Method of effectively reading data written on data sheet, and da

Details Method of effectively reading data written on data sheet, and da Method of effectively reading data written on data sheet, and da

1990-12-17

1991-08-06

Moore, David K.

Image analysis

Histogram processing

For setting a threshold

235436, 382 46, 382 65, G06K 920

Patent

active

050383930

ABSTRACT:
In a character reading apparatus, a slip image having three reference marks printed at three of the four predetermined corners of the slip is stored in an image buffer. The image in the image buffer is scanned to detect the three reference marks. A feed orientation of the slip is determined on the basis of the layout of the three reference marks. Data can be read on the basis of the detected three reference marks and the determined feed orientation of the slip.

REFERENCES:
patent: 3744025 (1973-07-01), Bilyutay
patent: 4589144 (1986-05-01), Namba
patent: 4760247 (1988-07-01), Keane et al.
patent: 4811416 (1989-03-01), Nakamura
patent: 4823395 (1989-04-01), Chikauchi
Balm et al., "Byte Sequence Reversal", IBM Tech. Disc. Bulletin, vol. 14, No. 8, Jan. 1972, pp. 3456-2457.
"OCR-Facsimile Integrated System", Bulletin of Institute of Electronics and Communication Engineers of Japan, Issued in 1981 System Division National Meeting, p. 87.

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