Method of separating specific patterns from pattern space and ap

Details Method of separating specific patterns from pattern space and ap Method of separating specific patterns from pattern space and ap

1992-09-21

1993-11-02

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

395 21, G06K 900

Patent

active

052590399

ABSTRACT:
There is provided a pattern separation apparatus capable of separating patterns of a specific group from a plurality of patterns constituting a plurality of groups present in an n-dimensional pattern space in accordance with simple computational processing, the apparatus being used in a variety of applications such as recognition of characters, figures, and the like. An average of a set of patterns is calculated to be X.sub.av, and a vector closest to X.sub.av is defined as a key point and represented by X.sub.key, X.sub.key s chosen as the most central point. An n-dimensional space having X.sub.key as its center is assumed to calculate a main plane in which the number of patterns is larger than that of .largecircle. patterns. When other .largecircle. patterns are included in the main plane, a subplane is calculated to eliminate these patterns from the main plane. When other patterns are included in planes other than the main plane, a subplane for separating these patterns from the .largecircle. patterns and enclosing the patterns is calculated. The specific patterns are separated by the main plane and the subplanes.

REFERENCES:
patent: 5003490 (1991-03-01), Castelaz et al.
patent: 5048100 (1991-09-01), Kuperstein
patent: 5056147 (1991-10-01), Turner et al.

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