G - Physics – 01 – S
Patent
G - Physics
01
S
G01S 7/487 (2006.01) F41G 3/14 (2006.01) G01S 17/89 (2006.01)
Patent
CA 2451782
The invention relates to a method and a corresponding device with which images (A, B) for the same sensing range, however in different wavelength ranges (P, N1, N2), are recorded at the same time or about the same time, and with which a signal to be detected is recorded for an image (A) serving as a P-image, and the wavelength of the signal is suppressed for an image (B) serving as an N- image. The intensity of the background in the P-image (A) is deduced from the N-image (B) while using a model for the interfering radiation or background radiation (2). The position of the signal to be detected is determined by comparing the image contents of the P-image (A) and the background image (C) derived from the N-image (B).
L'invention concerne un procédé et un dispositif correspondant permettant d'effectuer des prises de vues (A, B) simultanément ou approximativement en même temps, pour la même plage de détection, dans des plages de longueurs d'ondes différentes (P, N1, N2), qui permettent de capter un signal à détecter pour une image (A) servant d'image-P et de supprimer la longueur d'ondes du signal pour une image (B) servant d'image-N. l'intensité du fond de l'image-P (A) est déduite de l'image-N (B), à l'aide d'un modèle pour rayonnement perturbateur ou rayonnement de fond (2). Une comparaison entre les contenus d'image de l'image-P (A) et de l'image de fond (C) dérivée de l'image-N (B) permet de déterminer la position du signal à détecter.
Gowling Lafleur Henderson Llp
Leica Geosystems Ag
LandOfFree
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