Character recognition apparatus

Details Character recognition apparatus Character recognition apparatus

1991-06-14

1993-10-26

Goldstein, Herbert

Image analysis

Histogram processing

For setting a threshold

382 29, 382 64, G06K 900

Patent

active

052573192

ABSTRACT:
A character recognition apparatus uses a magnetic head to read magnetic printed coded characters from a passing cheque 10. A head 24 using a circuit including a delay line 58 drives a controller 76 which, should a character not instantly be recognized by matching against templates, first varies the presumed speed by plus or minus 10% to see if a match can be found, then suppresses each detected edge in the character, in turn, to determine whether or not a match can be found. Each edge is used to create subsequent timing windows wherein a subsequent edge may be detected. The use of timing windows suppresses erroneous edge detection.

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patent: 4245211 (1981-01-01), Kao
patent: 4356472 (1982-10-01), Hau-Chun et al.
patent: 4797938 (1989-01-01), Will

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