23–24 Sept 2024
DESY
Europe/Berlin timezone

Stationary Velocity Fields on Matrix Groups for Deformable Image Registration

23 Sept 2024, 11:30
30m
Flash Seminar Room (DESY)

Flash Seminar Room

DESY

Notkestraße 85 22607 Hamburg Germany

Speaker

Johannes Bostelmann (Universität zu Lübeck)

Description

We present an extension of the Stationary Velocity Field (SVF) approach to matrix groups, with a particular focus on the Special Euclidean group SE(3). The SVF method is a popular tool for parameterizing invertible deformation fields and is particularly effective when integrated into machine learning-based networks. However, it can struggle with modeling large deformations. By extending the SVF approach to matrix groups like SE(3), we move Euclidean transformations into the low-frequency domain, aligning them with the natural bias of many neural network architectures towards low-frequency components. This extension can result in improved handling of large motions, allowing for more robust and efficient recovery in tasks that involve significant deformations. This method addresses challenges in deformation modeling, making it particularly relevant for deep learning-based applications.

Primary author

Johannes Bostelmann (Universität zu Lübeck)

Presentation materials

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