Pattern discriminating apparatus

Details Pattern discriminating apparatus Pattern discriminating apparatus

1981-12-14

1984-12-25

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

382 29, G06K 944

Patent

active

044908466

ABSTRACT:
A pattern discriminating apparatus with an interval integrating section for integrating detection signals from a detecting section for each of a number of intervals of a bill. A bill is supplied to the detecting section which detects, for example, a magnetism pattern of the bill. The detection signal from the detecting section is supplied to the interval integrating section as well as to a total integrating section. The total integrating section integrates the detection signals for one bill. The signals from the interval integrating section are temporarily stored in a memory section, are supplied to a smoothing section, and are smoothed thereby. The smoothed signal is supplied to normalizing section to be normalized based on the signal supplied from the total integrating section. The normalized signal and a signal output from a pattern memory section are supplied to a subtracting section for taking the difference between these two signals for each of the intervals. The difference signal thus obtained from the subtracting section is integrated in a difference integrating section for each interval and is then supplied to a discriminating section. Based on the signal from the difference integrating section, the discriminating section discriminates the authenticity, denomination and top or bottom surface of the bill.

REFERENCES:
patent: 3202761 (1965-08-01), Bibbero
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patent: 3953793 (1976-04-01), Nilsson
patent: 4041456 (1977-08-01), Ott
patent: 4072928 (1978-02-01), Wilder
patent: 4125858 (1978-11-01), Hounsfield et al.
patent: 4148010 (1979-04-01), Shiau
patent: 4179685 (1979-12-01), O'Maley
patent: 4348656 (1982-09-01), Gorgone et al.

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