Institut de Recherche en Informatique et Systèmes Aléatoires

On Sparse Representations in Arbitrary Redundant Bases

The purpose of this contribution is to generalize some recent results on sparse representations of signals in redundant bases. The question that is considered is the following: ...

Multiple factor analysis (AFMULT package)

Assemblathon 1: A competitive assessment of de novo short read assembly methods

Low-cost short read sequencing technology has revolutionized genomics, though it is only just becoming practical for the high-quality de novo assembly of a novel large genome. W...

Optimal Spatial Adaptation for Patch-Based Image Denoising

A novel adaptive and patch-based approach is proposed for image denoising and representation. The method is based on a pointwise selection of small image patches of fixed size i...

Retrospective evaluation of intersubject brain registration

Although numerous methods to register brains of different individuals have been proposed, no work has been done, as far as we know, to evaluate and objectively compare the perfo...

Learning Unions of Orthonormal Bases with Thresholded Singular Value Decomposition

We propose a new method to learn overcomplete dictionaries for sparse coding structured as unions of orthonormal bases. The interest of such a structure is manifold. Indeed, it ...