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Method and device for measuring the angular position of a rectilinear contrasting edge of an object, and system for fixation and tracking a target comprising at least one such contrasting edge | Verfahren und Vorrichtung zur Messung der Winkelstellung einer geradlinigen Kontrastkante eines Gegenstands und System zur Fixierung und Verfolgung eines Ziels, das mindestens eine solche Kontrastkante umfasst | Procédé et dispositif pour mesurer la position angulaire de l'angle d'apposition rectiligne d'un objet, système pour fixer et suivre une cible comportant au moins un de ces bords d'apposition

Patentnummer:EP2341312B1
IPC Hauptklasse:G01B001102
Anmelder:
Erfinder:
Anmeldung:15.12.09
Offenlegung:15.12.09
Patenterteilung:20.09.17

Abstract / Hauptanspruch
The present invention relates to a method for measuring the angular position of a contrasting edge of an object having a luminance transition zone which is substantially rectilinear in a given direction and separates two regions of different luminances. This method comprises the functional steps of:
- carrying out, in a transverse direction different from the given direction, an amplitude modulation of the signals delivered by a first and a second optical sensor; and
- calculating an output signal (Y out(t)) starting from the signals delivered by the first and the second optical sensors (D1, D2) as a function of the angular position of the luminance transition zone.

Device and set of devices for measuring the angular position of a contrasting edge and steering aid system for fixation and tracking a target comprising at least one such contrasting edge.

EP2341312B1


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