Improvement to image acquisition by push-broom scanning

Details Improvement to image acquisition by push-broom scanning Improvement to image acquisition by push-broom scanning

H - Electricity

04

N

H04N 3/08 (2006.01) H04N 3/15 (2006.01)

Patent

CA 2290673

The invention concerns a method for acquiring and processing an earth satellite observation image using at least an array or matrix of load transfer sensors moving past opposite a zone under observation, which consists in acquiring a plurality of pixels according to a given sampling. The invention is characterised in that said sampling network includes "e" sub-systems corresponding to a sampling verifying the Shannon theory, where "e" is an integer or rational number greater than 1, and in using a process for interpolating a noise-corrected image whereof the resolution corresponds to that of a sampling sub-system from the initially acquired image pixels.

Procédé d'acquisition et de traitement d'une image d'observation satellitaire de la terre au moyen d'au moins une barrette ou une matrice de détecteurs de type à transfert de charge défilant en regard d'une zone observée, dans lequel on réalise une acquisition d'une pluralité de pixels selon un échantillonnage donné, caractérisé en ce que le réseau de cet échantillonnage inclut e sous réseaux correspondant à un échantillonnage vérifiant la condition de Shannon, où e est un nombre entier ou rationnel supérieur à 1, et en ce qu'on met en ~uvre un traitement permettant d'interpoler une image débruitée dont la résolution correspond à celle d'un sous-réseau d'échantillonnage à partir des pixels de l'image initialement acquise.

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