VSE knjižnice (vzajemna bibliografsko-kataložna baza podatkov COBIB.SI)
  • Computationally efficient method for the generation of a digital terrain model from airborne LiDAR data using connected operators
    Mongus, Domen ; Žalik, Borut
    This paper proposes a new mapping schema, named mapping, for filtering nonground objects fromLiDAR data, and the generation of a digital terrain model. By extending the CSL model, mapping extracts ... the most contrasted connected-components from top-hat scale-space and attributes them for an adaptive multicriterion filter definition. Areas of the most contrasted connected-components and the standard deviations of contained pointsʼ levels are considered for this purpose. Computational efficiency is achieved by arranging the input LiDAR data into a grid, represented by a Max-Tree. Since aconstant number of passes over the grid is required, the time complexity of the proposed method is linear according to the number of grid-cells. As confirmed by the experiments, the average CPU execution time decreases by nearly 98%, while the average accuracy improves by up to 10% in comparison with the related method.
    Vir: IEEE journal of selected topics in applied earth observations and remote sensing. - ISSN 1939-1404 (Vol. 7, no. 1, Jan. 2014, str. 340-351)
    Vrsta gradiva - članek, sestavni del
    Leto - 2014
    Jezik - angleški
    COBISS.SI-ID - 16937494
    DOI

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