Image analysis – Applications – Reading paper currency
Patent
1997-11-20
2000-06-20
Au, Amelia
Image analysis
Applications
Reading paper currency
382156, 382205, 382289, 209534, G06K 900, G06K 962, G06K 956, B07C 500
Patent
active
060786833
ABSTRACT:
A denomination recognition apparatus and method uses a programmed microelectronic CPU (14) to execute program instructions (19) stored in PROM (18) to read in pixel data from an optical imaging section including LEDs (15) and photodiodes (16) for generating signals which can be converted to a first image of a currency note (13) being transported along the path of travel. The CPU (14) receives position and skew data detected by external sensors for sensing the position and skew of the note (13). The CPU (14) executes the program instructions, first to assemble a first data image of pixel data representing a two-dimensional image of substantially all of the note while averaging the pixel data in groups for further processing; second, to correct the first data image based on the skew data to eliminate skew; and third, to relate the first data image to a plurality of pre-defined data images according to a mathematical function to determine whether the first data image can be classified as matching any one of the pre-defined data images corresponding to a specific currency denomination.
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Burgert Robert J.
DeFeo Michael
Denison Jack
Mikkelsen John
Truong Peter
Au Amelia
Dastouri Mehrdad
De La Rue, Inc.
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