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Palestra Extraordinária: Watershed and collapses in simplicial complexes.
Prof. Jean Cousty, ETIS, Informatics Department, ESIEE Paris, France, na Série de Seminários 2009 da Pós-Graduação, dia 17/04/2009, às 08:00 h, Auditório do IC , Sala 85 - IC 2.
| What | Palestra |
|---|---|
| When |
17/04/2009 from 08:00 to 09:00 |
| Where | Sala 301 - IC 3 |
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Simplicial and cubical complexes are used to model discrete images and
discrete surfaces (such as triangulated meshes). They constitute a
rich framework to handle topological notions such as the one of
collapse (a discrete analog of a continuous deformation) from which
discrete homotopic skeletons can be defined.
This talk will be focused on watersheds in (weighted) simplicial
complexes. Our first contribution states that any watershed in a
(weighted) simplicial complex of dimension n is a simplicial complex
of dimension n-1. Then, we establish, through an equivalence theorem,
a link between (binary and grayscale) skeletons and watersheds.
Finally, we will show that the problem of computing a watershed in a
simplicial complex can be reduced to the one of computing a watershed
cut in edge-weighted graph.
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Jean Cousty received his Ingénieur's degree from the École Supérieure
d'Ingénieurs en Électrotechnique et Électronique (ESIEE Paris, France)
in 2004 and the Ph.D. degree from the Université de Marne-la-Vallée
(France) in 2007. He received the special award in 2008 from the
AFRIF association (French Association for Pattern Recognition and
Interpretation) for his PhD dissertation.
After a one-year post-doctoral period in the ASCLEPIOS research team
at INRIA (Sophia-Antipolis, France) with Nicholas Ayache and Xavier
Pennec, he is now teaching and doing research with the Informatics
Department, ESIEE Paris, and with the Institut Gaspard Monge,
Université Paris-Est Marne-la-Vallée. His current research interests
include medical image analysis, 3D mesh processing and discrete
mathematics.
VII WTD do IC 2012
