Photogrammetry is used for the derivation of 3D information of points, lines and areas on the terrain from aerial and satellite images for the development of geospatial databases and spatial information systems (SIS).
Remotely sensed observations of the Earth from air- and space-borne sensors provide the basis for mapping of human and natural activities; for monitoring change; for assessing and mitigating disasters; for identifying and assessing non-renewable resources; for monitoring temporal changes in weather, land and sea cover; and for many other applications.