Détection et cartographie des coupes rases par télédétection satellitaire optique

[Notes_IRSTEA]vol. 2, chap. 5 [Departement_IRSTEA]Territoires [TR1_IRSTEA]SYNERGIE [Axe_IRSTEA]TETIS-ATTOS [ADD1_IRSTEA]Dynamiques spatiales d'anthropisationInternational audienceThe French Ministry of Agriculture, in charge of forest policies, has commissioned the development of a clear‐cuts detection method with optical satellite images. Mapping the clear‐cuts relies on a change detection method based on two satellite images acquired between two consecutive years, during summer when trees show their leaves. This chapter presents a practical application of the clear‐cuts detection on a couple of Landsat 8 images acquired during summer 2015 and 2016, between Tours and Besancon. The clear‐cut detection method uses basic functionalities of quantum geographic information system (QGIS) to process raster and vector data. This choice allows anyone to apply processings without the need to install extensions. Of course, some steps of the method can be carried out with more efficient tools, in particular the Orfeo ToolBox (OTB) image processing library developed by CNES