Method and device for the recognition of characters, preferably

Communications: electrical – Digital comparator systems

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Details

3401463MA, 3401463S, G06K 912

Patent

active

039991610

ABSTRACT:
The invention relates to a method for the automatic recognition of characters, preferably of figures, which may be hand-written on an information carrier provided with an arrangement of demarcated rectangles- one for each character. These handwritten characters are projected on to a matrix, where a camera tube ensures the scanning of the matrix, and the information thus read is recorded in a store and subsequently handled by a processor.
A device for carrying out this method comprises a character pattern manipulator connected to the store in the processor, the output of which manipulator is connected to a number of properties of signals derived from scanning the characters. This manipulator comprises means for copying or transferring the information stored in the processor to other storing matrices, rotating the information stored therein in successive 90.degree. turns, shifting and dividing the stored information, and erasing undesired information parts from the rectangles. The detecting circuitry comprises the detection of discontinuities or "jumps" in lines stored in the matrices, the slopes of the lines, the terminal points of the lines, and the numbers of each in each partial character; and the detection of "islands" or substantially surrounded areas in the matrices of secondary images of the character, including their number and the borders of said "islands".

REFERENCES:
patent: 3136976 (1964-06-01), Dietrich
patent: 3233219 (1966-02-01), Atrubin et al.
patent: 3341814 (1967-09-01), Chow
patent: 3381274 (1968-04-01), Quade et al.
patent: 3585592 (1971-06-01), Kiji et al.
patent: 3643215 (1972-02-01), Ingham et al.
patent: 3786416 (1974-01-01), Bhimani
patent: 3873972 (1975-03-01), Levine

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