Solystic

Gilles Arcas-Luque

Bruno Volta

Belkacem Benyoub

Olivier Pietri

The method of sorting pre-sorted mailpieces in a postal sorting machine comprises the steps consisting in: detecting loading in the feed inlet of the machine of a batch of mailpieces pre-sorted by a mailer of the mailpieces on the basis of their delivery addresses; and, in response to said detection, loading, in the reference database of the address recognition system, a lexicon comprising the delivery addresses for only the pre-sorted mailpieces of the batch, and, by means of the monitoring and control unit and for each current mailpiece, comparing the result of the OCR reading with said delivery addresses of the lexicon so as to recognize the delivery address of said current mailpiece.

Method of sorting pre-sorted mailpieces

In order to segment a digital image of a postal packet in order to read a postal address (AP) automatically on said packet, the method consists: in subdividing () the image into image blocks of identical size; in applying () processing based on a Hough transform to each image block in order to identify in the image block in question a privileged direction for the distribution of image points in the block under consideration; in grouping together () contiguous image blocks within the image having a common privileged direction in order to define () a rectangular zone of interest (ZI) containing the group of said contiguous blocks having a common privileged direction in such a manner that said rectangular zone of interest has a longitudinal edge parallel to said common privileged direction; and in applying the automatic address-recognition algorithm to said zone of interest in the image in order to read a postal address automatically.

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Cachan, France

Gilles Arcas-Luque