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Terrain prickliness: Theoretical grounds for high complexity viewsheds

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985807%3A_____%2F21%3A00548611" target="_blank" >RIV/67985807:_____/21:00548611 - isvavai.cz</a>

  • Alternative codes found

    RIV/68407700:21240/21:00353646

  • Result on the web

    <a href="http://dx.doi.org/10.4230/LIPIcs.GIScience.2021.II.10" target="_blank" >http://dx.doi.org/10.4230/LIPIcs.GIScience.2021.II.10</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.4230/LIPIcs.GIScience.2021.II.10" target="_blank" >10.4230/LIPIcs.GIScience.2021.II.10</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Terrain prickliness: Theoretical grounds for high complexity viewsheds

  • Original language description

    An important task in terrain analysis is computing viewsheds. A viewshed is the union of all the parts of the terrain that are visible from a given viewpoint or set of viewpoints. The complexity of a viewshed can vary significantly depending on the terrain topography and the viewpoint position. In this work we study a new topographic attribute, the prickliness, that measures the number of local maxima in a terrain from all possible angles of view. We show that the prickliness effectively captures the potential of terrains to have high complexity viewsheds. We present near-optimal algorithms to compute it for TIN terrains, and efficient approximate algorithms for raster DEMs. We validate the usefulness of the prickliness attribute with experiments in a large set of real terrains.

  • Czech name

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

  • OECD FORD branch

    10201 - Computer sciences, information science, bioinformathics (hardware development to be 2.2, social aspect to be 5.8)

Result continuities

  • Project

    <a href="/en/project/GJ19-06792Y" target="_blank" >GJ19-06792Y: Structural properties of visibility in terrains and farthest color Voronoi diagrams</a><br>

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2021

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Article name in the collection

    11th International Conference on Geographic Information Science (GIScience 2021) - Part II

  • ISBN

    978-3-95977-208-2

  • ISSN

    1868-8969

  • e-ISSN

  • Number of pages

    16

  • Pages from-to

    10

  • Publisher name

    Schloss Dagstuhl -- Leibniz-Zentrum für Informatik

  • Place of publication

    Dagstuhl

  • Event location

    Poznan / Online

  • Event date

    Sep 27, 2021

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article