TERMIUM Plus®

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POLYGONAL NETWORK [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2017-07-07

English

Subject field(s)
  • Cartography
  • Remote Sensing
  • Hydrology and Hydrography
DEF

A process by which water bodies show a flat and level water surface in a topographic model.

CONT

Hydro-flattening is the process of creating a lidar [light detection and ranging]-derived DEM [digital elevation model] in which water surfaces appear and behave as they would in traditional topographic DEMs created from photogrammetric digital terrain models (DTMs).

OBS

[A] digital elevation model(DEM) or triangulated irregular network(TIN) derived from LiDAR [light detection and ranging] data will show unpleasant and unnatural water surface due to the fact that LiDAR data does not provide natural breaklines and the elevations of water points is not uniform. Furthermore, hydrologic connectivity in water surfaces is necessary to ensure that the elevation of water surface decreases from upstream(U/S) to downstream(D/S). Therefore, the LiDAR data is hydro-flattened so that water bodies such as streams, rivers, and long reservoirs show an elevation change along their length, whereas ponds, lakes, or other cartographically polygonal water surfaces show a static water surface, consistent with their natural behavior and the surrounding topography...

French

Domaine(s)
  • Cartographie
  • Télédétection
  • Hydrologie et hydrographie
DEF

Processus grâce auquel les masses d'eau se présentent comme des surfaces planes dans un modèle topographique.

Spanish

Campo(s) temático(s)
  • Cartografía
  • Teledetección
  • Hidrología e hidrografía
DEF

Proceso por el cual las masas de agua aparecen como superficies planas en un modelo topográfico.

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Record 2 2009-09-21

English

Subject field(s)
  • Telecommunications
  • Artificial Intelligence
DEF

... a polygon of n circuits which ends at the starting point after having served n centres.

French

Domaine(s)
  • Télécommunications
  • Intelligence artificielle
CONT

Un réseau polygonal est constitué par un polygone de n circuits se refermant sur lui-même après avoir desservi n centres.

Spanish

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