Method of extracting feature from line pattern and line pattern

Details Method of extracting feature from line pattern and line pattern Method of extracting feature from line pattern and line pattern

1990-09-19

1993-04-20

Mancuso, Joseph

Image analysis

Histogram processing

For setting a threshold

382 23, 382 24, G06K 948

Patent

active

052049159

ABSTRACT:
A method of extracting a feature from a line pattern comprising the steps of (a) extracting a thinned line from the line pattern, (b) finding one or a plurality of singular points which are formed on the thinned line, (c) decomposing each of the singular points into a plurality of vertices, (d) generating strokes due to the finding of pairs of the vertices, obtained by the step (c), which are regarded as identical to each other, (e) converting each of the strokes into a primitive sequence obtained by a concatenation of primitives, and (f) generating a binary relation between each two primitive sequences obtained by the step (e), so that the line pattern is featured by a combination of primitive sequences obtained by the step (e) and the binary relation between each of the primitive sequences.

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