Image analysis – Color image processing – Pattern recognition or classification using color
Patent
1993-01-29
1998-11-10
Boudreau, Leo
Image analysis
Color image processing
Pattern recognition or classification using color
382191, 382227, 382228, G06K 962
Patent
active
058356258
ABSTRACT:
A method and apparatus for optical identification an unknown character from a plurality of known characters. Each of the known characters includes a predominant color and a nonpredominant color in preselected proportions. The unknown character has at least one geometric feature and a plurality of pixels including a predominant color and a nonpredominant color. The method and apparatus of the present invention include an examination of at least one geometric feature of the unknown character. A hypothetical identity for the unknown character is generated in response to the examination of at least one geometric feature of the unknown character. A portion of the plurality of pixels of the unknown character is sampled and a proportion between the predominant color and the nonpredominant color within the sampled portion of the plurality of pixels is determined from the sampled pixels. A comparison of the determined proportion with a preselected proportion associated with a known character corresponding to the hypothetical identity is made. The hypothetical identity is assigned to the unknown character if the determined proportion falls within the preselected range of the preselected proportion for the known character corresponding to the hypothetical identity.
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Fitzpatrick Gregory P.
Williams Marvin L.
Anderson, Jr. D. Richard
Boudreau Leo
Dillon Andrew J.
Duffield Edward
International Business Machines - Corporation
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