Apparatus and/or method for recognizing printed data in an image

Details Apparatus and/or method for recognizing printed data in an image Apparatus and/or method for recognizing printed data in an image

1990-11-21

1996-10-08

Razavi, Michael

Image analysis

Applications

Mail processing

235494, 235463, G06K 920

Patent

active

055639550

ABSTRACT:
A system for recognizing and locating in an image, printed data of a known spatial characteristic. A digital matched filter is used to identify the presence of the printed data via an auto correlation between the filter coefficients and the printed data. When an auto correlation is identified, approximate areas are selected and further processing is undertaken only within such areas.

REFERENCES:
patent: 4704519 (1987-11-01), Kulikauskas
patent: 4822986 (1989-04-01), Guthmueller et al.
patent: 4845761 (1989-07-01), Cate et al.
patent: 4853969 (1989-08-01), Weideman
patent: 4874933 (1989-10-01), Sanner
patent: 4989100 (1991-01-01), Ishima

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