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HTTP/2 200 server: GitHub.com content-type: text/html; charset=utf-8 last-modified: Tue, 09 Dec 2025 06:03:32 GMT access-control-allow-origin: * etag: W/"6937bbb4-882f" expires: Tue, 30 Dec 2025 08:38:34 GMT cache-control: max-age=600 content-encoding: gzip x-proxy-cache: MISS x-github-request-id: 4AAD:2BC55:9D450E:B0A3B8:69538D32 accept-ranges: bytes age: 0 date: Tue, 30 Dec 2025 08:28:35 GMT via: 1.1 varnish x-served-by: cache-bom-vanm7210036-BOM x-cache: MISS x-cache-hits: 0 x-timer: S1767083315.826843,VS0,VE209 vary: Accept-Encoding x-fastly-request-id: a26c484fe285e479e409d45abb81ab39e38df24f content-length: 7583 Renjie Group

Renjie Group

At Renjie Group, we pursue the research topics that we find most inspiring and meaningful.

We have several Ph.D. openings at this moment. If you want to work with us in the future, please feel free to drop us an email. All emails/CVs are carefully read and evaluated. Only matched candidates will be responded.

Our Current Research Interests

Digital Copyright Protection
Neural Representation
Image Processing
AI Security

Principal Investigator

Renjie Wan

Assistant Professor

Department of Computer Science

Hong Kong Baptist University

Email: wanpeoplejie [at] gmail (dot) com

Google Scholar / XiaoHongShu / HKBU Scholars / ORCiD

Renjie Wan is an Assistant Professor at the Department of Computer Science of Hong Kong Baptist University.

He obtained his Ph.D. degree from Nanyang Technological University in 2019 supervised by Prof. Alex Kot.

Before joining HKBU, he was a Wallenberg-NTU Presidential Postdoctoral Fellow of Nanyang Technological University from 2020 to 2022.

Group Members

Ph.D. Students

Ziyuan Luo (Fall 2022)
Qi Song (Fall 2023)
Ruofei Wang (Fall 2023)
Xiufeng Huang (Fall 2023)
Haoliang Han (Fall 2024)
Yingjie Lu (Fall 2025)
Yangyi Zhao (Fall 2025)

Research Assistants

Xianzu Wu

Alumni

Xuanning Cui (Visiting student from PKU)
Langxi Huang (RA, then to CityU for Ph.D.)

Teaching

COMP3057: Introduction to AI and ML, Fall 2025, HKBU
COMP3065: AI Application Development, Spring 2023/2024/2025, HKBU
COMP7035: Python for Data Analysis and Artificial Intelligence, Fall 2022/2023/2024/2025, HKBU

Our Selected Publications

2026

Creating Blank Canvas Against AI-enabled Image Forgery

Qi Song, Ziyuan Luo, Renjie Wan*

AAAI 2026

GS-Checker: Tampering Localization for 3D Gaussian Splatting

Haoliang Han, Ziyuan Luo, Jun Qi, Anderson Rocha, Renjie Wan*

AAAI 2026

2025

MantleMark: Migrating Watermarks from Multi-View Images to Radiance Fields via Frequency Modulation

Ziyuan Luo, Jun Liu, Haoliang Li, Anderson Rocha, Renjie Wan*

IEEE Transactions on Information Forensics and Security (TIFS), 2025

Protecting Visual Datasets from Unauthorized Retrieval-Augmented Image Generation

Ziyuan Luo, Yangyi Zhao, Ka Chun Cheung, Simon See, Renjie Wan*

NeurIPS 2025 / Project Page with Paper and Code

Align 3D Representation and Text Embedding for 3D Content Personalization

Qi Song, Ziyuan Luo, Ka Chun Cheung, Simon See, Renjie Wan*

ACM MM 2025 / Project Page with Paper and Code

MarkSplatter: Generalizable Watermarking for 3D Gaussian Splatting Model via Splatter Image Structure

Xiufeng Huang, Ziyuan Luo, Qi Song, Ruofei Wang, Renjie Wan*

ACM MM 2025 / Project Page with Paper and Code

Stereo-GS: Multi-View Stereo Vision Model for Generalizable 3D Gaussian Splatting Reconstruction

Xiufeng Huang, Ka Chun Cheung, Runmin Cong, Simon See, Renjie Wan*

ACM MM 2025 / Project Page with Paper and Code

Asynchronous Event Error-Minimizing Noise for Safeguarding Event Dataset

Ruofei Wang, Peiqi Duan, Boxin Shi, Renjie Wan*

ICCV 2025 (Highlight) / Project Page with Paper and Code

The NeRF Signature: Codebook-Aided Watermarking for Neural Radiance Fields

Ziyuan Luo, Anderson Rocha, Boxin Shi, Qing Guo, Haoliang Li, Renjie Wan*

IEEE TPAMI 2025 / Project Page with Paper and Code

Meme Trojan: Backdoor Attacks Against Hateful Meme Detection via Cross-Modal Triggers

Ruofei Wang, Hongzhan Lin, Ziyuan Luo, Ka Chun Cheung, Simon See, Jing Ma, Renjie Wan*

