Optical recognizing apparatus

Details Optical recognizing apparatus Optical recognizing apparatus

1985-06-27

1986-12-30

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

382 48, G06K 934

Patent

active

046335021

ABSTRACT:
An optical recognizing apparatus is provided in which underlined characters are stored in a column pattern memory through a photodetector and a digitizer in the form of a dot pattern. The column pattern memory is scanned to detect the underline pattern, and the positional information of the detected pattern are stored in a memory provided within a microprocessor. The microprocessor computes the central position of the underline based on the position information, determines whether the respective dots are vertically above or below the central position of the underline white data or black data, and writes white data if the detected dot is black data. Such an operation is repeated for a predetermined number of dots of the underline. The above repetitive operation eliminates the underline. The character with underline removed is normalized in a normalizing circuit and is fed to a similarity computation circuit. The circuit determines its similarity with the use of a dictionary memory and recognizes the character.

REFERENCES:
patent: 4292622 (1981-09-01), Henrichon, Jr.
patent: 4377803 (1983-03-01), Lotspiech et al.

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