=> Following its installation in March 2021, our new ROSAS device at Lamasquère has produced a first series of acquisitions over a complete maize crop cycle. The ROSAS system is based on the use of a multi-spectral photometer to carry out angular and spectral measurements of both incident and reflected radiation from the surface. The […]
Last year in November we noticed these unusual white spots in a Sentinel-2 image near Barèges… These white spots were artificial snow spread by snow cannons. At the same time of the Sentinel-2 acquisition, they were also « visible » as cold spots from our thermal infrared camera installed at Pic du Midi. This year in November […]
Sentinel-2 captured an impressive view of the Fraser river sediment plume in Georgia Strait caused by the historic flood in British Columbia (250 mm rainfall in 48 hours). The image contains an amusing detail west off the Vancouver International Airport. This red-green-blue object is an airplane or « plainbow« . It is due to shifts between the […]
En janvier dernier nous vous annoncions la mise en couveuse d’un bel iceberg au terminus du glacier de l’Astrolabe … Yann Niort qui travaille actuellement pour Météo-France en Terre-Adélie nous a signalé que le glacier avait enfin vêlé ! En fait ce n’est pas un iceberg mais une jolie portée de plusieurs icebergs que l’Astrolabe […]
There are several MAGicians in the CESBIO laboratory, and I am one of them (with all due modesty). According to my definition, MAGicians are participants to Mission Advisory Groups, for instance for CNES or ESA satellite projects. These days, I participate to the MAG for Sentinel-HR at CNES, and for Sentinel-2 Next Generation at ESA. […]
Because it’s a stunning place that I will probably never visit, I have spent some time to make a 3D visualization of Mount Everest using QGISthreejs plugin in QGIS. I draped the 24 Oct 2021 clear-sky Sentinel-2 image on a gapfilled version of the HMA 8m digital elevation model (like in this post on the […]
*Update* on 27/10/2021 : the deadline has been extended to early January 2022 ! *Update* on 07/10/2021 : The deadline has been extended to the 15th of November !! And sample products are now available. We’re relieved, thank you ESA: *Update* on 29/09/2021 : ESA just detailed the changes here, and they will become operational […]
=> Les techniques de l’état de l’art en Deep Learning permettent-elles une délinéation individuelle de chaque parcelle de culture, comme le laisse penser cet article récent ? C’est ce que nous avons cherché à savoir au cours d’un stage au CESBIO en cherchant à qualifier l’architecture Mask R-CNN pour cette tâche. Nous vous livrons ici […]
=> Do state-of-the-art deep learning techniques allow for individual delineation of each cropland, as suggested by this recent article? In the context of an internship at CESBIO, we tried to evaluate the performance of Mask R-CNN architecture for this task. In this post, we summarize what we learned. Mask R-CNN principles To sum up, Mask […]