Image analysis – Applications – Reading paper currency
Patent
1995-02-27
1998-03-03
Boudreau, Leo
Image analysis
Applications
Reading paper currency
382320, 382321, G06K 900
Patent
active
057244383
ABSTRACT:
An improved method of generating modified scanned or master patterns for use in a discrimination system capable of identifying one or more currency bills. Each of the scanned and master patterns comprises a sequence of data values representing analog variations of characteristic information along a segment of a bill and each pattern has a leading end and a trailing end. Each of the data values has an associated sequence position. The modified scanned or master patterns are generated by designating either the scanned pattern or the master pattern for modification and inserting a predetermined number, R, of data values at either the trailing end of the sequence of data values of the designated pattern when the modification is performed in the forward direction or the leading end of the sequence of data values of the designated pattern when the modification is performed in the backward direction. This modification effectively removes R data values from the leading or trailing end of the designated pattern. Either the last R data values of the designated pattern are set equal to the last R data values of the non-designated pattern when the modification is performed in the forward direction or the first R data values of the designated pattern are set equal to the first R data values of the non-designated pattern when the modification is performed in the backward direction. Alternatively, the modified master patterns are generated by inserting R data samples at the leading or trailing ends of the master patterns and by setting the first R or last R data samples of the modified master pattern equal to zero.
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Boudreau Leo
Cummins-Allison Corp.
Tran Phuoc
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