Hering, A.A.HeringGinneken, B. vanB. vanGinnekenHeldmann, S.S.Heldmann2022-03-142022-03-142019https://publica.fraunhofer.de/handle/publica/41042910.1007/978-3-030-32226-7_292-s2.0-85075819045We present a novel multilevel approach for deep learning based image registration. Recently published deep learning based registration methods have shown promising results for a wide range of tasks. However, these algorithms are still limited to relatively small deformations. Our method addresses this shortcoming by introducing a multilevel framework, which computes deformation fields on different scales, similar to conventional methods. Thereby, a coarse-level alignment is obtained first, which is subsequently improved on finer levels. We demonstrate our method on the complex task of inhale-to-exhale lung registration. We show that the use of a deep learning multilevel approach leads to significantly better registration results.enconference paper