Pattern string matching apparatus and pattern string...

Image analysis – Pattern recognition – On-line recognition of handwritten characters

Reexamination Certificate

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C382S218000, C382S229000

Reexamination Certificate

active

06978044

ABSTRACT:
This invention is to compare each character of a first character string with each character of a second character string, vote for a matrix having two sides corresponding to the characters of the first character string and the characters of the second character string and calculate values of the voting result for respective components arranged in an oblique direction of the matrix. The matching result is determined based on the calculated values of the voting result. As a result, a high-speed and highly precise matching process which is noise-resistant and takes the character arrangement into consideration can be attained.

REFERENCES:
patent: 5757959 (1998-05-01), Lopresti
patent: 5802205 (1998-09-01), Emico et al.
patent: 5832474 (1998-11-01), Lopresti et al.
patent: 5850480 (1998-12-01), Scanlon
patent: 5963666 (1999-10-01), Fujisaki et al.
patent: 6047093 (2000-04-01), Lopresti et al.
patent: 6131102 (2000-10-01), Potter
patent: 6597809 (2003-07-01), Ross et al.
Elliman, D.G. et al., “A Review of Segmentation and Contextual Analysis Techniques for Text Recognition,” Pattern Recognition, Pergamon Press Ing., Elmsford, N.Y., US, vol. 23, no. 3/4, 1990, pp. 337-346; pp. 340-341, Sec. “3.2.1 String Matching”.
Bertossi, A.A. et al., “String Matching with Weighted Errors,” Theoretical Computer Science, Amsterdam, NL, vol. 73, no. 3, Jul. 22, 1990, pp. 319-328, figure 1.

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