发明名称 Color image processing apparatus
摘要 A color image processing apparatus for digitally reading a color document and effecting digital printing comprises a character region extracting device for extracting a character region of the color document; a black portion extracting device for extracting a black portion of the color document; and a single black color processing device for processing a single black color only with respect to a region which falls within the character region and the black portion in the color document, so as to allow character portions to be distinguished favorably.
申请公布号 US6415052(B1) 申请公布日期 2002.07.02
申请号 US19950394212 申请日期 1995.02.24
申请人 CANON KABUSHIKI KAISHA 发明人 OHSAWA HIDEFUMI
分类号 H04N1/46;H04N1/58;(IPC1-7):G06K9/46 主分类号 H04N1/46
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