activity
20232026
collaborators

7 papers

cs.CV2026

Schrödinger-Inspired Time-Evolution for 4D Deformation Forecasting

Ahsan Raza Siyal, Markus Haltmeier, Ruth Steiger +2

Spatiotemporal forecasting of complex three-dimensional phenomena (4D: 3D + time) is fundamental to applications in medical imaging, fluid and material dynamics, and geophysics. In…

cs.CV2025

Robust Rigid and Non-Rigid Medical Image Registration Using Learnable Edge Kernels

Ahsan Raza Siyal, Markus Haltmeier, Ruth Steiger +3

Medical image registration is crucial for various clinical and research applications including disease diagnosis or treatment planning which require alignment of images from differ…

cs.CV2025

DARE: A Deformable Adaptive Regularization Estimator for Learning-Based Medical Image Registration

Ahsan Raza Siyal, Markus Haltmeier, Ruth Steiger +3

Deformable medical image registration is a fundamental task in medical image analysis. While deep learning-based methods have demonstrated superior accuracy and computational effic…

math.NA2024

Error Estimates for Data-driven Weakly Convex Frame-based Image Regularization

Andrea Ebner, Matthias Schwab, Markus Haltmeier

Inverse problems are fundamental in fields like medical imaging, geophysics, and computerized tomography, aiming to recover unknown quantities from observed data. However, these pr…

cs.CV2024

A lightweight residual network for unsupervised deformable image registration

Ahsan Raza Siyal, Astrid Ellen Grams, Markus Haltmeier

Accurate volumetric image registration is highly relevant for clinical routines and computer-aided medical diagnosis. Recently, researchers have begun to use transformers in learni…

cs.CV2024

Deep Gaussian mixture model for unsupervised image segmentation

Matthias Schwab, Agnes Mayr, Markus Haltmeier

The recent emergence of deep learning has led to a great deal of work on designing supervised deep semantic segmentation algorithms. As in many tasks sufficient pixel-level labels…

eess.IV2023

Three-dimensional Bone Image Synthesis with Generative Adversarial Networks

Christoph Angermann, Johannes Bereiter-Payr, Kerstin Stock +2

Medical image processing has been highlighted as an area where deep learning-based models have the greatest potential. However, in the medical field in particular, problems of data…