Method of handling transmittals including a graphic...

B - Operations – Transporting – 07 – C

Patent

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B07C 3/14 (2006.01) G06K 9/66 (2006.01)

Patent

CA 2688163

In a postal transmittal sorting method, signatures are derived (13) from the images of the transmittals and are used as identifiers for the transmittals in the sorting process. The signatures are grouped together (43) into categories of signatures or graphic classes (CG) according to a certain criterion of graphic similarity to calculate a mean signature value for each graphic class. For each graphic class concerned, an activity of the mean signature value is analysed to detect a significant activity of a block of information in the digital images. The results of said activity detection are used to search for similarity in a second sorting pass between a current signature and signatures stored in a first sorting pass.

Dans un procédé de tri postal d'envois, des signatures sont dérivées (13) des images des envois et servent d'identificateurs pour les envois dans le processus de tri. On regroupe (43) les signatures en catégories de signatures ou classes graphiques (CG) selon un certain critère de similitude graphique pour calculer une valeur moyenne de signature pour chaque classe graphique. On analyse pour chaque classe graphique considérée une activité de la valeur moyenne de signature pour détecter une activité significative d'un bloc d'information dans les images numériques. On exploite les résultats de ladite détection d'activité pour la recherche de concordance en seconde passe de tri entre une signature courante et des signatures enregistrées en première passe de tri.

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