Publications associées à Spherical basis

Harmonic analysis of spherical sampling in diffusion MRI

Jean-Philippe Thiran, Dimitri Nestor Alice Van De Ville, Yves Wiaux, Alessandro Daducci, Jason Douglas McEwen

In the last decade diffusion MRI has become a powerful tool to non-invasively study white-matter integrity in the brain. Recently many research groups have focused their attention on multi-shell spherical acquisitions with the aim of effectively mapping th ...

2011

Compressed sensing for wide-field radio interferometric imaging

Yves Wiaux, Jason Douglas McEwen

For the next generation of radio interferometric telescopes it is of paramount importance to incorporate wide field-of-view (WFOV) considerations in interferometric imaging, otherwise the fidelity of reconstructed images will suffer greatly. We extend comp ...

Wiley-Blackwell2011

Dynamic Visual Attention on the Sphere

Pierre-André Farine, Heinz Hügli, Iva Bogdanova Vandergheynst, Alexandre Bur

In this paper we present a computational model of dynamic visual attention on the sphere which combines static (intensity,chromaticity, orientation) and motion features in order to detect salient locations in omnidirectional image sequences while working d ...

Elsevier2010

Efficient Approximate Scaling of Spherical Functions in the Fourier Domain With Generalization to Hyperspheres

Ivan Dokmanic

We propose a simple model for approximate scaling of spherical functions in the Fourier domain. The proposed scaling model is analogous to the scaling property of the classical Euclidean Fourier transform. Spherical scaling is used for example in spherical ...

Institute of Electrical and Electronics Engineers2010

PHASE FIELD MODELING OF EQUILIBRIUM SHAPES AND GROWTH MORPHOLOGIES IN Al-Zn ALLOYS

Michel Rappaz, Jonathan Friedli, Aurèle Mariaux

The anisotropy of the solid-liquid interfacial energy, gamma(sl), plays a key role in the accurate prediction of growth morphologies in metallic alloys. This interfacial energy anisotropy can vary duo to alloy composition, especially when that of the pure ...

Minerals, Metals & Materials Soc, 184 Thorn Hill Rd, Warrendale, Pa 15086-7514 Usa2009

A Miniature Jumping Robot with Self-Recovery Capabilities

Dario Floreano, Mirko Kovac, Jean-Christophe Zufferey, Manuel Schlegel

In nature, many animals are able to jump, upright themselves after landing and jump again. This allows them to move in unstructured and rough terrain. As a further development of our previously presented 7g jumping robot, we consider various mechanisms ena ...

2009

The spherical approach to omnidirectional visual attention

Heinz Hügli, Iva Bogdanova Vandergheynst, Alexandre Bur

Computational visual attention (VA) has been widely investigated during the last three decades but the conventional algorithms are not suitable for omnidirectional images which often contain a significant amount of radial distortion. Only recently a comput ...

2008

3D Face Recognition using Sparse Spherical Representations

Pascal Frossard, Effrosyni Kokiopoulou, Ivana Tosic, Roser Sala Llonch

This paper addresses the problem of 3D face recognition using spherical sparse representations. We first propose a fully automated registration process that permits to align the 3D face point clouds. These point clouds are then represented as signals on th ...

2008

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Spherical basis

Harmonic analysis of spherical sampling in diffusion MRI

Sparse Source Recovery from Boundary Measurements using an Extension of Prony's Method for the Poisson Equation

Compressed sensing for wide-field radio interferometric imaging

Dynamic Visual Attention on the Sphere

Efficient Approximate Scaling of Spherical Functions in the Fourier Domain With Generalization to Hyperspheres

PHASE FIELD MODELING OF EQUILIBRIUM SHAPES AND GROWTH MORPHOLOGIES IN Al-Zn ALLOYS

The microcontainer shape in electropolymerization on bubbles

A Miniature Jumping Robot with Self-Recovery Capabilities

The spherical approach to omnidirectional visual attention

3D Face Recognition using Sparse Spherical Representations

Graph Chatbot

Chattez avec Graph Search

Sparse Source Recovery from Boundary Measurements using an Extension of Prony's Method for the Poisson Equation

Harmonic analysis of spherical sampling in diffusion MRI

A Miniature Jumping Robot with Self-Recovery Capabilities

Dynamic Visual Attention on the Sphere

PHASE FIELD MODELING OF EQUILIBRIUM SHAPES AND GROWTH MORPHOLOGIES IN Al-Zn ALLOYS

Compressed sensing for wide-field radio interferometric imaging

Efficient Approximate Scaling of Spherical Functions in the Fourier Domain With Generalization to Hyperspheres

The microcontainer shape in electropolymerization on bubbles

The spherical approach to omnidirectional visual attention

3D Face Recognition using Sparse Spherical Representations