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Pablo Villanueva Perez

Senior lecturer

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4D-ONIX for reconstructing 3D movies from sparse X-ray projections via deep learning

Author

  • Yuhe Zhang
  • Zisheng Yao
  • Robert Klöfkorn
  • Tobias Ritschel
  • Pablo Villanueva-Perez

Summary, in English

The X-ray flux from X-ray free-electron lasers and storage rings enables new spatiotemporal opportunities for studying in-situ and operando dynamics, even with single pulses. X-ray multi-projection imaging is a technique that provides volumetric information using single pulses while avoiding the centrifugal forces induced by conventional time-resolved 3D methods like time-resolved tomography, and can acquire 3D movies (4D) at least three orders of magnitude faster than existing techniques. However, reconstructing 4D information from highly sparse projections remains a challenge for current algorithms. Here we present 4D-ONIX, a deep-learning-based approach that reconstructs 3D movies from an extremely limited number of projections. It combines the computational physical model of X-ray interaction with matter and state-of-the-art deep learning methods. We demonstrate its ability to reconstruct high-quality 4D by generalizing over multiple experiments with only two to three projections per timestamp on simulations of water droplet collisions and experimental data of additive manufacturing. Our results demonstrate 4D-ONIX as an enabling tool for 4D analysis, offering high-quality image reconstruction for fast dynamics three orders of magnitude faster than tomography.

Department/s

  • Synchrotron Radiation Research
  • NanoLund: Centre for Nanoscience
  • LTH Profile Area: Nanoscience and Semiconductor Technology
  • LU Profile Area: Light and Materials
  • Mathematics (Faculty of Sciences)
  • eSSENCE: The e-Science Collaboration
  • LTH Profile Area: Photon Science and Technology

Publishing year

2025-12

Language

English

Publication/Series

Communications Engineering

Volume

4

Issue

1

Document type

Journal article

Publisher

Nature Publishing Group

Topic

  • Atom and Molecular Physics and Optics

Status

Published

Project

  • Numerical Analysis and Scientific Computing

ISBN/ISSN/Other

  • ISSN: 2731-3395