About
Hongruixuan Chen is RIKEN SPDR Fellow at Geoinformatics Team, RIKEN AIP. He received his Ph.D. from the Machine Learning and Statistical Data Analysis Lab at The University of Tokyo, where he was fortunate to be supervised by Prof. Naoto Yokoya. He serves as co-lead of WG-MIA within the Image Analysis and Data Fusion Technical Committee (IADF TC). He was also an academic visitor at the Photogrammetry and Remote Sensing Group, ETH Zurich, and a former intern at The United Nations Satellite Center (UNOSAT).
His research uses machine learning and computer vision to make sense of multi-sensor Earth observation data. The work covers multi-sensor data interpretation, EO-specialized architectures, and label-efficient training, with foundation models for geoscience as a more recent thread. Applications span disaster response, land-cover mapping, urban planning, and environmental monitoring.
News
- 2026.05BRIGHT and HyperSIGMA have been awarded as ESI Hot Paper.
- 2026.05Our review paper Earth Observation for Disaster Mapping: Benchmarks, Methods, Challenges and Future Perspectives is online now (link).
- 2026.05One paper has been accepted by ISPRS J P&RS.
- 2026.05Nominated as a judge for the Outstanding Student and PhD candidate Presentation Awards at EGU26.
- 2026.04Joined RIKEN AIP as a RIKEN Special Postdoctoral Researcher (基礎科学特別研究員).
- 2026.03We launched the BRIGHT Challenge at CVPR 2026 MONTI (link).
- 2026.03Awarded the UTokyo President's Award. I am grateful to Prof. Naoto Yokoya for his continuous guidance and support.
- 2026.02Three papers have been accepted by CVPR 2026 (link 1, link 2, link 3).
- 2026.02One paper has been accepted by ISPRS J P&RS (link).
- 2026.01One paper has been accepted by JAG (link).
- 2026.01One paper has been accepted by IEEE TPAMI (link).
- 2025.12Two papers have been accepted by ISPRS J P&RS (link 1, link 2).
- 2025.11BRIGHT has been accepted by ESSD (link).
- 2025.10One paper has been accepted by NeurIPS 2025 (link).
- 2025.09Appointed as Co-Lead of Working Group on Machine/Deep Learning for Image Analysis (WG-MIA) of IEEE GRSS (link).
- 2025.08OpenEarthMap-SAR has been accepted by IEEE GRSM (link).
- 2025.08One paper has been accepted by ISPRS J P&RS (link).
- 2025.07I successfully passed my Ph.D. defense. Many thanks to everyone who supported me along the way.
- 2025.01BRIGHT and OpenEarthMap-SAR serve as the official datasets of IEEE GRSS Data Fusion Contest 2025 (link).
- 2024.09SynRS3D selected as Spotlight (top 3.1%) at NeurIPS 2024 (link).
- 2024.07Two oral presentations (SAM-MapCD, OpenEarthMap Benchmark) at IGARSS 2024.
- 2024.06ChangeMamba has been accepted by IEEE TGRS (link).
- 2024.06ObjFormer has been accepted by IEEE TGRS (link).
- 2024.04Awarded the JSPS Research Fellowship for Young Scientists (DC2), selection ratio 17.1%.
- 2024.03Co-organised the OpenEarthMap Land Cover Mapping Few-Shot Challenge at CVPR Workshop 2024.
- 2024.01Started a six-month academic visit at the Photogrammetry & Remote Sensing Group, ETH Zürich.
Selected Papers
Multimodal remote sensing change detection: An image matching perspective
ISPRS Journal of Photogrammetry and Remote Sensing, 2026
Earth System Science Data (ESSD), 2025
IEEE Data Fusion Contest 2025ESI Hot PaperESI Highly Cited Paper
ChangeMamba: Remote sensing change detection with spatio-temporal state space model
IEEE Transactions on Geoscience and Remote Sensing (TGRS), 2024
ESI Hot PaperESI Highly Cited Paper
Fourier domain structural relationship analysis for unsupervised multimodal change detection
ISPRS Journal of Photogrammetry and Remote Sensing, 2023
ESI Highly Cited Paper
ISPRS Journal of Photogrammetry and Remote Sensing, 2023
Experience
Work & Overseas Experience
2026.04 – NowRIKEN SPDR Research Fellow, Geoinformatics Team, RIKEN AIP — Host: Prof. Naoto Yokoya
2025.09 – 2026.03JSPS Research Fellow, The University of Tokyo — Host: Prof. Naoto Yokoya
2024.10 – 2025.09Research Part-time Worker, Geoinformatics Team, RIKEN AIP — Host: Prof. Naoto Yokoya
2024.01 – 2024.07Academic Visitor, Photogrammetry & Remote Sensing Group, ETH Zurich — Host: Prof. Konrad Schindler
2023.05 – 2024.01Research Part-time Worker, Geoinformatics Team, RIKEN AIP — Host: Prof. Naoto Yokoya
2022.11 – 2023.03Research Assistant, Beyond AI, The University of Tokyo — Host: Prof. Masashi Sugiyama
2021.05 – 2022.05Trainee, United Nations Satellite Centre (UNOSAT) — Host: Mr. Lars Bromley, Mr. Edoardo Nemni
