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IMAGE-TO-IMAGE REGISTRATION [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2023-02-01

English

Subject field(s)
  • Spacecraft
CONT

GOES-9, a three axis stabilized spacecraft, remains stationary in space which allows the [imager and sounder] instruments to be continuously pointed at the earth. The scanning system moves back and forth(i. e., east to west and then west to east) as it moves north to south. While the spacecraft is stationary, it is not absolutely still. Earth location and registration accuracy are [affected] by orbital motions, instrument motion, and thermal distortion. A complicated set of navigation(earth location) and registration(image-to-image location of a landmark) correction schemes are necessary to compensate for these effects.... The registration schemes briefly are : 1) image motion compensation(IMC) and 2) mirror motion compensation(MMC). The IMC removes spacecraft orbit and attitude motion from each image. The MMC automatically corrects for the predictable effects of the instrument mirror motions.

French

Domaine(s)
  • Engins spatiaux

Spanish

Campo(s) temático(s)
  • Naves espaciales
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Record 2 2008-08-01

English

Subject field(s)
  • Radar, Radio Guidance and Goniometry
  • Spacecraft
  • Remote Sensing
DEF

The process of overlaying two or more images of the same scene acquired from different viewpoints, by different sensors and/or at different times so that the pixels of the same coordinates in the images correspond to the same part of the scene.

CONT

Regardless of the image data involved and of the particular application, image registration usually consists of the four major steps: ... direction of control points candidates, control point matching, estimation of the mapping model and resampling and transformation.

OBS

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

French

Domaine(s)
  • Radar, radioguidage et radiogoniométrie
  • Engins spatiaux
  • Télédétection
DEF

Procédé qui consiste à faire coïncider géométriquement plusieurs images, représentant la partie commune d'une scène, obtenues soit à des dates distinctes, [...] soit au même instant, mais dans des bandes spectrales différentes.

OBS

superposition d'images : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).

Spanish

Campo(s) temático(s)
  • Guía radárica, radioguía y radiogoniometría
  • Naves espaciales
  • Teledetección
CONT

¿Cómo es el registro de una imagen? En primer lugar, debemos saber cómo registrar una imagen en otra. En este caso contamos con una imagen principal (Master), es decir, la parte escaneada de un mapa, y una imagen secundaria (Slave). Para empezar, leemos las coordenadas (números de fila y columna) de algunos puntos destacados de la imagen principal y las buscamos en la imagen secundaria. A continuación pedimos al programa que ejecute la transformación del contenido de la imagen completa. Después de este proceso se pueden superponer las dos imágenes.

Save record 2

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