Method and device for controlling valuable or security items, in particular banknotes

摘要

A method of controlling printed items, in particular banknotes, involving two printing stages, the method including the steps of acquiring a controlled-item image; acquiring from the controlled-item image a deviation value between images printed in the two printing stages; acquiring a specimen-item image having the aforementioned deviation value; and comparing the controlled-item image with the specimen-item image; the specimen-item image being selected from a number of images memorized beforehand in a specimen image memory.