Image analysis – Histogram processing – For setting a threshold
Patent
1988-06-06
1991-05-07
Boudreau, Leo H.
Image analysis
Histogram processing
For setting a threshold
382 64, 235449, 235493, G06K 900, G06K 708, G06K 1906
Patent
active
050143247
ABSTRACT:
An apparatus for use in reading magnetic waveforms, like E13B, which are printed on a carrier like financial documents or checks. The waveforms include positive and negative peak values and substantially zero values occurring at predetermined times for a predetermined character. A shaft encoder is used to develop a nominal count which is correlated to the velocity of the carrier. Teh nominal count is used to generate a timing clock which is used to clock the positive and negative peak values and substantially zero values into registers for subsequent character recognition. The occurrence of the timing clock is adjusted by utilizing the occurrence of a positive or negative peak itself.
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Boudreau Leo H.
Commarata Michael
Hawk Jr. Wilbert
NCR Corporation
Sessler Jr. Albert L.
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