Ansatte – Københavns Universitet

A multi-scale kernel bundle for LDDMM: towards sparse deformation description across space and scales

Publikation: Bidrag til bog/antologi/rapportKonferencebidrag i proceedingsForskningfagfællebedømt

The Large Deformation Diffeomorphic Metric Mapping framework constitutes a widely used and mathematically well-founded setup for registration in medical imaging. At its heart lies the notion of the regularization kernel, and the choice of kernel greatly affects the results of registrations. This paper presents an extension of the LDDMM framework allowing multiple kernels at multiple scales to be incorporated in each registration while preserving many of the mathematical properties of standard LDDMM. On a dataset of landmarks from lung CT images, we show by example the influence of the kernel size in standard LDDMM, and we demonstrate how our framework, LDDKBM, automatically incorporates the advantages of each scale to reach the same accuracy as the standard method optimally tuned with respect to scale. The framework, which is not limited to landmark data, thus removes the need for classical scale selection. Moreover, by decoupling the momentum across scales, it promises to provide better interpolation properties, to allow sparse descriptions of
the total deformation, to remove the tradeoff between match quality
and regularity, and to allow for momentum based statistics using scale
information.
OriginalsprogEngelsk
TitelInformation Processing in Medical Imaging : 22nd International Conference, IPMI 2011, Kloster Irsee, Germany, July 3-8, 2011. Proceedings
RedaktørerGábor Székely, Horst K. Hahn
Antal sider12
ForlagSpringer
Publikationsdato2011
Sider624-35
ISBN (Trykt)978-3-642-22091-3
ISBN (Elektronisk)978-3-642-22092-0
DOI
StatusUdgivet - 2011
Begivenhed22nd International Conference on Information Processing in Medical Imaging - Kloster Irsee, Tyskland
Varighed: 3 jul. 20118 jul. 2011
Konferencens nummer: 22

Konference

Konference22nd International Conference on Information Processing in Medical Imaging
Nummer22
LandTyskland
ByKloster Irsee
Periode03/07/201108/07/2011
NavnLecture notes in computer science
Vol/bind6801
ISSN0302-9743

ID: 170211210