Certifiable optical character recognition

Details Certifiable optical character recognition Certifiable optical character recognition

1995-11-17

1997-12-30

Mancuso, Joseph

Image analysis

Editing, error checking, or correction

Correcting alphanumeric recognition errors

382311, G06K 903

Patent

active

057039720

ABSTRACT:
A certificate, calculated on the text of a document to be reproduced, is included in the document in a form which is machine-readable. Upon optical character recognition scanning, or other digitizing reproduction, the certificate is also scanned and stored for comparison. A new certificate is calculated on the contents of the reproduced document and compared to the scanned certificate. If the two certificates are different, it is known that at least one error exists in the reproduced document. More than one certificate can be provided for a document in order to facilitate error location on the document and error correction therein.

REFERENCES:
patent: Re29104 (1977-01-01), Shepard
patent: 3763467 (1973-10-01), Cash et al.
patent: 4503556 (1985-03-01), Schal et al.
patent: 4589144 (1986-05-01), Namba
patent: 4741046 (1988-04-01), Matsunawa et al.
patent: 4750209 (1988-06-01), Shimura et al.
patent: 4893188 (1990-01-01), Murakami et al.
patent: 5001767 (1991-03-01), Yoneda et al.

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