  • 2023/05 --I am recognized as Outstanding Reviewer, CVPR 2023
  • 2023/05 --We release the code (BeautyREC) and dataset (BeautyFace).
  • 2023/04 --We release the code (UHDFour) and dataset (UHD-LL) of our ICLR 2023 work.
  • 2023/04 --Excited to announce one paper got accepted by ICML 2023 and was selected as Oral.
  • 2023/04 --Two papers got accepted by CVPR NTIRE Workshop 2023.
  • 2023/03 --Excited to announce two papers were selected as CVPR 2023 Highlight, 10% of accepted papers, 2.5% of submissions!
  • 2023/03 --Two papers have been recognized as ESI Highly Cited Paper
  • 2023/03 --Five papers got accepted by CVPR 2023.
  • 2023/02 --Elevated to the grade of IEEE Senior Member!
  • 2023/02 --We thank IEEE Signal Processing Society SPS Blog. for highlighting our IEEE TIP'2020 work, An Underwater Image Enhancement Benchmark Dataset and Beyond, as one of SPS's top-25 most downloaded articles on IEEE Xplore®, 2021-2022
  • 2023/02 --We organize a special issue on Mobile Intelligent Photography and Imaging in International Journal of Computer Vision (IJCV). (Paper submission deadline: 1 June 2023)
  • 2023/01 --Excited to announce one paper has been accepted by ICLR 2023 as Oral, notable-top-5%!
  • 2023/01 --Excited to announce one paper has been accepted by AAAI 2023 as Oral!
  • 2023/01 --I am nominated with honor to serve as an Associate Editor of IEEE Transactions on Circuits and Systems for Video Technology (IF: 5.859).


Selected Publications:


Iterative Prompt Learning for Unsupervised Backlit Image Enhancement
2023
Zhexin Liang, Chongyi Li, Shangchen Zhou, Ruicheng Feng, and Chen Change Loy.
PDF| Project Page| Code







Fourmer: An Efficient Global Modeling Paradigm for Image Restoration
ICML, 2023 [Oral]
Man Zhou, Jie Huang, Chunle Guo, and Chongyi Li+.
PDF| Project Page| Code







Nighttime Smartphone Reflective Flare Removal Using Optical Center Symmetry Prior
CVPR, 2023 [Highlight]
Yuekun Dai, Yihang Luo, Shangchen Zhou, Chongyi Li+, and Chen Change Loy.
PDF| Project Page| Code







DNF: Decouple and Feedback Network for Seeing in the Dark
CVPR, 2023 [Highlight]
Xin Jin, Linghao Han, Zhen Li, Zhi Chai, Chunle Guo, and Chongyi Li.
PDF| Project Page| Code





RIDCP: Revitalizing Real Image Dehazing via High-Quality Codebook Priors
CVPR, 2023
Ruiqi Wu, Zhengpeng Duan, Chunle Guo, Zhi Chai, and Chongyi Li.
PDF| Project Page| Code







Learning Semantic-Aware Knowledge Guidance for Low-Light Image Enhancement
CVPR, 2023
Yuhui Wu, Chen Pan, Guoqing Wang, Yang Yang, Jiwei Wei, Chongyi Li, and Hengtao Shen.
PDF| Project Page| Code







Generating Aligned Pseudo-Supervision from Non-Aligned Data for Image Restoration in Under-Display Camera
CVPR, 2023
Ruicheng Feng, Chongyi Li, Huaijin Chen, Shuai Li, Jinwei Gu, and Chen Change Loy.
PDF| Project Page| Code







Embedding Fourier for Ultra-High-Definition Low-Light Image Enhancement
ICLR, 2023 [Oral]
Chongyi Li, Chunle Guo, Man Zhou, Zhexin Liang, Shangchen Zhou, Ruicheng Feng, and Chen Change Loy.
PDF| Project Page| Code| Dataset







Underwater Ranker: Learn Which Is Better and How to Be Better
AAAI, 2023 [Oral]
Chunle Guo, Ruiqi Wu, Xin Jin, Linghao Han, Zhi Chai, Weidong Zhang, and Chongyi Li+.
PDF| Project Page| Code





