Method and apparatus for a pattern recognition

Details Method and apparatus for a pattern recognition Method and apparatus for a pattern recognition

1989-01-09

1990-12-11

Razavi, Michael

Image analysis

Histogram processing

For setting a threshold

382 50, 382 36, 382 25, 382 18, 358462, G06K 968

Patent

active

049776037

ABSTRACT:
A method and an apparatus for pattern recognition utilizing the multiple similarity method, capable of taking structural features of a pattern to be recognized into account, so that sufficiently accurate pattern recognition can be achieved even when the pattern may involve complicated and diverse variations. The method includes the steps of: counting a number of occurences within each one of localized regions which subdivides a pattern to be recognized, of local patterns indicating possible arrangements of picture elements; deriving a vector quantity indicating distribution of black picture elements which constitute the pattern, from the numbers of occurrences of the local patterns; calculating multiple similarity defined in terms of square of inner product of the vector quantity and one of prescribed standard vectors representing standard patterns; and recognizing the pattern by identifying the pattern with one of the standard pattern whose corresponding standard vectors gives the maximum values for the multiple similarity.

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patent: 4837846 (1989-06-01), Oyabu et al.

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