10 July 2015

Stefan Sommer receives honorable prize at the IPMI conference


At the 24th IPMI conference (International Conference on Information Processing in Medical Imaging) Stefan Sommer, Assistant Professor at DIKU, gave his first presentation at the conference, which rewarded him with an Honourable Mention for his article 'Anisotropic Distributions on Manifolds: Template Estimation and Most Probable Paths'.

The Francois Erbsmann prize is awarded to the best presentation by a young researcher who gives his first presentation at the IPMI conference. This year the biennial conference was held in Scotland the 28th of June – 3rd of Jylu. The conference focuses on novel developments in the area of medical imaging including acquisition, formation, analysis and display of medical images.

A combination of mathematics, statistics, computer science and medicine

Stefans research combines advanced mathematics, statistics and computer science to develop new tools to analyze complicated datatypes, for example the shape of organs – datatypes which generally are nonlinear.

Stefans article and presentation treated how you can generalize anisotropic Brownian motion in nonlinear spaces and hereby find the most probable way in these spaces. The application is, among others, in the area of shape modelling, which can be used for medical image analysis to model the anatomical form. Normally forms don’t live in nonlinear spaces and changes in form are often anisotropic. This can e.g. appear by a bigger variation in some areas of the forms than others in datasets with forms of organs.

The work of Stefan will make it possible to model the most probable change in form rather than the most adjacent and thereby more precisely determine which form most likely will be present in the scanning. In his presentation Stefan showed examples with a Corpus Collosum, the central switchboard in the central part of the brain.

The video illustrates the most probable path in the sphere (the globe) as an example of a nonlinear space. The path deviates from a great circle which is normally used for navigation and as the shortest path between two points on the globe.

At the 23rd edition of the IPMI conference in 2013 a DIKU researcher, Aasa Feragen, Associate Professor, received an Honourable Mention for the Francois Erbsmann award. Read more

Read more about IPMI 2015