Multi-scale recognizer for hand drawn strokes

Details Multi-scale recognizer for hand drawn strokes Multi-scale recognizer for hand drawn strokes

1989-10-13

1991-08-06

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

382 56, G06K 962

Patent

active

050383825

ABSTRACT:
A known hand drawn stroke is serially sampled at different scales by n angle filters to provide n filtered known strokes at n different scales. An unknown hand drawn stroke is sampled in a like manner to provide n filtered unknown strokes at n different scales. Filtered unknown strokes are compared with filtered known strokes. If there is a comparison within predetermined limits at any scale, the unknown hand drawn stroke is recognized as being the same as the known hand drawn stroke.

REFERENCES:
patent: 4608658 (1986-08-01), Ward
patent: 4628532 (1986-12-01), Stone et al.
patent: 4718103 (1988-01-01), Shojima et al.

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