Character recognition apparatus which obtains distance ratios be

Details Character recognition apparatus which obtains distance ratios be Character recognition apparatus which obtains distance ratios be

1991-06-14

1992-09-29

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

382 22, 382 64, G06K 946

Patent

active

051519526

ABSTRACT:
An apparatus for recognizing characters 20 on a document 10 comprises a scanning head 24 and decoding circuits 78, 72, 86, 92, 80, feeding a controller 84. The controller 84 detects the identity of the characters 20A-20N by calculating the ratio found by dividing the time between a first positive pulse 32 and a second positive pulse 34 by the time between the first positive pulse 32 and a last negative pulse 36 and comparing it against a stored table of ratios.

REFERENCES:
patent: 3316536 (1967-04-01), Andrews et al.
patent: 3391387 (1968-07-01), Flores
patent: 3585592 (1971-06-01), Kiji et al.
patent: 4143356 (1979-03-01), Nally

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