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UNSUPERVISED CLASSIFICATION [5 records]
Record 1 - internal organization data 2014-12-12
Record 1, English
Record 1, Subject field(s)
- Remote Sensing
- Mathematical Geography
Record 1, Main entry term, English
- classification
1, record 1, English, classification
correct, officially approved
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
[The] process of assigning individual pixels of an image to categories, generally on the basis of spectral reflectance characteristics. 2, record 1, English, - classification
Record number: 1, Textual support number: 1 OBS
Digital image classification is the process of assigning a pixel(or groups of pixels) of remote sensing image to a land cover class. The objective is to classify each pixel into only one class(crisp or hard classification) or to associate the pixel with many classes(fuzzy or soft classification). The classification techniques may be categorized either on the basis of training process(supervised and unsupervised) or on the basis of theoretical model(parametric and non-parametric). Several classification algorithms(classifiers) have been developed under this categorization. 3, record 1, English, - classification
Record number: 1, Textual support number: 2 OBS
classification: term officially approved by the RADARSAT-2 Terminology Approval Group (RTAG). 4, record 1, English, - classification
Record 1, French
Record 1, Domaine(s)
- Télédétection
- Géographie mathématique
Record 1, Main entry term, French
- classification
1, record 1, French, classification
correct, feminine noun, officially approved
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Opération qui consiste à segmenter la scène en différentes catégories en s'appuyant sur les valeurs radiométriques fournies par différentes images. 2, record 1, French, - classification
Record number: 1, Textual support number: 1 CONT
Dans une mise en œuvre au niveau du pixel, la classification consiste à analyser et partitionner l'histogramme à N dimensions correspondant à l'ensemble de N images. Si le choix des images est adapté aux catégories que l'on cherche, les pixels appartenant à la même classe doivent apparaître regroupés dans l'histogramme. 2, record 1, French, - classification
Record number: 1, Textual support number: 1 OBS
classification: terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR). 3, record 1, French, - classification
Record number: 1, Textual support number: 1 PHR
Classification ascendante hiérarchique, automatique agrégative, hiérarchisée. 3, record 1, French, - classification
Record number: 1, Textual support number: 2 PHR
Filtrage de la classification. 3, record 1, French, - classification
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Teledetección
- Geografía matemática
Record 1, Main entry term, Spanish
- clasificación
1, record 1, Spanish, clasificaci%C3%B3n
correct, feminine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 CONT
El objetivo de la clasificación de una imagen de satélite es asignar píxeles a una, dos o más clases, que pueden predefinirse o crearse. 1, record 1, Spanish, - clasificaci%C3%B3n
Record 2 - internal organization data 2013-12-31
Record 2, English
Record 2, Subject field(s)
- Remote Sensing
- Cartography
Record 2, Main entry term, English
- unsupervised classification
1, record 2, English, unsupervised%20classification
correct, officially approved
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
Any classification method where the algorithm determines the criteria for classification by examining the data. 2, record 2, English, - unsupervised%20classification
Record number: 2, Textual support number: 1 OBS
This [classification method is used] in contrast to supervised classification methods where an analyst provides criteria for classification. 2, record 2, English, - unsupervised%20classification
Record number: 2, Textual support number: 2 OBS
unsupervised classification : term officially approved by the RADARSAT-2 Terminology Approval Group(RTAG). 3, record 2, English, - unsupervised%20classification
Record 2, French
Record 2, Domaine(s)
- Télédétection
- Cartographie
Record 2, Main entry term, French
- classification non dirigée
1, record 2, French, classification%20non%20dirig%C3%A9e
correct, feminine noun, officially approved
Record 2, Abbreviations, French
Record 2, Synonyms, French
- classification non supervisée 2, record 2, French, classification%20non%20supervis%C3%A9e
avoid, calque, feminine noun
Record 2, Textual support, French
Record number: 2, Textual support number: 1 DEF
Méthode probabiliste d'analyse d'un fichier de données, destinée à créer des classes de pixels par des traitements mathématiques. 3, record 2, French, - classification%20non%20dirig%C3%A9e
Record number: 2, Textual support number: 1 OBS
Les trois méthodes de classification non dirigée parmi les plus utilisées sont : les nuées dynamiques, la classification ascendante hiérarchique, l'identification des pics d'histogramme. 4, record 2, French, - classification%20non%20dirig%C3%A9e
Record number: 2, Textual support number: 2 OBS
classification non dirigée : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR). 4, record 2, French, - classification%20non%20dirig%C3%A9e
Record 2, Spanish
Record 2, Campo(s) temático(s)
- Teledetección
- Cartografía
Record 2, Main entry term, Spanish
- clasificación no supervisada
1, record 2, Spanish, clasificaci%C3%B3n%20no%20supervisada
correct, feminine noun
Record 2, Abbreviations, Spanish
Record 2, Synonyms, Spanish
Record 2, Textual support, Spanish
Record number: 2, Textual support number: 1 CONT
Suponiendo que los datos han pasado ya todo tipo de correcciones de tipo geométrico o atmosférico, existen dos métodos complementarios para afrontar el problema de la generación de clases, estos son válidos tanto en imágenes de satélite como en cualquier otro campo: No establecer ninguna clase a priori, aunque es necesario determinar el número de clases que queremos establecer, y dejar que las defina un procedimiento automático (clasificación no supervisada). 1, record 2, Spanish, - clasificaci%C3%B3n%20no%20supervisada
