On-line pattern recognition system for hand-written characters

Details On-line pattern recognition system for hand-written characters On-line pattern recognition system for hand-written characters

1979-11-30

1981-08-18

Boudreau, Leo H.

Communications: electrical

Digital comparator systems

3401463SY, G06K 962

Patent

active

042849756

ABSTRACT:
A pattern recognition system operating on an on-line basis for hand-written characters, in particular for hand-written Chinese characters comprises a character input unit for providing the coordinates of a plurality of points on the strokes of a written input character, a classification unit for classifying the input characters to the first group having equal to or less than three strokes, and the second group having equal to or more than four strokes, an approximate unit for providing a plurality of feature points to each of strokes, the number of strokes being six for each stroke in the first group of characters and three for each stroke in the second group of characters, a pattern difference calculator for providing the sum of the length between the feature points of the input character and those of the reference characters which are stored in the reference pattern storage, and a minimum difference detector for determining the minimum length among the pattern differences thus calculated. The input character is recognized to be the same as the reference character which provides said minimum length.

REFERENCES:
patent: 3300757 (1967-01-01), Beltz
patent: 3605093 (1971-09-01), Parks et al.
patent: 3676847 (1972-07-01), Partin
patent: 4180799 (1979-12-01), Smith
Arakawa et al., "On-Line Rec. of Handwritten Char.", Review of El. Comm. Laboratories, vol. 26, Nos. 11-12, Nov.-Dec. 1978, pp. 1521-1536.
Groner et al., "On-Line Comp. Class of Handprinted Chinese Char.", IEEE Trans. on El. Computers, Dec. 1967, pp. 856-860.

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