| 主权项 |
1. A method for the determination of a set of classification parameters for the classification of bank notes in different classes by means of a bank note processing apparatus, wherein the method comprises the following steps:
sensing measurement data for a plurality of reference bank notes having known properties by means of a sensor device of the bank note processing apparatus, at least some of the reference bank notes being provided with at least one adhesive strip, wherein the at least one adhesive strip has a color different from at least one color of a background of one of the plurality of reference bank notes in the surrounding of the at least one adhesive strip, such that a color of the at least one adhesive strip corresponds to a known adhesive strip size; determining a set of classification parameters; ascertaining the distribution of the plurality of reference bank notes over the different classes on the basis of the measurement data of the reference bank notes and the set of classification parameters; comparing the distribution over the different classes, which was determined for the plurality of reference bank notes, with the optimal distribution of the reference bank notes over the different classes, which was ascertained from the known properties of the plurality of reference bank notes; and if the two distributions deviate from each other, adjusting the set of classification parameters until the distribution of the plurality of reference bank notes over the different classes, which was determined on the basis of the measurement data of the reference bank notes and the changed set of classification parameters, and the optimal distribution of the reference bank notes over the different classes, which was ascertained from the known properties of the plurality of reference bank notes, no longer deviate from each other or the deviation between these distributions is acceptable. |
