109 citations · 367 across the 19 of their papers we have counts for
7 papers · 1 filter
Point target detection and subpixel position estimation in optical imagery
Vincent Samson, Frédéric Champagnat, Jean-François Giovannelli
This paper addresses the issue of detecting point objects in a clutter background and estimating their position by image processing. We are interested in the specific context where…
Image Reconstruction in Optical Interferometry
Éric Thiébaut, Jean-François Giovannelli
This tutorial paper describes the problem of image reconstruction from interferometric data with a particular focus on the specific problems encountered at optical (visible/IR) wav…
Bayesian interpretation of periodograms
J. -F. Giovannelli, J. Idier
The usual nonparametric approach to spectral analysis is revisited within the regularization framework. Both usual and windowed periodograms are obtained as the squared modulus of…
Regularized adaptive long autoregressive spectral analysis
J. -F. Giovannelli, J. Idier, G. Desodt +1
This paper is devoted to adaptive long autoregressive spectral analysis when (i) very few data are available, (ii) information does exist beforehand concerning the spectral smoothn…
An Improved Observation Model for Super-Resolution under Affine Motion
G. Rochefort, F. Champagnat, G. Le Besnerais +1
Super-resolution (SR) techniques make use of subpixel shifts between frames in an image sequence to yield higher-resolution images. We propose an original observation model devoted…
Data inversion for over-resolved spectral imaging in astronomy
T. Rodet, F. Orieux, J. -F. Giovannelli +1
We present an original method for reconstructing a three-dimensional object having two spatial dimensions and one spectral dimension from data provided by the infrared slit spectro…