Optical character reading apparatus which can reduce reading err

Details Optical character reading apparatus which can reduce reading err Optical character reading apparatus which can reduce reading err

1993-08-02

1995-02-21

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250556, 382 9, G06K 710

Patent

active

053918894

ABSTRACT:
In an optical character reading apparatus for optically reading a character image to produce a character signal representative of the character image, a collation and judgement circuit (22) compares a modified image with each of predetermined reference images memorized in a dictionary (21). A character detecting arrangement (11, 12) detects the character image to produce a detected image. A deleting arrangement (15, 16) partially deletes the detected image to produce a partially deleted image. A modifying arrangement (17, 18) modifies the partially deleted image into the modified image by the use of a reference signal produced in a reference signal producing arrangement (13, 14). It is preferable that the reference signal producing arrangement produces the reference signal in accordance with the detected image.

REFERENCES:
patent: 5253304 (1993-10-01), LeCun et al.
patent: 5271067 (1993-12-01), Abe et al.

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