This image, acquired by one of the Copernicus Sentinel-2 on 8 February 2022, shows ongoing wildfires in the Boma National Park in South Sudan. Fires are common at this time of year in the sub-Saharan region.
Category Archives: remote sensing
Imágenes satélite Landsat 8 L1 y Sentinel 2 L2A del volcán de La Palma en erupción (+Sentinel-5 SO2+Ventusky)
Como vemos en el ejemplo del volcán de La Palma, después de la reciente erupción del 19 de Septiembre, las bandas del infrarrojo de onda corta (SWIR) identifican variaciones de temperatura en superficie, por lo que las composiciones RGB a falso color, combinando bandas SWIR y bandas en el visible, son perfectas para identificar el curso de la colada de lava a lo largo del tiempo.
Comparación de DTM usando Global Mapper 17.0.1
Comparar, primero visualmente y después cuantitativamente dos DTM. Por un lado elegimos una fuente muy usual, SRTM con un DTM derivado de Fotogrametría Stereo.
Change detection – Detección de cambios en polígonos
THE PROCEDURE: Centroids of buildings; Spatial join showing presence-absence, considering a 10m accuracy threshold, meaning if the centroid has not moved more than 10m, its the same building. If the centroid in 2012 is not in 2014, its considered as demolished. If a new centroid appears its considered new building.
Remote Sensing, Photogrammetry, Lidar and Landuse IGN Spain
A few more lines for leting you know again that i passed this other course just now in Instituto Geográfico of Spain (IGN). Remote Sensing, Photogrammetry, Lidar and Landuse, a comprehensive 40h update on relevant information i need tu use on a daily basis. This ‘update’ helps me to better understand what i am working with andContinue reading “Remote Sensing, Photogrammetry, Lidar and Landuse IGN Spain”
Geovisualization.net 