TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

IMAGE CENTROID [1 record]

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Alphabetical list of terms

Record 1 2004-03-16

English

Subject field(s)
  • Optics
  • Practical Astronomy
DEF

... the mean position of the ray intersections with the focal surface ...

CONT

Image centroid measurements are the most used information in astronomical adaptive optics systems for the wavefront reconstruction.

French

Domaine(s)
  • Optique
  • Astronomie pratique
CONT

Dans le cas d'un front d'onde plan, en négligeant les défauts de la matrice de micro-lentille et de la caméra, l'image enregistrée est constituée d'une matrice régulière de points focaux (appelés centroïdes) qui couvrent chacun plusieurs capteurs CCD. Si, par contre, le front d'onde est perturbé par des aberrations, la matrice des centroïdes est déformée. [...] Les positions des centroïdes sont calculées précisément en localisant le barycentre de chaque centroïde.

Spanish

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© Public Services and Procurement Canada, 2024
TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
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