Data reading apparatus for reading data from form sheet

Details Data reading apparatus for reading data from form sheet Data reading apparatus for reading data from form sheet

1987-12-16

1990-06-12

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

382 57, 382 65, G06K 900

Patent

active

049339796

ABSTRACT:
A data reading apparatus for reading data from a form sheet comprises a scanning device for optically scanning the form sheet and for outputting image data read from the form sheet, a storing part for storing form informations on different kinds of model form sheets having different fixed forms, a discriminating part for discriminating the kind of the form sheet which is scanned by the scanning device by comparing a form information on the form sheet included in the image data from the scanning device with the form informations stored in the storing part, and a reading part for reading from the image data outputted from the scanning device data in predetermined reading areas of the form sheet depending on the form information of a model form sheet which is discriminated in the discriminating part as being identical to the kind of form sheet scanned by the scanning device.

REFERENCES:
patent: 3820067 (1977-01-01), Shepard
patent: 4566127 (1986-01-01), Sekiya et al.
patent: 4677551 (1987-06-01), Suganuma
patent: 4686704 (1987-08-01), Kamada et al.
patent: 4691238 (1987-09-01), Yamada
patent: 4811416 (1989-03-01), Nakamura
Yasuaki Nakano, Hiromichi Fujisawa, Osamu Kunisaki, Kunihiro Okada and Toshihiro Hananoi, "Understanding of Tabular Form Documents Cooperating with Character Recognition", The Transactions of the Institute of Electronics and Communication Engineers of Japan, vol. J69-D No. 3, Mar., 1986, pp. 400-409.

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