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MULTIRESOLUTION PYRAMIDAL [1 record]

Record 1 2006-10-26

English

Subject field(s)
  • Computer Graphics
  • Satellite Telecommunications
CONT

A Pyramid is a multiresolution representation of a single image, be it an original (digitized) aerial image, a processed satellite image, or an image representing elevation data (also called a Digital Elevation Model, or DEM). Each Pyramid forms a resolution hierarchy, or pyramid, which is a series of images of increasingly lower spatial resolution. ... Each level of a Pyramid is divided into small, equal-sized subimages called tiles.

OBS

multiresolution pyramid: term officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).

French

Domaine(s)
  • Infographie
  • Télécommunications par satellite
DEF

Méthode de prétraitement destinée à segmenter une image par filtrage adaptatif local et à modifier en cascade le contraste de celle-ci dans une représentation multi-échelle.

OBS

Dans le cas d'une image radar, cette méthode permet en outre de réduire le chatoiement.

OBS

segmentation pyramidale : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).

Spanish

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