Ruixu Geng | HKU WeLight Lab

Research

My research focuses on computational imaging and sensing. I develop advanced imaging systems that can "see around corners" and perceive the world through radio waves. My recent works explore:

• Non-line-of-sight (NLOS) imaging — reconstructing hidden objects from indirect light reflections (TIP'22 TIP'25 ICASSP'25 ICME'25)

• mmWave radar imaging — high-resolution imaging and sensing using millimeter-wave signals (TMC'26 TIFS'26 TIFS'25 TIP'24 CVPR'26)

• Biomedical and human-centric sensing — applying computational sensing to healthcare and human perception (Nature Comm.'25 ICLR'25 ICCV'25)

News

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

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

ICCP 2026

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

ECCV (2026), CVPR (2026), ICCP (2026), ISMAR (2026), ICLR (2025-2026), ACM MM (2023-2026), 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)