Auflistung nach Schlagwort "Updating"

Sortiert nach: Sortierung: Ergebnisse:

  • Automated extraction of the Antarctic coastline using snakes 
    Klinger, T.; Heipke, Christian; Ott, N.; Schenke, H.W.; Ziems, M. (Göttingen : Copernicus GmbH, 2010)
    In this paper we present an automatic approach for coastline detection from images which is based on parametric active contours (snakes). Snakes require the definition of an energy functional that reflects the underlying ...
  • Automatic qualtiy control of cropland and grasland GIS objects using IKONOS satellite imagery 
    Helmholz, Petra; Heipke, Christian; Rottensteiner, Franz (Göttingen : Copernicus GmbH, 2010)
    As a consequence of the wide-spread application of digital geo-data in Geoinformation Systems (GIS), quality control has become increasingly important. A high degree of automation is required in order to make quality control ...
  • Multiple-model based update of belgian reference road data 
    Ziems, Marcel; Beyen, J.; Müller, Sönke; Roovers, S.; Heipke, Christian (Göttingen : Copernicus GmbH, 2011)
    This paper describes a semi-automatic system for road update based on high resolution orthophotos and 3D surface models. Potential update regions are identified by an object-wise verification of all existing database ...
  • Multiple-model based verification of japanese road data 
    Ziems, M.; Fujimura, H.; Heipke, Christian; Rottensteiner, Franz (Göttingen : Copernicus GmbH, 2010)
    This paper describes a semi-automatic system for road verification from high resolution orthophotos in an urban context. The system combines several road detection and road verification approaches from current literature ...
  • Multitemporal quality assessment of grassland and cropland objects of a topographic dataset 
    Helmholz, Petra; Büschenfeld, Torsten; Breitkopf, Uwe; Müller, Sören; Rottensteiner, Franz (Göttingen : Copernicus GmbH, 2012)
    As a consequence of the wide-spread application of digital geo-data in geographic information systems (GIS), quality control has become increasingly important to enhance the usefulness of the data. For economic reasons a ...
  • Semiautomatic quality control of topographic reference datasets 
    Becker, Christian; Breitkopf, Uwe; Büschenfeld, Torsten; Busch, A.; Grünreich, D.; Heipke, Christian; Helmholz, Petra; Müller, S.; Ostermann, Jörn; Pahl, M.; Vogt, Karsten; Ziems, M. (Göttingen : Copernicus GmbH, 2010)
    The usefulness and acceptance of spatial information systems are mainly dependent on the quality of the underlying geodata. This paper describes a system for semiautomatic quality control of existing geospatial data via ...
  • The updating of geospatial base data 
    Alrajhi, Muhamad N.; Konecny, Gottfried (Göttingen : Copernicus GmbH, 2018)
    Topopographic mapping issues concern the area coverage at different scales and their age. The age of the map is determined by the system of updating. The United Nations (UNGGIM) have attempted to track the global map ...