Communications: electrical – Digital comparator systems
Patent
1978-05-02
1979-07-31
Boudreau, Leo H.
Communications: electrical
Digital comparator systems
3401463Y, G06K 912
Patent
active
041632141
ABSTRACT:
A character in a pattern area is optically scanned and the scanned black and white signal cells of the character are stored in a digital memory. The character in the digital memory is recognized through an initial feature extraction process, unification process, concentration process, and recognition process. In the initial feature extraction process each cell thus scanned is encoded according to the presence of a character line or a black cell in a predetermined direction from each cell. The unification process unifies the code of each cell according to a predetermined algorithm, and the concentration process provides a concentrated code for each cell. The recognition process counts each of the concentrated codes and determines the class to which the character to be recognized belongs when the number of particular concentrated codes reaches a predetermined threshold which is defined for each class. The stepping up in the counting of the concentrated code in the recognition process is performed with some conditions, in which, for instance, only when a predetermined concentrated code appears a predetermined number of times, the particular concentrated code is initiated for counting.
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Ishii Kenichiro
Kaneko Hiroshi
Kawatani Takahiko
Komori Kazuaki
Boudreau Leo H.
Nippon Telegraph and Telephone Public Corporation
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