30. Vitesses Radiales

VITESSES RADIALES ASTROMETRIQUES vis-à-vis de VITESSES

Estimation de vitesses par assimilation de données variationnelle

Résumé – Les méthodes classiques d’estimation dense de la vitesse (de type flot optique) s’appuient sur l’estimation des dérivées spatio-temporelles de l’image. Celles-ci sont difficiles à estimer dans le cas d’occlusion d’une partie des acquisitions. Les approches issues de l’assimilation de données s’appuient sur un modèle d’évolution temporelle, qui permet de répondre à ce problème des donné...

Radial Basis Functions for Phase Unwrapping Funciones Radiales de Base para Desenvolvimiento de Fase

An important step in fringe pattern analysis is the so called phase unwrapping. Although this task can be performed easily using path dependent algorithms, most times, however, these algorithms are not robust enough specially in the presence of noise. On the other hand, path independent methods such as least-squares based or regularization based may be little convenient due to programming compl...

Premixed insulin aspart 30 (Biasp 30) vs. premixed human insulin 30 (BHI 30) in gestational diabetes mellitus--a pilot study.

OBJECTIVE The objective of the study was to compare premixed insulin aspart 30 (BIAsp 30) vs premixed human insulin 30 (BHI 30) on efficacy, safety, fetal and perinatal outcomes in pregnancies associated with gestational diabetes mellitus [GDM]. This was the first randomized study to use pre mixed insulin analogue [BIAsp] in GDM. METHODS The study population consisted of 76 GDM women assigned...

Estimation et analyse de champs denses de vitesses d'écoulements fluides. (Estimation and analysis of dense fluid flows)

This thesis is concerned with uid motion analysis in image sequences and involves two main issues.In a rst part, we address the problem of estimating a dense motion eld. Due to the great deal ofspatial and temporal distortions that luminance patterns exhibit in uid imagery, standard techniquesfrom Computer Vision, originally designed for quasi-rigid motions with stable salient f...