Method and apparatus for monitoring a spatial volume and a...

G - Physics – 01 – B

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G01B 11/245 (2006.01) G03B 43/00 (2006.01) G07C 9/00 (2006.01)

Patent

CA 2667600

It is customary to produce a three-dimensional image using a camera pair in order to ensure that people are isolated in a lock for separating people and to check that no more than one person at a time passes through the lock for separating people. It is an object of the invention to improve known systems and to accelerate them. To this end, a plurality of camera pairs are used according to the invention, which monitor a spatial volume which is to be monitored from several spatial directions at the same time. To this end, each camera pair monitors the space, determines a height profile and supplements shadowed points in said height profile with data of other camera pairs. Monitoring of a spatial volume, for example a passage lock.

Pour garantir le passage une par une des personnes dans un sas pour personnes, il est courant d'obtenir au moyen d'une paire de caméras une image en trois dimensions et de vérifier en visionnant celle-ci qu'une seule personne à la fois passe à travers le sas. L'invention a pour but d'améliorer et d'accélérer les systèmes connus. A cet effet, selon l'invention, une pluralité de paires de caméras surveillent simultanément depuis plusieurs directions spatiales un volume spatial à surveiller. Chaque paire de caméras surveille l'espace en question, détermine un profil de hauteur et complète les points d'ombre de ce profil de hauteur par des données d'autres paires de caméras. L'invention peut être utilisée pour surveiller un volume spatial, par exemple un sas de passage.

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