TERMIUM Plus®

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NONLINEAR STRETCH [1 record]

Record 1 2002-03-25

English

Subject field(s)
  • Remote Sensing
DEF

An image enhancement technique that allows for the variable modification of pixel DNs [diginal numbers] as opposed to linear stretch.

OBS

If the data histogram for an image has more than one mode and/or is not symmetrical, a nonlinear stretch such as histogram equalization or piecewise stretch may be a better contrast enhancement choice ...

OBS

non-linear stretching: term officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).

Key term(s)
  • non linear stretch
  • non linear stretching

French

Domaine(s)
  • Télédétection
DEF

Technique de rehaussement radiométrique qui étale les niveaux de gris d'une image de manière non proportionnelle.

CONT

La méthode d'étirement non linéaire du contraste a un inconvénient important. Chaque valeur dans l'image d'entrée peut avoir plusieurs contrastes de valeurs dans l'image de sortie.

OBS

étirement non linéaire : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).

Key term(s)
  • étalement non-linéaire
  • étirement non-linéaire

Spanish

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