Method and apparatus for separating overlapping patterns

Details Method and apparatus for separating overlapping patterns Method and apparatus for separating overlapping patterns

1985-12-19

1988-09-06

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

382 22, 382 54, G06K 936

Patent

active

047698497

ABSTRACT:
A method of determining the outline of a character in a character recognition system, the character being included in a segment comprising a plurality of pixels which are either white corresponding to the absence of information or black corresponding to the presence of information, the method including the steps of: searching the segment of pixels to detect the location of the first black pixel nearest one edge of the segment; storing the location in the segment of the first detected black pixel; scanning those pixels in the segment within a predetermined distance from the first detected black pixel to detect a second black pixel; storing the location in the segment of the second detected black pixel; and continuing the scanning to successively detect black pixels surrounding the last detected black pixel.

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patent: 4545070 (1985-10-01), Miyagawa et al.
patent: 4566125 (1986-01-01), Clunn
patent: 4575751 (1986-03-01), Duschl
patent: 4646355 (1987-02-01), Petrick et al.

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