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
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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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
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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
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