The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Publications Copernicus
Download
Citation
Articles | Volume XXXVIII-3/W22
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XXXVIII-3/W22, 185–190, 2011
https://doi.org/10.5194/isprsarchives-XXXVIII-3-W22-185-2011
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XXXVIII-3/W22, 185–190, 2011
https://doi.org/10.5194/isprsarchives-XXXVIII-3-W22-185-2011
 
26 Apr 2013
26 Apr 2013

DEM GENERATION BY MEANS OF NEW DIGITAL AERIAL CAMERAS

J. Höhle J. Höhle
  • Dept. of Planning, Aalborg University, Fibigerstraede 11, 9220 Aalborg, Denmark

Keywords: Acquisition, Sensor, CCD, Imagery, Impact Analysis, Accuracy, DEM/DTM

Abstract. Based on practical experiences with the first generation of digital cameras the impact of four new digital aerial cameras on the DEM generation is estimated. The cameras are evaluated with respect to elevation accuracy, area coverage and image quality. In the derived formulae for the absolute accuracy of elevations a camera factor is applied, which summarizes several features in one number. The produced graphs show the potential of the new cameras regarding the relative and absolute accuracy of automatically derived elevations. For better absolute elevation accuracy the increase of the base/height ratio and of the resolving power of lenses are more important than the reduction of the pixel size. Improvement of the elevation accuracy by means of multi-ray photogrammetry is discussed.