Record 3 - internal organization data 2013-06-20
Record 3, English
Record 3, Subject field(s)
- Remote Sensing
- Cartography
Record 3, Main entry term, English
- automated numerical method
1, record 3, English, automated%20numerical%20method
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
Record 3, Textual support, English
Record number: 3, Textual support number: 1 CONT
Automated numerical methods can include supervised and unsupervised classification and image segmentation algorithms... These methods provide alternatives for extracting geological information in a systematic and unbiased manner, although visual interpretation is commonly judged to outperform methods of automated pattern recognition. 2, record 3, English, - automated%20numerical%20method
Record 3, French
Record 3, Domaine(s)
- Télédétection
- Cartographie
Record 3, Main entry term, French
- méthode numérique automatisée
1, record 3, French, m%C3%A9thode%20num%C3%A9rique%20automatis%C3%A9e
correct, feminine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record 3, Spanish
Record 3, Textual support, Spanish
Record 4 - internal organization data 2007-01-31
Record 4, English
Record 4, Subject field(s)
- Remote Sensing
- Mathematical Geography
Record 4, Main entry term, English
- checked classification
1, record 4, English, checked%20classification
correct, officially approved
Record 4, Abbreviations, English
Record 4, Synonyms, English
Record 4, Textual support, English
Record number: 4, Textual support number: 1 DEF
Classification that is either supervised, semi-supervised, unsupervised, visually interpreted with or without the assistance of a computer and that has been controlled on the ground or by means of aerial photography to ensure end result reliability. 2, record 4, English, - checked%20classification
Record number: 4, Textual support number: 1 OBS
checked classification: term officially approved by the RADARSAT-2 Terminology Approval Group (RTAG). 2, record 4, English, - checked%20classification
Record 4, French
Record 4, Domaine(s)
- Télédétection
- Géographie mathématique
Record 4, Main entry term, French
- classification contrôlée
1, record 4, French, classification%20contr%C3%B4l%C3%A9e
correct, feminine noun, officially approved
Record 4, Abbreviations, French
Record 4, Synonyms, French
Record 4, Textual support, French
Record number: 4, Textual support number: 1 DEF
Classification dirigée, ou non dirigée, ou semi-dirigée, ou établie par interprétation visuelle assistée ou non par ordinateur, qui a fait l'objet de contrôles sur le terrain et (ou) sur photos aériennes pour apprécier le niveau de fiabilité finale obtenue. 2, record 4, French, - classification%20contr%C3%B4l%C3%A9e
Record number: 4, Textual support number: 1 OBS
classification contrôlée : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR). 3, record 4, French, - classification%20contr%C3%B4l%C3%A9e
Record 4, Spanish
Record 4, Campo(s) temático(s)
- Teledetección
- Geografía matemática
Record 4, Main entry term, Spanish
- clasificación controlada
1, record 4, Spanish, clasificaci%C3%B3n%20controlada
correct, feminine noun
Record 4, Abbreviations, Spanish
Record 4, Synonyms, Spanish
Record 4, Textual support, Spanish
Record 5 - internal organization data 2007-01-31
Record 5, English
Record 5, Subject field(s)
- Remote Sensing
- Mathematical Geography
Record 5, Main entry term, English
- semi-supervised classification
1, record 5, English, semi%2Dsupervised%20classification
correct, officially approved
Record 5, Abbreviations, English
Record 5, Synonyms, English
- semi supervised classification 2, record 5, English, semi%20supervised%20classification
correct
Record 5, Textual support, English
Record number: 5, Textual support number: 1 CONT
[In the] semi supervised classification... the user will define some training areas which are well known(waterbodies, urban area, non-mixed forest, etc.). These signatures will be put into the unsupervised classification as "seed signatures". Considering this the other clusters will be calculated. Then the "maximum likelyhood" classifier will be used. 3, record 5, English, - semi%2Dsupervised%20classification
Record number: 5, Textual support number: 1 OBS
semi-supervised classification: term officially approved by the RADARSAT-2 Terminology Approval Group (RTAG). 4, record 5, English, - semi%2Dsupervised%20classification
Record 5, French
Record 5, Domaine(s)
- Télédétection
- Géographie mathématique
Record 5, Main entry term, French
- classification semi-dirigée
1, record 5, French, classification%20semi%2Ddirig%C3%A9e
correct, feminine noun, officially approved
Record 5, Abbreviations, French
Record 5, Synonyms, French
- classification semi-supervisée 2, record 5, French, classification%20semi%2Dsupervis%C3%A9e
avoid, feminine noun
Record 5, Textual support, French
Record number: 5, Textual support number: 1 DEF
Méthode partiellement probabiliste destinée à obtenir des classes de pixels par un traitement des données fondé sur des propriétés physiques connues a priori. 3, record 5, French, - classification%20semi%2Ddirig%C3%A9e
Record number: 5, Textual support number: 1 OBS
L'emploi du calque lexical classification semi-supervisée pour désigner une classification semi-dirigée est fautif. 2, record 5, French, - classification%20semi%2Ddirig%C3%A9e
Record number: 5, Textual support number: 2 OBS
classification semi-dirigée : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR). 4, record 5, French, - classification%20semi%2Ddirig%C3%A9e
Record 5, Spanish
Record 5, Campo(s) temático(s)
- Teledetección
- Geografía matemática
Record 5, Main entry term, Spanish
- clasificación semisupervisada
1, record 5, Spanish, clasificaci%C3%B3n%20semisupervisada
correct, feminine noun
Record 5, Abbreviations, Spanish
Record 5, Synonyms, Spanish
Record 5, Textual support, Spanish
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