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Fourier transform [2 records]
Record 1 - internal organization data 2011-11-01
Record 1, English
Record 1, Subject field(s)
- Space Physics
Record 1, Main entry term, English
- Fourier transform
1, record 1, English, Fourier%20transform
correct, officially approved
Record 1, Abbreviations, English
- FT 2, record 1, English, FT
correct, officially approved
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A type of two-way frequency transform for identifying and removing unwanted spatial frequency components in an image. 3, record 1, English, - Fourier%20transform
Record number: 1, Textual support number: 1 OBS
The Fourier process is normally used to identify and remove systematic noise spikes, such as regular lines that may have been introduced by a faulty image collection device. The process works as a two-way operation. First the forward transform creates a pair of intermediate raster objects that reveal abnormal data variability. After the values in those raster objects have been edited to remove the data spikes, the inverse transformation creates a raster object with the same image as the original, but with lines or other noise removed. 3, record 1, English, - Fourier%20transform
Record number: 1, Textual support number: 2 OBS
Fourier transform; FT: term and abbreviation officially approved by the RADARSAT-2 Terminology Approval Group (RTAG). 4, record 1, English, - Fourier%20transform
Record 1, French
Record 1, Domaine(s)
- Physique spatiale
Record 1, Main entry term, French
- transformée de Fourier
1, record 1, French, transform%C3%A9e%20de%20Fourier
correct, feminine noun, officially approved
Record 1, Abbreviations, French
- TF 2, record 1, French, TF
correct, feminine noun, officially approved
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Type de transformée de fréquence bidirectionnelle qui identifie et enlève les composantes de fréquence spatiale non désirées dans une image. 3, record 1, French, - transform%C3%A9e%20de%20Fourier
Record number: 1, Textual support number: 1 OBS
[La transformée] de Fourier permet d'avoir des informations fréquentielles et bidirectionnelles sur les fluctuations des données à l'intérieur de la fenêtre d'analyse. 4, record 1, French, - transform%C3%A9e%20de%20Fourier
Record number: 1, Textual support number: 2 OBS
transformée de Fourier; TF : terme et abréviation uniformisés par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR). 2, record 1, French, - transform%C3%A9e%20de%20Fourier
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2004-08-06
Record 2, English
Record 2, Subject field(s)
- Differential and Integral Calculus
- Optics
- Computer Graphics
Record 2, Main entry term, English
- Fourier transform
1, record 2, English, Fourier%20transform
correct
Record 2, Abbreviations, English
- FT 2, record 2, English, FT
correct
Record 2, Synonyms, English
- Fourier's transform 3, record 2, English, Fourier%27s%20transform
correct
- Fourier integral transform 3, record 2, English, Fourier%20integral%20transform
correct
- Fourier transformation 4, record 2, English, Fourier%20transformation
Record 2, Textual support, English
Record 2, French
Record 2, Domaine(s)
- Calcul différentiel et intégral
- Optique
- Infographie
Record 2, Main entry term, French
- transformée de Fourier
1, record 2, French, transform%C3%A9e%20de%20Fourier
correct, feminine noun
Record 2, Abbreviations, French
- TF 2, record 2, French, TF
correct
Record 2, Synonyms, French
- transfouriée 1, record 2, French, transfouri%C3%A9e
correct, feminine noun
- trans-Fourier directe 1, record 2, French, trans%2DFourier%20directe
correct, feminine noun
- image de Fourier 1, record 2, French, image%20de%20Fourier
correct, feminine noun
- transformation de Fourier 3, record 2, French, transformation%20de%20Fourier
feminine noun
Record 2, Textual support, French
Record number: 2, Textual support number: 1 OBS
Dans la pratique et avec la généralisation des techniques de numérisation, on remplace souvent la fonction dont on veut calculer la transformée de Fourier par un échantillonnage. L'intégrale de Fourier est alors remplacée par une somme finie appelée transformée de Fourier discrète. Des algorithmes, dont l'ensemble est appelée transformée de Fourier rapide (anglais Fast Fourier Transform - FFT), ont été mis au point, permettant de réduire le temps d'exécution du calcul d'une transformée de Fourier discrète. 4, record 2, French, - transform%C3%A9e%20de%20Fourier
Record 2, Spanish
Record 2, Campo(s) temático(s)
- Cálculo integral y diferencial
- Óptica
- Gráficos de computadora
Record 2, Main entry term, Spanish
- transformación de Fourier
1, record 2, Spanish, transformaci%C3%B3n%20de%20Fourier
correct, feminine noun
Record 2, Abbreviations, Spanish
Record 2, Synonyms, Spanish
- transformada de Fourier 2, record 2, Spanish, transformada%20de%20Fourier
feminine noun
Record 2, Textual support, Spanish
Record number: 2, Textual support number: 1 DEF
Relación matemática entre la energía en un transitorio y la de un espectro de energía continua de frecuencias de componente adyacente. 3, record 2, Spanish, - transformaci%C3%B3n%20de%20Fourier
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