CuDi: Curve Distillation for Efficient and Controllable Exposure Adjustment
2023
Chongyi Li, Chunle Guo, Ruicheng Feng, Shangchen Zhou, and Chen Change Loy.
PDF| Project Page| Code







BeautyREC: Robust, Efficient, and Content-preserving Makeup Transfer
CVPRW, 2023
Qixin Yan, Chunle Guo, Jixin Zhao, Yuekun Dai, Chen Change Loy, and Chongyi Li+.
PDF| Project Page| Code





FlexiCurve: Flexible Piecewise Curves Estimation for Photo Retouching
CVPRW, 2023
Chongyi Li, Chunle Guo, Shangchen Zhou, Qiming Ai, Ruicheng Feng, and Chen Change Loy.
PDF| Project Page| Code









Towards Robust Blind Face Restoration with Codebook Lookup Transformer
NeurIPS, 2022
Shangchen Zhou, Kelvin C. K. Chan, Chongyi Li, and Chen Change Loy.
PDF| Project Page| Code| Video| Colab





Deep Fourier Up-Sampling
NeurIPS, 2022 [Spotlight]
Man Zhou, Hu Yu, Jie Huang, Feng Zhao, Jinwei Gu, Chen Change Loy, Deyu Meng, and Chongyi Li+.
PDF| Project Page| Code



Panchromatic and Multispectral Image Fusion via Alternating Reverse Filtering Network
NeurIPS, 2022 [Spotlight]
Keyu Yan, Man Zhou, Jie Huang, Chengjun Xie, Feng Zhao, Chongyi Li, Danfeng Hong.
PDF| Project Page| Code





Flare7K: A Phenomenological Nighttime Flare Removal Dataset
NeurIPS, 2022
Yuekun Dai, Chongyi Li, Shangchen Zhou, Ruicheng Feng, and Chen Change Loy.
PDF| Project Page| Dataset| Video







LEDNet: Joint Low-light Enhancement and Deblurring in the Dark
ECCV, 2022
Shangchen Zhou, Chongyi Li, Chen Change Loy.
PDF| Project Page| Code| Dataset| Replicate





Image Dehazing Transformer with Transmission-Aware 3D Position Embedding
CVPR, 2022
Chunle Guo, Qixin Yan, Saeed Anwar, Runmin Cong, Wenqi Ren, and Chongyi Li+.
PDF| Project Page| Code





Adaptively Learning Low-high Frequency Information Integration for Pan-sharpening
ACM MM, 2022
Man Zhou, Jie Huang, Chongyi Li+, Hu Yu, Keyu Yan, Naishan Zheng, and Feng Zhao.
PDF| Project Page| Code





Normalization-based Feature Selection and Restitution for Pan-sharpening
ACM MM, 2022
Man Zhou, Jie Huang, Keyu Yan, Gang Yang, Aiping Liu, Chongyi Li, and Feng Zhao.
PDF| Project Page| Code





Underwater Image Enhancement with Hyper-Laplacian Reflectance Priors
TIP, 2022 [TIP Popular Articles]
Peixian Zhuang, Jiamin Wu, Fatih Porikli, and Chongyi Li+.
PDF| Project Page| Code









CIR-Net: Cross-modality Interaction and Refinement for RGB-D Salient Object Detection
TIP, 2022
Runmin Cong, Qinwei Lin, Chen Zhang, Chongyi Li+, Xiaochun Cao, Qingming Huang, and Yao Zhao.
PDF| Project Page| Code





Removing Diffraction Image Artifacts in Under-Display Camera via Dynamic Skip Connection Network
CVPR, 2021
Ruicheng Feng, Chongyi Li, Huaijin Chen, Shuai Li, Chen Change Loy, Jinwei Gu.
PDF| Project Page| Code





Low-Light Image and Video Enhancement Using Deep Learning: A Survey
TPAMI, 2021 [ESI Highly Cited Paper]
Chongyi Li, Chunle Guo, Linghao Han, Jun Jiang, Ming-Ming Cheng, Jinwei Gu, Chen Change Loy.
PDF| Project Page| Collection| Dataset













