Ruixu Geng | HKU WeLight Lab

Research

My research is in multimodal computational imaging and sensing, particularly in complementing optics with modalities such as mmWave and acoustics.

• Non-line-of-sight (NLOS) imaging — seeing around corners by inverting faint, diffusely scattered light (TIP'22 TIP'25 ICASSP'25 ICME'25)

• mmWave radar imaging — high-resolution imaging where cameras cannot go: calibration, reconstruction, adversarial robustness (TMC'26 TIFS'26 TIFS'25 TIP'24 COMST'25)

• Human-centric and biomedical sensing — vital signs and activity buried in clutter, increasingly by fusing radio with vision (Nature Comm.'25 ICCV'25 CVPR'26 ICLR'25)

News

08/2026

I will serve as a TPC Member and give an Invited Talk at CITA 2026.

08/2026

I co-hosted the USTC-HKU Joint Research Seminar on AI-empowered Scientific Imaging & Visual Computing at HKU.

06/2026

Our paper A Survey of Wireless Sensing Security From a Role-Based View was selected by IEEE ComSoc for Best Readings in Wireless Information Forensics & Security.

06/2026

One paper about physical adversarial attack defense for mmWave radar sensing was accepted by IEEE TIFS.

05/2026

I am serving as an Area Chair for ICCP 2026.

03/2026

I am delighted to join Welight@HKU as a Postdoctoral Fellow, advised by Prof. Yifan (Evan) Peng.

02/2026

One paper about automatic phase calibration for high-resolution mmWave imaging was accepted by IEEE TMC.

02/2026

One paper about CLIP-driven vision-radio person re-identification was accepted by CVPR. Huge congrats and thanks to Rui Zhang!

12/2025

I received my Ph.D. degree from USTC. Huge thanks to my advisor Prof. Yan Chen.

08/2025

One paper about wireless sensing security was accepted by IEEE COMST (IF=46.7).

06/2025

One paper about video-radar remote physiological measurement was accepted by ICCV. Huge congrats and thanks to Qiang Liang!

05/2025

One paper about mmWave radar-based atrial fibrillation detection was accepted by Nature Communications. Huge congrats to Yuqin Yuan and Jinbo Chen!

05/2025

One paper about adversarial attacks against mmWave radar imaging was accepted by IEEE TIFS.

03/2025

One paper about passive non-line-of-sight imaging was accepted by ICME. Huge congrats and thanks to Yi Wang!

Selected Publications

TMC 2026

Automatic Phase Calibration for High-Resolution MmWave Sensing Via Ambient Radio Anchors

R. Geng, Y. Li, D. Zhang, P. Huang, B. Wang, B. Zhang, Z. Lu, H. Yang, Y. Chen

TIFS 2026

mmGuard: A Countermeasure against Physical Adversarial Attacks on mmWave Radar Sensing

R. Geng, D. Zhang, Y. Li, J. Wang, Q. Liang, R. Zhang, X. Xu, Z. Lu, Y. Hu, Y. Chen

COMST 2025 ★ ComSoc Best Readings

A Survey of Wireless Sensing Security From a Role-Based View

R. Geng*, J. Wang*, Y. Yuan, F. Zhan, T. Zhang, R. Zhang, P. Huang, D. Zhang, J. Chen, Y. Hu, Y. Chen

TIFS 2025

Attacking mmWave Imaging with Neural Meta-Material Rendering

R. Geng, D. Zhang, Y. Li, Z. Wu, J. Li, Q. Chen, Y. Hu, Y. Chen

Nature Comm. 2025

Atrial Fibrillation Detection via Contactless Radio Monitoring and Knowledge Transfer

Y. Yuan*, J. Chen*, D. Zhang, R. Geng, H. Gong, G. Xu, Y. Pu, Z. Lu, Y. Hu, D. Zhang, L. Ma, Q. Sun, Y. Chen

ICCV 2025

Spatial Alignment and Temporal Matching Adapter for Video-Radar Remote Physiological Measurement

Q. Liang, R. Geng, J. Chen, H. Wang, Y. Chen, Y. Hu

TIP 2025

Passive Non-Line-of-Sight Imaging with Light Transport Modulation

J. Zhang, R. Geng, X. Du, Y. Chen, H. Li, Y. Hu

ICLR 2025

RFMamba: Frequency-Aware State Space Model for RF-Based Human-Centric Perception

R. Zhang, R. Geng, Y. Li, R. Song, H. Gong, D. Zhang, Y. Hu, Y. Chen

TIP 2024

DREAM-PCD: Deep Reconstruction and Enhancement of mmWave Radar Point Cloud

R. Geng, Y. Li, D. Zhang, J. Wu, Y. Gao, Y. Hu, Y. Chen

TMC 2024

IFNet: Deep Imaging and Focusing for Handheld SAR With Millimeter-Wave Signals

Y. Li, D. Zhang, R. Geng, J. Wu, Y. Hu, Q. Sun, Y. Chen

TIP 2022

Passive Non-Line-of-Sight Imaging Using Optimal Transport

R. Geng, Y. Hu, Z. Lu, C. Yu, H. Li, H. Zhang, Y. Chen

View Full Publication List on Google Scholar

Awards & Honors

2017, 2018, 2025

National Scholarship — Top 3% nationally, Ministry of Education of China

2019

Outstanding Graduate of Sichuan Province — Top 3%, awarded for academic excellence

Academic Services

Area Chair / TPC Member

ICCP 2026 (Area Chair), CITA 2026 (TPC Member)

Journal Reviewer

IEEE Transactions on Image Processing (TIP), IEEE Transactions on Mobile Computing (TMC), IEEE Transactions on Computational Imaging (TCI), IEEE Transactions on Automation Science and Engineering (TASE), IEEE Robotics and Automation Letters (RA-L), Scientific Reports, Optics Letters, Chinese Optics Letters, Photonic Sensors

Conference Reviewer

CVPR (2026), ECCV (2026), ICCP (2026), ICLR (2025-2027), NeurIPS (2026), AAAI (2026-2027), ACM MM (2023-2026), ISMAR (2026), ICME (2025-2026), IROS (2024), IEEE AVSS (2025)

Teaching Assistant

Internet of Things and Security (IS400101), Fall 2023, USTC

Mentoring

I've been lucky to work closely with talented MS students: Yating Gao (USTC MS → Osaka University PhD), Jiarui Zhang (USTC MS → Meituan), Xiaolong Du (USTC MS → Alibaba), Jincheng Wu (USTC MS → ByteDance)

Community Resource

Recent Advances on Non-Line-of-Sight Imaging

A living survey I maintain — 210+ curated NLOS imaging papers spanning 2008–2026, organized by physical model, sensing modality, and learning paradigm.