Diffusion des images radar et satellite

Et Aveugles En Traitement Du Signal Et Des Images

We consider the problem of subspace estimation in aBayesian setting. Since we are operating in the Grassmann man-ifold, the usual approach which consists of minimizing the meansquare error (MSE) between the true subspace and its estimatemay not be adequate as the MSE is not the natural metric in theGrassmann manifold , i.e., the set of -dimensional subspacesin . As an al...

Etude sur l'Agalaxic contagieuse des chèvres et des moutons

The SUMO Ship Detector Algorithm for Satellite Radar Images

Search for Unidentified Maritime Objects (SUMO) is an algorithm for ship detection in satellite Synthetic Aperture Radar (SAR) images. It has been developed over the course of more than 15 years, using a large amount of SAR images from almost all available SAR satellites operating in L-, Cand X-band. As validated by benchmark tests, it performs very well on a wide range of SAR image modes (from...

Hierarchical Texture Segmentation of Weather Radar and Satellite Images

Segmentation of weather imagery is a problem fundamental to automated weather analysis, but one that has defied good solutions. Weather images have certain characteristics that cause problems for traditional image processing algorithms – the textural nature of clouds, poor dynamic range and poor spatial resolution. In this paper, we describe a novel method of performing multiscale, hierarchical...

Statistiques et visibilité des bibliothèques numériques : quelles stratégies de diffusion ?

Cet article compare les statistiques de consultation des principales bibliothèques numériques, interroge sur l’existence d’une relation entre le volume des entrepôts numériques et la visibilité sur Internet de chaque document numérisé, et analyse les conséquences des stratégies de diffusion des bibliothèques numériques françaises. Les données statistiques ont été obtenues par des moyens classiq...