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Biomedical image registration faces challenging problems induced by the image acquisition process of the involved modality. A common problem is the omnipresence of noise perturbations. A low signal-to-noise ratio - like in modern dynamic imaging with short acquisition times - may lead to failure or artifacts in standard image registration techniques. A common approach to deal with noise in registration is image presmoothing, which may however result in bias or loss of information. A more reasonable alternative is to directly incorporate statistical noise models into image registration. In this work we present a general framework for registration of noise perturbed images based on maximum a-posteriori estimation. This leads to variational registration inference problems with data fidelities adapted to the noise characteristics, and yields a significant improvement in robustness under noise impact and parameter choices. Using synthetic data and a popular software phantom we compare the proposed model to conventional methods recently used in biomedical imaging and discuss its potential advantages.
|Title of host publication||WBIR 2014: Biomedical Image Registration|
|Number of pages||10|
|Publisher||Springer International Publishing|
|Publication status||Published - 01.01.2014|
|Event||Biomedical Image Registration, WBIR 2014|
- London, United Kingdom
Duration: 07.07.2014 → 08.07.2014
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- 1 Finished
Nonlinear mass-preserving registration for magnetic resonance imaging (MRI) and positron emission tomography (PET)
Burger, M. & Modersitzki, J.
01.04.12 → 31.03.15
Project: DFG Projects › DFG Individual Projects