The di usion orientation distribution function (ODF) can be reconstructed from q-ball imaging (QBI) to map the complex intravoxel structure of water di usion. As acquisition time is particularly large for high angular resolution di usion imaging (HARDI), fast estimation algorithms have recently been proposed, as an on-line feedback on the reconstruction accuracy. Thus the acquisition could be s...

We present a physics-based deformable model framework for the incremental object shape estimation and tracking in image sequences. The model is estimated by an optimization process that relates image-based cost functions to model motion via the Lagrangian dynamics equations. Although previous approaches have investigated various combinations of cues in the context of deformable model shape and ...

In order to elucidate the stabilization mechanism of the visual perception duringvoluntary eye movements the perception of a moving object during a eye saccade was investi-gated in humansubjects. The results were analyzed in terms of velocity and displacement percep-tion channels. The experimental results indicate that during voluntary saccades there is nosuppression of movement...

Cet article, inscrit dans le champ de l’analyse du discours numérique et des Gender & Language Studies, propose penser les réussites échecs discursifs #MeToo en examinant un corpus tweets variés (témoignages, critiques militantes féministes presse). Depuis 2017, mouvement est présenté comme agissant puisqu’il aurait permis la libération parole femmes au sujet violences sexuelles dont elles sont...

RÉSUMÉ De nombreuses études sont en cours afin de développer des méthodes de traitement automatique de langues des signes. Plusieurs approches nécessitent de grandes quantités de données segmentées pour l’apprentissage des systèmes de reconnaissance. Nos travaux s’occupent de la segmentation semi-automatique de gestes afin de permettre d’identifier le début et la fin d’un signe dans un énoncé e...

Electrical activity of lateral geniculate nucieus, optic tract and visual cortex wasrecorded in cats paralysed with curare. The responses to a low intensity flash of light werestudied when the flash was associated with the sudden movement (> 3OO”/sec)on the retina of animage involving contours. When the fiash occurred 50 msec after the beginning of the move-ment, the respons...