Education
2022.10 – 2025.09Ph.D., Graduate School of Frontier Sciences, The University of Tokyo — Supervisor: Prof. Naoto Yokoya
2019.09 – 2022.06M.E., LIESMARS, Wuhan University — Supervisors: Prof. Chen Wu, Prof. Bo Du, Prof. Liangpei Zhang
2015.09 – 2019.06B.E., Anhui University — Supervisors: Prof. Yanlan Wu, Prof. Peng Jiang
Fundings
2026.04 – 2029.03PI, RIKEN SPDR Research Fund (3,000,000 JPY)
2024.10 – 2025.09PI, UTokyo AI Center Fusion Research Promotion Fund (1,600,000 JPY)
2024.04 – 2026.03PI, Grant-in-Aid for JSPS Research Fellows (1,500,000 JPY)
2023.12 – 2024.12PI, UTokyo AI Center Fusion Research Promotion Fund (2,000,000 JPY)
2023.06 – 2024.03PI, UTokyo GSFS Challenging New Area Doctoral Research Grant (600,000 JPY)
2023.06 – 2024.03CI, UTokyo GSFS Challenging New Area Doctoral Research Grant (600,000 JPY)
2023.04 – 2025.09PI, Microsoft Research Asia Collaborative Research Program Fellowship (10,000 USD)
2016.11 – 2018.11PI, Chinese National Innovative Research Project for Undergraduate Students (10,000 CNY)
Services
Community Service
2025 – NowCo-Lead of Machine/Deep Learning for Image Analysis (WG-MIA), IEEE GRSS Image Analysis and Data Fusion Technical Committee (IADF TC)
2026Lead-Organiser, BRIGHT Challenge: Advancing All-Weather Building Damage Mapping to Instance-Level, CVPR Workshop 2026
2026Judge, Outstanding Student and PhD candidate Presentation (OSPP) Contest, EGU General Assembly 2026
2025Lead-Organiser, IEEE GRSS Data Fusion Contest 2025 – All-Weather Land-Cover Mapping & Disaster Response
2024Co-Organiser, OpenEarthMap Land Cover Mapping Few-Shot Challenge, CVPR Workshop 2024
Editorial Activity
2026Session Chair, Synthetic Data for Earth Observation: Bridging the Data Gap to Empower Next-Generation Remote Sensing Applications, IGARSS 2026
2024 – 2026Guest Editor, Special Issue on Recent Advances in Deep Learning-based High-Resolution Image Processing and Analysis, Remote Sensing (MDPI)
Reviewer
- IEEE Transactions on Pattern Analysis and Machine Intelligence (TPAMI)
- IEEE Transactions on Image Processing (TIP)
- IEEE Transactions on Circuits and Systems for Video Technology (TCSVT)
- IEEE Transactions on Neural Networks and Learning Systems (TNNLS)
- IEEE Transactions on Geoscience and Remote Sensing (TGRS)
- IEEE Transactions on Multimedia (TMM)
- International Journal of Computer Vision (IJCV)
- Remote Sensing of Environment (RSE)
- Earth System Science Data (ESSD)
- ISPRS Journal of Photogrammetry and Remote Sensing (P&RS)
- Medical Image Analysis (MedIA)
- Information Fusion (InfFus)
- International Journal of Applied Earth Observation and Geoinformation (JAG)
- IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)
- European Conference on Computer Vision (ECCV)
- Annual Conference on Neural Information Processing Systems (NeurIPS)
- Other 50+ journals & conferences ...
Awards & Honors
- 2026 — UTokyo President’s Award for Academic Achievement
- 2026 — UTokyo GSFS Dean’s Award for Academic Achievement
- 2025 — JSPS Research Fellow’s Special Allowance (Research Incentive Grant)
- 2024 — Japan Society for the Promotion of Science (JSPS) DC2 Research Fellowship
- 2023 — Japanese-Swiss Young Researchers' Exchange Programme Special 2023 Exchange Grant
- 2022 — The University of Tokyo Fellowship (Todai Fellowship)
- 2022 — Outstanding Graduate Student, Wuhan University
- 2021 — Wang Zhizhuo Innovation Talent Scholarship, Wuhan University
- 2021 — National Scholarship for Postgraduates, Ministry of Education
- 2021 — First Prize of Academic Scholarship, Wuhan University
- 2021 — Outstanding Graduate Student, Wuhan University
- 2020 — National Scholarship for Postgraduates, Ministry of Education
- 2020 — First Prize of Academic Scholarship, Wuhan University
- 2020 — Outstanding Graduate Student, Wuhan University
- 2019 — LIESMARS Scholarship for Excellent First-Year Postgraduates
- 2019 — Excellent Graduate of Anhui Province
- 2018 — First Prize of Academic Scholarship, Anhui University
- 2018 — Second Prize, Esri Cup GIS Software Development Contest in China
- 2018 — Outstanding Prize, National Geomatics Contest in Programming
- 2018 — Meritorious Winner, US Mathematical Contest in Modeling
- 2017 — Second Prize, China National Mathematical Contest in Modeling
- 2017 — National Scholarship for Undergraduates, Ministry of Education
- 2016 — Anhui University Scholarship for Excellent Students
Resources
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