Centre de Mathématiques et de Leurs Applications

Orateur :  Yifei Lou

Titre :  Image Recovery via Nonlocal Operators

Résumé : This paper considers two nonlocal regularizations for image
recovery, which exploit the spatial interactions in images. We get
superior results using preprocessed data as input for the weighted
functionals.  Applications discussed include image deconvolution
and tomographic reconstruction.  The numerical results show our
method outperforms some previous ones.

Orateur : Alex Chen

Titre : Image Segmentation Through Efficient Boundary Sampling

Résumé :  A combined geometric and statistical sampling algorithm for
image segmentation inspired by an algorithm for environmental sampling
using autonomous robots is presented.  The method is especially designed to
handle high dimensional and large images.