Various countries are digitizing their archives of aerial images, going back to the 40's. These historical aerial images are a unique and relatively unexplored means to chronicle land-cover information over the past 100 years with very high spatial resolution. Such data provide a relatively dense temporal sampling of the territories. 3D information can even be retrieved since many surveys were performed under photogrammetric conditions. Therefore, both long-term environmental monitoring studies and historical object detection can be based on the analysis of these very rich time series of images. The activity feature various open issues related to the geo-processing of historical aerial images, including automatic processing, feature identification and extraction, maps generation, etc.
Related to this research activities, a benchmark has been established in collaboration with EuroSDR.