Feature-based enhancement of multi-resolution topographic surface

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F16%3A10328291" target="_blank" >RIV/00216208:11310/16:10328291 - isvavai.cz</a>

Výsledek na webu

<a href="http://iccgis2016.cartography-gis.com/6iccgis-2016-proceedings/" target="_blank" >http://iccgis2016.cartography-gis.com/6iccgis-2016-proceedings/</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.13140/RG.2.2.33019.92964" target="_blank" >10.13140/RG.2.2.33019.92964</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Feature-based enhancement of multi-resolution topographic surface

Popis výsledku v původním jazyce

Many representations of topographic surface providing graphical, three-dimensional, multi-resolution model of entire planet have been developed. However, current solutions to such a representation of topographic surface suffer from the lack of geometric flexibility and accuracy on boundaries with models of other geographic features. Therefore, this work focuses on a more functional representation of a multi-resolution topographic surface. For this sake we introduce a simplification algorithm, which is designed to build the multiple LOD database of features. The method utilizes the Global Indexing Grid (GIG) as a paging mechanism. For any position of the observer within the 3D virtual environment, the indexing structure determines the position-dependent LOD of currently visible features and underlying terrain. The simplification algorithm guarantees for any observer position the preservation of topological relations between simplified geometries of features in the position-dependent LOD visualization of the Earth surface. Based on the precomputed classification of the elevation points and multiple LOD database of features, the surface is reconstructed using constrained Delaunay triangulation at run-time.

Název v anglickém jazyce

Feature-based enhancement of multi-resolution topographic surface

Popis výsledku anglicky

Many representations of topographic surface providing graphical, three-dimensional, multi-resolution model of entire planet have been developed. However, current solutions to such a representation of topographic surface suffer from the lack of geometric flexibility and accuracy on boundaries with models of other geographic features. Therefore, this work focuses on a more functional representation of a multi-resolution topographic surface. For this sake we introduce a simplification algorithm, which is designed to build the multiple LOD database of features. The method utilizes the Global Indexing Grid (GIG) as a paging mechanism. For any position of the observer within the 3D virtual environment, the indexing structure determines the position-dependent LOD of currently visible features and underlying terrain. The simplification algorithm guarantees for any observer position the preservation of topological relations between simplified geometries of features in the position-dependent LOD visualization of the Earth surface. Based on the precomputed classification of the elevation points and multiple LOD database of features, the surface is reconstructed using constrained Delaunay triangulation at run-time.

Druh

D - Stať ve sborníku

CEP obor

DE - Zemský magnetismus, geodesie, geografie

OECD FORD obor

—

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název statě ve sborníku

6th International Conference on Cartography and GIS

ISBN

—

ISSN

1314-0604

e-ISSN

—

Počet stran výsledku

8

Strana od-do

643-650

Název nakladatele

Bulgarian Cartographic Association

Místo vydání

1, Chr. Smirnenski Blvd. Sofia, Bulgaria

Místo konání akce

Albena, Bulgaria

Datum konání akce

13. 6. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000385790600067