Apparatus and method of recognizing pattern through feature sele

Details Apparatus and method of recognizing pattern through feature sele Apparatus and method of recognizing pattern through feature sele

1997-02-14

1999-07-06

Rogers, Scott

Image analysis

Learning systems

Trainable classifiers or pattern recognizers

382190, 382197, 382198, 382218, G06K 962, G06K 964, G06K 966

Patent

active

059206446

ABSTRACT:
A feature extracting unit extracts an input feature vector from an input character pattern. A learning unit computes orthonormal bases of a partial eigenspace of an original feature space from learning feature vectors of a plurality of learning character patterns, and stores the computation results in an orthonormal base storage unit for the partial eigenspace. The learning unit computes each of the dictionary selection feature vectors prescribed in the partial eigenspace corresponding to each of the object character patterns, and stores the computation results in a recognition dictionary unit. A feature selection unit computes an input selection feature vector obtained by projecting an input selection feature vector extracted by the feature extracting unit on the partial eigenspace using the above described orthonormal bases. A collating unit estimates a type of the input character pattern by collating the above described input selection feature vector with each of the dictionary selection feature vectors.

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Patent Abstracts of Japan, No. 4-52989, Feb. 20, 1992.

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