=> The CNES teams of the THEIA Land Data Center have reprocessed the SPOT4 (Take5) data, in order to take into account a large number of images that were not processed in the first place, because some data had not been yet received or because their processing had failed due to a few little bugs. The […]
=> As explained in the post about atmospheric effects, the scattering of light by molecules and aerosols in the atmosphere brings about several effects : scattering adds some haze on the images (the atmospheric reflectance), lessens the signal from the surface (the atmospheric transmission), and blurs the images (the adjacency effects). This post is about […]
(English Version) Le « Pôle Thématique Surfaces Continentales » THEIA est une structure nationale inter-organismes destinée à valoriser les données satellitaires, en premier lieu au service de la recherche environnementale sur les terres émergées, et en second lieu des politiques publiques de suivi et de gestion des ressources environnementales. Son objectif est de faciliter la mesure de […]
(French Version) The THEIA Land Data Centre is a French inter-agency initiative designed to promote the use of satellite data, primarily for environmental research on land surfaces but also for public policy monitoring and for management of environmental resources. Its objective is to foster the use of remote sensing data to measure the impact of […]