Meny

Du är här

Global minimization for the Chan-Vese model

Seminarium

Prof Xue-Cheng Tai, Depart of Mathematics, University of Bergen, Norway
Abstract: We propose an exact global minimization framework for the Chan-Vese model with 4 regions in a convex variational setting. A global solution is guaranteed if the data term satisfies a mild condition. Theoretical and experimental arguments are given that such a condition will hold in practice for the most commonly used type of data terms. Otherwise, a truncation scheme is proposed which tends to produce global solutions in practice, should this not be the case. We also build up a convex relaxation for Pott's model with 4 regions, which is at least as tight as the tightest existing relaxation, but significantly simpler. Algorithms are proposed which are very efficient due to the simple formulations.

Tid: 
2012-11-09 10:15 till 11:00
Ort: 
Matematikcentrum, MH309

Om händelsen

Tid: 
2012-11-09 10:15 till 11:00
Ort: 
Matematikcentrum, MH309

Box 117, 221 00 LUND
Telefon 046-222 00 00 (växel)
Telefax 046-222 47 20
lu [at] lu [dot] se

Fakturaadress: Box 188, 221 00 LUND
Organisationsnummer: 202100-3211
Om webbplatsen