Research output per year
Research output per year
Personal profile
Author IDs
ORCID iD: 0009-0006-4690-4007
Scopus Author ID: 57209692497
Impact
Qualifications (Brief)
Ms (Columbia) PhD (Gatech)
Biography
Roy He holds a Ph.D. from Georgia Institute of Technology (Best thesis), a Master's degree from Columbia University, and a B.Sc. (Honours) from Chongqing University. He conducted research as a visiting researcher at Ecole Normale Superieure Paris-Saclay in 2020. Although accepted as a post-doctoral candidate at Duke University in 2021, he was unable to attend due to COVID-related travel restrictions. Instead, he served as a post-doctoral researcher at Shanghai Jiao Tong University from 2021 to 2023. In 2023, he joined City University of Hong Kong as an Assistant Professor.
His research interests encompass variational and statistical image processing (segmentation, decomposition, reconstruction, color enhancement, etc.), data-driven modeling (PDE identification), mathematical computer graphics (image vectorization), numerical PDE and optimization, and deep learning theory and applications in computer vision.
Prizes/Honours
- 2022 “GT Sigma Xi Best PhD Thesis Award” Georgia Institute of Technology.
- 2021 “International Postdoctoral Exchange Fellowship” Office of China Postdoc Council.
- 2020 “Larry O'Hara Fellowship” Geogia Institute of Technology.
- 2020 “Chateaubriand Fellowship” Embassy of France in United States.
Activities
Conferences Attended
- 8 Oct 2023 - 11 Oct 2023, IEEE ICIP 2023, Kuala Lumpur, Malaysia.
- Jun 2023, 10th International Congress for Industrial and Applied Mathematics (ICIAM), Japan.
- Jun 2023, International Conference on Applied Mathematics (ICAM) 2023, Hong Kong.
- May 2023, The 12th Conference on Inverse Problems, Imaging and Applications, China.
- 16 Oct 2022 - 19 Oct 2022, IEEE ICIP 2022, Bordeaux France.
- 19 Sep 2021 - 22 Sep 2021, IEEE ICIP 2021, Anchorage, Alaska, USA.
Teaching
- Sep 2023 - Dec 2023, Calc & Basic Linear Algebra I.
Services in CityUHK
Administrative Assignment
- 2023 - 2024, MA Representative for EE Programme Committees, Department representative.
Fingerprint
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Collaborations from the last five years
Recent external collaboration on country/territory level. Dive into details by clicking on the dots or
Research output
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Euler's Elastica-Based Cartoon-Smooth-Texture Image Decomposition
He, R. Y. & Liu, H., Mar 2025, In: SIAM Journal on Imaging Sciences. 18, 1, p. 526-569Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
1 Citation (Scopus) -
Group projected subspace pursuit for block sparse signal reconstruction: Convergence analysis and applications
He, R. Y., Liu, H. & Liu, H., Feb 2025, In: Applied and Computational Harmonic Analysis. 75, 101726.Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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Real-Time Scene Recovery from Image Scale Space and Perceptual Hue Similarity
He, R. Y. & Wang, H., May 2025, Scale Space and Variational Methods in Computer Vision: 10th International Conference, SSVM 2025, Dartington, UK, May 18–22, 2025, Proceedings, Part I. Bubba, T. A., Gaburro, R., Gazzola, S., Papafitsoros, K., Pereyra, M. & Schönlieb, C.-B. (eds.). 1 ed. Springer, Cham, p. 119-131 (Lecture Notes in Computer Science; vol. 15667 LNCS).Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review
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How Much Can One Learn a Partial Differential Equation from Its Solution?
He, Y., Zhao, H. & Zhong, Y., Oct 2024, In: Foundations of Computational Mathematics. 24, 5, p. 1595-1641Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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A deep unrolled neural network for real-time MRI-guided brain intervention
He, Z., Zhu, Y.-N., Chen, Y., Chen, Y., He, Y., Sun, Y., Wang, T., Zhang, C., Sun, B., Yan, F., Zhang, X., Sun, Q.-F., Yang, G.-Z. & Feng, Y., 2023, In: Nature Communications. 14, 8257.Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Open AccessFile6 Citations (Scopus)60 Downloads (CityUHK Scholars)
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FR/HKJRS: NN-empowered methods for inverse problems in imaging: algorithms and recovery guarantees
HE, R. (Principal Investigator / Project Coordinator) & FADILI, J. (Co-Investigator)
1/02/25 → …
Project: Research
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ECS: Variational Foundation for Geometric Image Representation
HE, R. (Principal Investigator / Project Coordinator)
1/01/26 → …
Project: Research
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Mathematics of imaging: trends and perspectives
HE, R. (Invited Speaker)
30 Jun 2025 → 4 Jul 2025Activity: Organizing or Participating in a conference / an event › Workshop / Seminar / Course
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Advanced Methods and Theories in High-dimensional Image Processing Seminar
HE, R. (Invited Speaker)
19 Mar 2025 → 21 Mar 2025Activity: Organizing or Participating in a conference / an event › Workshop / Seminar / Course
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Mathematical Theory and Algorithms in Imaging Science and AI
HE, R. (Invited Speaker)
27 Dec 2024 → 30 Dec 2024Activity: Organizing or Participating in a conference / an event › Workshop / Seminar / Course
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CSIAM 2024
HE, R. (Invited Speaker)
25 Oct 2024 → 27 Oct 2024Activity: Organizing or Participating in a conference / an event › Conference / Symposium
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Workshop on Inverse Problems and Image Processing
HE, R. (Invited Speaker)
19 Aug 2024 → 23 Aug 2024Activity: Organizing or Participating in a conference / an event › Workshop / Seminar / Course