4th Alps-Adriatic Inverse Problems Workshop 2025 (AAIP 2025)

Session

Session 5

Oct 3, 2025, 9:50 AM

O.0.01

33. Position-Blind Ptychography: Viability of image reconstruction via data-driven variational inference

Tim Roith (Helmholtz Imaging, Deutsches Elektronen-Synchrotron DESY)

10/3/25, 9:50 AM

Ptychography is a type of coherent diffraction imaging which uses a strongly coherent X-ray source from a synchrotron to reconstruct high resolution images. By shifting the illumination source, it exploits redundancy of multiple diffraction patterns to robustly solve the related phase retrieval problem. The shift parameters are often subject to uncertainty and introduce additional...

48. A Lifted Bregman Strategy for Training Unfolded Proximal Neural Networks

Xiaoyu Wang

10/3/25, 10:15 AM

Unfolded proximal neural networks (PNNs) form a family of methods that combines deep learning and proximal optimization approaches. They consist in designing a task specific neural network by unrolling a proximal algorithm for a fixed number of iterations, where linear operators can be learned from prior training procedure. PNNs have shown to be more robust than traditional deep learning...