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Filtracja danych lotniczego skaningu laserowego z wykorzystaniem metody aktywnych powierzchni

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EN
Filtering of aerial laser scanner data by active surface model
Języki publikacji
PL
Abstrakty
EN
Laser scanner data sets contain a considerable number of gross errors which are reflections from objects that lie above the terrain surface, i.e. trees, houses. If Digital Terrain Model is interpolated such points need to be removed from data files. For automatic filtering of gross errors an algorithm based on active surface model (flakes) was proposed. This model constitutes a variational problem solution in which total energy comprising external and internal energy is minimized. Internal energy describes geometric properties of modelled surface and, it is the weighted sum of its inclination and curvature. External energy measures the deviation of the model from the given data. The Ekler equation that is equivalent to variational problem is discretized with finite difference method and solved iteratively. A model for external energy that enables to make flakes robust to gross errors was formulated. Filtering features of the method were presented on the laser scanner data. Hints for practical application of presented method were given.
Czasopismo
Rocznik
Strony
35--42
Opis fizyczny
Bibliogr. 18 poz.
Twórcy
autor
Bibliografia
  • 1. Axelsson P., 1999: Processing of laser scanner data . algorithms and applications. ISPRS Journal of Photogrammetry and Remote Sensing, 54(2), 138-147.
  • 2. Axelsson P., 2000: DEM generation from laser scanner data using adaptive TIN models. International
  • 3. Borkowkski A., Burkhardt D., Meier S., 1997: Zur optimalen Approximation von Höhenprofilen. Österr. Zeitschrift für Vermessung und Geoinformation, 182-285.
  • 4. Borkowski A., 2004: Modellierung von Oberflächen mit Diskontinuitäten. Deutsche Geodätische Kommission, Reihe C, Heft Nr 575.
  • 5. Briese C., Pfeifer N., Dorninger P., 2002: Applications of the robust interpolation for DTM determination. Symposium ISPRS Commision III, Photogrammetric Computer Vision, Graz,. International Archives of Photogrammetry and Remote Sensing, Vol. XXXIV / 3A, 55-61.
  • 6. Bronstein I., Semendjajew K., 1962: Taschenbuch der Mathematik. B.G. Teubner, Leipzig.
  • 7. Elmqvist M., Jungert E., Persson A., Soderman U., 2001. Terrain modelling and analysis using laser scanner data. International Archives of Photogrammetry and Remote Sensing, Vol. XXXIV-3/W4, Annopolis, Maryland, 219-227.
  • 8. Elmqvist M., 2002: Ground surface estimation from airborne laser scanner data using active shape models. ISPRS, Commission III, Symposium Photogrammetric Computer Vision, Graz, 114-118.
  • 9. Kass M., Witkin A., Terzopoulos D., 1987: Snakes: Active contour models. Proceedings of the First International Conference on Computer Vision, IEEE Comput. Soc. Press, 259-268.
  • 10. Kraus K., 2000: Photogrammetrie. Band 3. Topographische Informatonssysteme. Dümmler, Köln.
  • 11. Kraus K., Pfeifer N., 2001: Advanced DTM generatin from LIDAR data. International Archives of Photogrammetry and Remote Sensing, Vol. XXXIV-3/W4, Annopolis, Maryland, 23-30.
  • 12. Marmol U., 2003: Pozyskiwanie numerycznego modelu powierzchni topograficznej (NMPT) w oparciu o dane wysokościowe pochodzące z lotniczego skaningu laserowego. Archiwum Fotogrametrii, Kartografii i Teledetekcji. Vol. 13B, s. 419-426.
  • 13. Marmol U., Jachimski J., 2004: A FFT based method of filtering airborne laser scanner data. ISPRS Congress, Istambul, Commision3. http://www.isprs.org/commission3/wg3.
  • 14. Roggero M., 2001: Airborne laser scanning: Clustering in row data. International Archives of Photogrammetry and Remote Sensing, Vol. XXXIV-3/W4, Annopolis, Maryland, 227-232.
  • 15. Sithole G., 2001: Filtering of laser altimetry data using a slope adaptive filter. International Archives of Photogrammetry and Remote Sensing, Vol. XXXIV-3/W4, Annopolis, Maryland, 203-210.
  • 16. Sithole G., Vosselman G., 2003: Report ISPRS: Comparison of filters, http://www.isprs.org/commission3/ wg3.
  • 17. Sithole G., Vosselman G., 2004: Experimental comparison of filter algorithms for bare-Earth extraction from airborne laser scanning point clouds. ISPRS Journal of Photogrammetry and Remote Sensing, Vo. 59, 85-101.
  • 18. Vosselman G., Maas, H.G., 2001: Adjustment and filtering of raw laser altimetry data. OEEPE Workshop on Airborne Laserscanning and Interferometric SAR for Detailed Digital Elevation Models, Stockholm.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPW9-0005-0064
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