Zero-Reference Deep Curve Estimation for Low-Light Image Enhancement
CVPR, 2020
Chunle Guo, Chongyi Li, Jichang Guo, Chen Change Loy, Junhui Hou, Sam Kwong, Runmin Cong.
PDF| Project Page| Code





RGB-D Salient Object Detection with Cross-Modality Modulation and Selection
ECCV, 2020
Chongyi Li, Runmin Cong, Yongri Piao, Qianqian Xu, Chen Change Loy.
PDF| Project Page| Code

















CoADNet: Collaborative Aggregation-and-Distribution Networks for Co-Salient Object Detection
NeurIPS, 2020
Qijian Zhang, Runmin Cong, Junhui Hou, Chongyi Li, and Yao Zhao.
PDF| Project Page| Code









Hierarchical Features Driven Residual Learning for Depth Map Super-Resolution
TIP, 2019
Chunle Guo, Chongyi Li+, Jichang Guo, Runmin Cong, Huazhu Fu, Ping Han.
PDF| Project Page| Code









Events:

Mobile Intelligent Photography & Imaging
2nd MIPI workshop @ CVPR 2023
Chongyi Li, Shangchen Zhou, Ruicheng Feng, Yuekun Dai, Qingpeng Zhu, Qianhui Sun, Wenxiu Sun, Chen Change Loy, and Jinwei Gu.
Website





Try Your Face (face restoration platform) We provide our code of CodeFormer (Towards Robust Blind Face Restoration with Codebook Lookup TransFormer) on Colab. Please feel free to try your face.
Colab






Low-Light Image Enhancement Online Platform Different algorithms demand various configurations, GPU versions, and hardware specifications that are prohibitive to beginners who are new to this area and may not even have GPU resources. We contribute an online plateform.
Website






Mobile Intelligent Photography & Imaging
1st MIPI workshop @ ECCV 2022
Chongyi Li, Shangchen Zhou, Ruicheng Feng, Jun Jiang, Wenxiu Sun, Qingyu Yang, Qingpeng Zhu, Chen Change Loy, and Jinwei Gu.
Website





  • [Workshop] ECCV 2022 Workshop on Mobile Intelligent Photography and Imaging (MIPI)
  • [Special Session] IEEE MMSP 2022 Special Session on Underwater Multimedia Processing
  • [Special Issue] Frontiers in Signal Processing Special Issue on Multimodal Intelligence
  • [Special Issue] IEEE Journal of Oceanic Engineering Special Issue on Advanced Machine Learning Methodologies for Underwater Image and Video Processing and Analysis (2021-2022)
  • [Special Issue] Multimedia Tools and Applications Special Issue on Depth-Related Processing and Applications in Visual Systems (2020-2021)
  • [Special Issue] Signal Processing : Image Communication Special Issue on Visual Information Processing for Underwater Images and Videos: Theories, Algorithms, and Applications (2019-2020)
  • [Special Session] APSIPA ASC 2019 Special Session on Multi-source Data Processing and Analysis: Models, Methods and Applications (2019-2020)


Honors & Awards:

  • IEEE Signal Processing Society's top-25 most downloaded articles on IEEE Xplore®, Sept. 2021 - Sept. 2022.
  • Pattern Recognition (Elsevier Journal) (Best Paper Honourable Mention)
  • Engineering Applications of Artificial Intelligence (Elsevier Journal) (Paper Prize Award 2023 - Application)
  • Our team Feedforward won the second runner-up (3/317) in MegCup Efficient Model for Blind Denoising. Congrats to Xin Jin, Ruiqi Wu, and Zhen Li. The code is publicly available here.
  • World’s Top 2% Scientists (2022). It is compiled by Stanford University based on the standardized citation indicators (Table_1_Authors_singleyr_2021_pubs_since_1788_wopp_extracted_202209), which is avaiable online at Mendeley Database.
  • World’s Top 2% Scientists (2021). It is compiled by Stanford University based on the standardized citation indicators (Table_1_Authors_singleyr_2020_wopp_extracted_202108), which is avaiable online at Mendeley Database.
  • CVPR (Outstanding Reviewer in 2023). PDF
  • ECCV (Outstanding Reviewer in 2022). PDF
  • ICCV (Outstanding Reviewer in 2021). PDF
  • CVPR (Outstanding Reviewer in 2021). PDF
  • IEEE Journal of Oceanic Engineering (Outstanding Reviewer in 2021) News
  • Distinguished Dissertation Award of Beijing Society of Image and Graphics, 2018. Media