AAAI 2025 (Oral) / Project Page with Paper and Code

2024

Geometry Cloak: Preventing TGS-based 3D Reconstruction from Copyrighted Images

Qi Song, Ziyuan Luo, Ka Chun Cheung, Simon See, Renjie Wan*

NeurIPS 2024 / Project Page with Paper and Code

GaussianMarker: Uncertainty-Aware Copyright Protection of 3D Gaussian Splatting

Xiufeng Huang, Ruiqi Li, Yiu-ming Cheung, Ka Chun Cheung, Simon See, Renjie Wan*

NeurIPS 2024 / Project Page with Paper and Code

Event Trojan: Asynchronous Event-based Backdoor Attacks

Ruofei Wang, Qing Guo, Haoliang Li, Renjie WAN*

ECCV 2024 / Project Page with Paper and Code

Imaging Interiors: An Implicit Solution to Electromagnetic Inverse Scattering Problems

Ziyuan Luo, Boxin Shi, Haoliang Li, Renjie WAN*

ECCV 2024 / Project Page with Paper and Code

GeometrySticker: Enabling Ownership Claim of Recolorized Neural Radiance Fields

Xiufeng Huang, Ka Chun Cheung, Simon See, Renjie WAN*

ECCV 2024 / Project Page with Paper and Code

Protecting NeRFs' Copyright via Plug-And-Play Watermarking Base Model

Qi Song, Ziyuan Luo, Ka Chun Cheung, Simon See, Renjie WAN*

ECCV 2024 / Project Page with Paper and Code

Unsupervised Domain Adaptation for Low-dose CT Reconstruction via Bayesian Uncertainty Alignment

Kecheng Chen, Jie Liu, Renjie WAN*, Victor Ho-Fun Lee, Varut Vardhanabhuti, Hong Yan, Haoliang Li*

IEEE TNNLS 2024 / Project Page with Paper and Code

Neural Underwater Scene Representation

Yunkai Tang, Chengxuan Zhu, Renjie WAN*, Chao Xu, Boxin Shi*

CVPR 2024 / Project Page with Paper and Code

Colorizing Monochrome Radiance Fields

Yean Cheng, Renjie WAN*, Shucheng Weng, Chengxuan Zhu, Yakun Chang, Boxin Shi*

AAAI 2024 (Oral) / Project Page with Paper and Code

2023

CopyRNeRF: Protecting the CopyRight of Neural Radiance Fields

Ziyuan Luo, Qing Guo, Ka Chun Cheung, Simon See, Renjie Wan*

ICCV 2023 / Project Page with Paper and Code

Cross-Image Disentanglement for Low-Light Enhancement in Real World

Lanqing Guo, Renjie Wan, Wenhan Yang, Alex Kot, Bihan Wen

TCSVT 2023 / Code

Occlusion-Free Scene Recovery via Neural Radiance Fields

Chengxuan Zhu, Renjie Wan, Yunkai Tang, Boxin Shi

CVPR 2023 / Paper / Project Page with Code

Coarse-to-fine Disentangling Demoiring Framework for Recaptured Screen Images

Ce Wang, Bin He, Shengsen Wu, Renjie Wan, Boxin Shi, Ling-Yu Duan

TPAMI 2023

2022

Purifying Low-light Images via Near-Infrared Enlightened Image

Renjie Wan, Boxin Shi, Wenhan Yang, Bihan Wen, Ling-Yu Duan, Alex C. Kot

TMM 2022 / Paper

Neural Transmitted Radiance Fields

Chengxuan Zhu, Renjie Wan, Boxin Shi

NeurIPS 2022 / Paper / Project Page

Benchmarking Single Image Reflection Removal Algorithms

Renjie Wan, Boxin Shi, Haoliang Li, Yuchen Hong, Ling-Yu Duan, Alex C. Kot

TPAMI 2022 / Paper / Project Page

Low-Light Image Enhancement with Normalizing Flow

Yufei Wang, Renjie Wan*, Wenhan Yang, Haoliang Li, Lap-Pui Chau, Alex C. Kot

AAAI2022 / Paper / Project webpage

Learning Meta Pattern for Face Anti-Spoofing

Rizhao Cai, Zhi Li, Renjie Wan, Haoliang Li, Yongjian Hu, Alex C. Kot

IEEE Transactions on Information Forensics & Security, 2022

Early Papers

Face Image Reflection Removal

Renjie Wan, Boxin Shi, Haoliang Li, Ling-Yu Duan, Alex C. Kot

International Journal of Computer Vision 2020

CoRRN: Cooperative Reflection Removal Network

Renjie Wan, Boxin Shi, Haoliang Li, Ling-Yu Duan, Ah-Hwee Tan, Alex C. Kot

TPAMI 2019 / Dataset / Code

CRRN: Multi-Scale Guided Concurrent Reflection Removal Network

Renjie Wan, Boxin Shi, Ling-Yu Duan, Ah-Hwee Tan, Alex C. Kot

CVPR 2018 / Paper

Region-Aware Reflection Removal with Unified Content and Gradient Priors

Renjie Wan, Boxin Shi, Ling-Yu Duan, Ah-Hwee Tan, Gao Wen, Alex C. Kot

IEEE Transactions on Image Processing 2018 / Paper

Benchmarking Single-Image Reflection Removal Algorithms

Renjie Wan, Boxin Shi, Ling-Yu Duan, Ah-Hwee Tan, Alex C. Kot

International Conference on Computer Vision 2017 / Paper

Depth of field guided reflection removal

Renjie Wan, Boxin Shi, Ah-Hwee Tan, Alex C. Kot

International Conference on Image Processing 2016 / Code

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