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HISTOGRAM STRETCHING [3 records]
Record 1 - internal organization data 2013-06-20
Record 1, English
Record 1, Subject field(s)
- Remote Sensing
- Radar, Radio Guidance and Goniometry
Record 1, Main entry term, English
- simple layout
1, record 1, English, simple%20layout
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
List of derived image products(DIPs) : sub-sampled scenes, sub-scenes and imagettes; basic image processing such as speckle-filtering, appliance of LUT [look-up table], histogram equalization, contrast stretching, etc. ;coloured composite image using multiple data sets; non-orthorectified mosaic with or without a simple layout... 1, record 1, English, - simple%20layout
Record 1, French
Record 1, Domaine(s)
- Télédétection
- Radar, radioguidage et radiogoniométrie
Record 1, Main entry term, French
- présentation simple
1, record 1, French, pr%C3%A9sentation%20simple
proposal, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2007-01-18
Record 2, English
Record 2, Subject field(s)
- Remote Sensing
Record 2, Main entry term, English
- histogram stretching
1, record 2, English, histogram%20stretching
correct, officially approved
Record 2, Abbreviations, English
Record 2, Synonyms, English
- histogram stretch 2, record 2, English, histogram%20stretch
correct
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
Histogram stretching is a method of changing the contrast of an image by adjusting the number of pixel spectral intensity values in each value bin(from 0 to 255) of the image's spectral reflectance intensity histogram. 3, record 2, English, - histogram%20stretching
Record number: 2, Textual support number: 2 CONT
A histogram stretch ensures that maximum contrast is achieved in the imagery. 4, record 2, English, - histogram%20stretching
Record number: 2, Textual support number: 1 OBS
histogram stretching : term officially approved by the RADARSAT-2 Terminology Approval Group(RTAG). 5, record 2, English, - histogram%20stretching
Record 2, French
Record 2, Domaine(s)
- Télédétection
Record 2, Main entry term, French
- étalement d'histogramme
1, record 2, French, %C3%A9talement%20d%27histogramme
correct, masculine noun, officially approved
Record 2, Abbreviations, French
Record 2, Synonyms, French
- étirement d'histogramme 2, record 2, French, %C3%A9tirement%20d%27histogramme
correct, masculine noun
- linéarisation d'histogramme 2, record 2, French, lin%C3%A9arisation%20d%27histogramme
correct, feminine noun
- expansion de la dynamique 2, record 2, French, expansion%20de%20la%20dynamique
correct, feminine noun
Record 2, Textual support, French
Record number: 2, Textual support number: 1 DEF
Traitement [qui] consiste à redistribuer les niveaux de gris (ou les couleurs) de manière à mieux utiliser la palette disponible. 3, record 2, French, - %C3%A9talement%20d%27histogramme
Record number: 2, Textual support number: 1 CONT
L'étirement d'histogramme (aussi appelé "linéarisation d'histogramme" ou "expansion de la dynamique") consiste à répartir les fréquences d'apparition des pixels sur la largeur de l'histogramme. Ainsi, il s'agit d'une opération consistant à modifier l'histogramme de telle manière à répartir au mieux les intensités sur l'échelle des valeurs disponibles. Ceci revient à étendre l'histogramme afin que la valeur d'intensité la plus faible soit à zéro et que la plus haute soit à la valeur maximale. De cette façon, si les valeurs de l'histogramme sont très proches les unes des autres, l'étirement va permettre de fournir une meilleure répartition afin de rendre les pixels clairs encore plus clairs et les pixels foncés proches du noir. 4, record 2, French, - %C3%A9talement%20d%27histogramme
Record number: 2, Textual support number: 2 CONT
L'étalement d'histogramme modifie chaque pixel indépendamment de son voisin, ce qui en fait un traitement réversible, car tous les pixels ayant la même valeur initiale auront de nouveau la même valeur. 3, record 2, French, - %C3%A9talement%20d%27histogramme
Record number: 2, Textual support number: 1 OBS
étalement d'histogramme : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR). 5, record 2, French, - %C3%A9talement%20d%27histogramme
Record number: 2, Textual support number: 1 PHR
Étirement pondéré de l'histogramme. 5, record 2, French, - %C3%A9talement%20d%27histogramme
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 2006-01-18
Record 3, English
Record 3, Subject field(s)
- Remote Sensing
Record 3, Main entry term, English
- non-linear contrast stretching
1, record 3, English, non%2Dlinear%20contrast%20stretching
correct, officially approved
Record 3, Abbreviations, English
Record 3, Synonyms, English
Record 3, Textual support, English
Record number: 3, Textual support number: 1 CONT
Non-linear contrast stretching increases the visibility of areas obscured by shadows and highlights areas of subtle surface differences(eg. ice rises). Histogram equalization highlights areas of subtle surface change. 2, record 3, English, - non%2Dlinear%20contrast%20stretching
Record number: 3, Textual support number: 1 OBS
non-linear contrast stretching: term officially approved by the RADARSAT-2 Terminology Approval Group (RTAG). 3, record 3, English, - non%2Dlinear%20contrast%20stretching
Record 3, Key term(s)
- non linear contrast stretching
- nonlinear contrast stretching
Record 3, French
Record 3, Domaine(s)
- Télédétection
Record 3, Main entry term, French
- étirement non linéaire de contraste
1, record 3, French, %C3%A9tirement%20non%20lin%C3%A9aire%20de%20contraste
proposal, masculine noun, officially approved
Record 3, Abbreviations, French
Record 3, Synonyms, French
- étirement non linéaire du contraste 2, record 3, French, %C3%A9tirement%20non%20lin%C3%A9aire%20du%20contraste
correct, masculine noun
Record 3, Textual support, French
Record number: 3, Textual support number: 1 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. [Ainsi,] les objets dans la scène originale perdent leurs valeurs correctes d'intensité relative [...] 2, record 3, French, - %C3%A9tirement%20non%20lin%C3%A9aire%20de%20contraste
Record number: 3, Textual support number: 1 OBS
étirement non linéaire de contraste : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR). 1, record 3, French, - %C3%A9tirement%20non%20lin%C3%A9aire%20de%20contraste
Record 3, Key term(s)
- étirement non-linéaire du contraste
- étirement non-linéaire de contraste
Record 3, Spanish
Record 3, Textual support, Spanish
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