Professional Service:


    Memberships
    2023/02- : IEEE Senior Member

    Associate Editor
    2023/01- : IEEE Transactions on Circuits and Systems for Video Technology (IF: 5.859)
    2022/05- : IEEE Journal of Oceanic Engineering (IF: 3.554)
    2022/01- : Neurocomputing (IF: 5.719)
    2021/01- : Springer Journal of Signal, Image and Video Processing (IF: 1.794)

    Guest Editor
    International Journal of Computer Vision (Lead Guest Editor) (IF: 13.369)
    IEEE Journal of Oceanic Engineering (Lead Guest Editor) (IF: 3.554)
    Signal Processing: Image Communication (Management Guest Editor) (IF:2.779)
    Multimedia Tools and Applications (IF: 2.313)
    Frontiers in Signal Processing

    Area Chair
    NeurIPS 2023 Datasets and Benchmarks
    BMVC 2022

    Co-organizer
    2nd CVPR Workshop on Mobile Intelligent Photography & Imaging (MIPI) 2023
    1st ECCV Workshop on Mobile Intelligent Photography & Imaging (MIPI) 2022
    IEEE Workshop on Multimedia Signal Processing (MMSP) 2022

    Senior Program Committee (Meta-Reviewers)
    AAAI 2022, 2023


Supervision and Teaching:

  • Ph.D.: Haoying Li (Zhejiang University), Visiting Scholar: Old Films Restoration, NTU, 08/2022-present, Co-supervised with Cavan
  • M.E.: Jixin Zhao (Tianjin University), Intern: Video Denoising, NTU, 08/2022-present, Co-supervised with Cavan
  • B.E.: Yihang Luo (Nanyang Technological University), Intern: Nighttime Ghost Removal, NTU, 08/2022-present, Co-supervised with Cavan
  • M.E.: Zhexin Liang (Zhejiang University), AI Major Project: Backlit Image Enhancement, NTU, 01/2022-present, Co-supervised with Cavan
  • M.E.: Yuekun Dai (Peking University), AI Major Project: Nighttime Flare Removal, NTU, 08/2021-present, Co-supervised with Cavan
  • Ph.D.: Jingming He (Shenzhen University), Underwater Object Detection, CityU, Co-supervised with Shiqi and Sam
  • Ph.D.: Fuzhao Ou (Guangzhou University), Face Image Quality Assessment, CityU, Co-supervised with Shiqi and Sam
  • Teaching Assistant, NTU CE6126: MSAI Advanced Computer Vision, NTU, Fall 2020


Alumni:

  • Zurang Liu (Beijing University of Posts and Telecommunications), Project: Deep Image Harmonization, AI Master@NTU, 01/2021-04/2022, Now: Engineer@ByteDance, SG, Co-supervised with Cavan
  • Sihao Chen, Project: Learning to See in the Dark [Final Report--Video (A+)], FYP of Computer Science@NTU, 06/2020-06/2021, Now: Engineer@Shopee, SG. Sihao's project is awarded the 2021 Global Undergraduate Awards for his entry 'Learning to See in the Dark - Low Light Image Enhancement'. [The Global Undergraduate Awards][NTU News]Co-supervised with Cavan
  • Qiming Ai (University of Science and Technology of China), Project: Deep Photo Enhancement, AI Master@NTU, 01/2020-12/2020, Co-supervised with Cavan
  • M.E.: Xingshu Wang (Beijing University of Posts and Telecommunications), Project: Reference-Based Image Super-Resolution, ANU, Co-supervised with Saeed
  • M.E.: Yuheng Shi (Nanjing University of Posts and Telecommunications), Project: Hand Gesture Recognition, ANU, Co-supervised with Saeed


Miscellaneous: