Orthophotos 2022/2023 - Flying limits (WMS service)

The orthophotos are a geodatabase specially produced for Dresden (basic map). This depicts the urban area of the state capital Dresden with the help of equalized, georeferenced aerial images in a ground resolution of 20 cm. Based on the survey flights carried out almost annually, the original contains comprehensive material of georeferenced aerial images (vertical images) with 60% longitudinal and 30% transverse coverage. Initially used as a basis for photogrammetric stereo evaluation, these images are suitable as an information layer in a GIS, WMS or similar after differential equalization. These so-called orthophotos are largely free of positional errors (resulting from the shooting process and the elevation movement of the terrain) and have the same geometric properties of a map - supplemented by the pictorial information of a photograph. As a rule, several orthophotos are assembled into one or more orthophotomosaics, depending on whether a sheet-cut-free or tiled storage is desired or required. The orthophoto stock 2022 / 2023 with a floor resolution of 20 cm consists of 112 orthophotomosaic tiles in leaf section 1:5 000, the basis of which is in turn 500 aerial photographs (vertical images) from 2 different image flights. The southeastern half of the city area (including the city center) comes from an aerial flight from 22.04.2023, the northwestern half from an aerial flight from 11.03.2022.