Historické letecké snímky v geografickém výzkumu – problémy při jejich zpracování a možná řešení

Abstract

The beginning of the aerial photography of Czech landscapes coincides with the late 1930s. During the last seven decades several hundred thousands mainly panchromatic images were made primarily for military purposes. These images covered the entire territory of the Czech Republic, in fact Czechoslovakia, as the Czech Republic was a part of his country at that time. A special military unit exists up to this day but social changes after 1989 initiated the rise of the private sector and the aerial photography became business. The interpretation of aerial images from the historical military archive mentioned above has its specificity. The most of archive aerial images do not have complete data concerning the camera calibration certificate, e.g. a focal length, fiducial film coordinates, height of flight, time and date or scale. The following article describes processing possibilities of these images by the photogrammetric method, so-called orthorectification by the Leica Photogrammetry Suite – special photogrammetric software for geospatial image processing.