发明名称 CHARACTER RECOGNITION APPARATUS
摘要 Character recognition apparatus wherein projection pattern signals obtained by projecting the density distribution of a printed or typed character on two axes orthogonal to each other are transformed into frequency spectrum patterns by a Fourier transform unit, the transformed signals are compared with a number of standard frequency spectrum pattern signals which correspond to a number of standard characters and which are obtained by a method similar to the foregoing one, and the standard character corresponding to the frequency spectrum pattern of the highest degree of similarity is outputted as a recognized character.
申请公布号 US3846752(A) 申请公布日期 1974.11.05
申请号 US19720294179 申请日期 1972.10.02
申请人 HITACHI LTD,JA 发明人 NAKANO Y,JA;NAKATA K,JA;UCHIKURA Y,JA
分类号 G06K9/46;(IPC1-7):G06K9/02 主分类号 G06K9/46
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