[CvGmt News] Post-doc position in Nice

[Luigi Ambrosio]

JOB: Post-Doc position Université Nice-Sophia Antipolis, France

Duration: 12 months, available from now.

Subject: A new functional for target detection in infrared images

This offer is sponsored by the ANR (French National Research Agency).
The participants are the Ariana group from the I3S laboratory and INRIA
Sophia Antipolis, the department of mathematics of Nice University (J-A.
Dieudonné), the Pasteur Institute in Paris, and the French company Sagem
DS in Argenteuil.

Post-doc location: PDE and Numerical Analysis team, Department of
Mathematics J.A Dieudonné, University of Nice Sophia Antipolis, with
regular visits to Paris (Sagem DS and CMLA ENS Cachan).

The detection of singularities of codimension greater than or equal to
two in 2D or 3D images, for example the detection of points in 2D images
or filaments in 3D images, is an important issue for biological imaging
(with Pasteur Institute) and for 2D+t infrared images (with Sagem DS).
Some previous work has addressed these problems through the minimization
of a Ginzburg-Landau type functional [1, 2]. These models use the
analogy between the filaments to be detected and the electric or
magnetic vector field created by an electric current in a wire. In this
work, we propose to study a new functional for target detection in 2D+t
images. This functional is in the same vein as those proposed in [1] for
the detection of points in 2D images. The work will first consist in
finding an initial vector field linking the image data to the vector
field modelling the target. In this study, it will be necessary to take
into account the movement of the camera and then to describe the target
well, possibly using statistical methods. The proposed new functional
will be analyzed from a mathematical point of view, and various tests
will be performed on real infrared images supplied by Sagem DS.

[1] G. Aubert , J-F. Aujol, L. Blanc-Féraud, 2005, "Detecting
Codimension-2 objects in an image with Ginzburg-Landau models",
International Journal of Computer Vision", Vol. 65, (1-2), pp. 29-42.
[2] A. Baudour, G. Aubert, L. Blanc- Féraud "Detection and Completion of
Filaments: A Vector Field and PDE Approach" In SSVM 2007, LNCS 4485
proceedings, 2007.

The ideal candidate should have had lectures on the mathematical theory
of variational methods and PDEs, and image processing. Programming
skills in C/C++/Matlab are desired.

Please apply by sending the following documents (in PDF format) to
gaubert at math.unice.fr
- CV
- marks obtained for your last degree
- date of availability
- list of publications and PhD Thesis
- recommendation letter from your PhD supervisor, plus others if possible.
_____________________
--
Gilles Aubert
Professeur
Laboratoire de Mathématiques J.A Dieudonné
Université de Nice Sophia Antipolis
Parc Valrose
01080 Nice Cedex 02

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                          -------      email: l.ambrosio AT sns.it
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                        -------    fax:   ++39/050/563513
                       ///////    tel. home: 050/553178
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