Method for forming and/or updating dictionaries for the...

G - Physics – 06 – K

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G06K 9/62 (2006.01) G06K 9/72 (2006.01)

Patent

CA 2379856

According to the invention, the read results of an agreed number of transmission images obtained by the OCR reader, divided into clearly legible and rejected read results are buffered. Subsequently, classes of words or related word groups of the buffered and rejected read results are formed, each consisting of n address words, n = 1, 2, ..., a, with word spacing m, m = 0, 1, ..., b. The respective words in said classes do not fall below a specific degree of similarity among themselves, in relation to one specific n and m value. At least the representatives of those classes whose frequency exceeds a defined value are included in the dictionary or dictionaries of the corresponding address zones.

Dans le procédé selon l'invention, on stocke temporairement les résultats de lecture, obtenus par le lecteur optique, d'un nombre convenu d'images d'envois, après subdivision en résultats de lecture lus clairement et en résultats de lecture refusés. On constitue ensuite des classes de mots ou de groupes de mots associés des résultats de lecture refusés et sauvegardés temporairement, ces classes contenant n mots d'adresse - avec n égal à 1, 2, ..., a qui présentent les écarts de mot m - avec m égal à 0, 1, ..., b et ne sont pas inférieurs entre eux à une proportion de similitude définie, par rapport à une valeur n et m précise. Au moins des représentants des classes dont la fréquence dépasse une valeur fixée sont enregistrés dans le ou les dictionnaires des zones d'adresses affectées.

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