发明名称 |
Image processor and image processing method |
摘要 |
A filtering processing unit of an image processor includes a component extraction unit, a character edge quantity calculation unit, and a correction unit corresponding to each of a plurality of frequency bands and direction components, and an adder. The component extraction unit extracts signals from a corresponding one of the frequency bands and direction components. The character edge quantity calculation unit calculates a character edge quantity from an output of a corresponding one of the component extraction units. The correction unit performs correction control to the output of a corresponding one of the component extraction units based on a character edge quantity calculated by a corresponding one of the character edge quantity calculation units. The adder adds outputs of all the correction units. |
申请公布号 |
EP1349113(A3) |
申请公布日期 |
2006.01.11 |
申请号 |
EP20030006175 |
申请日期 |
2003.03.19 |
申请人 |
RICOH COMPANY |
发明人 |
MORIMOTO, ETSUO;SHIBAKI, HIROYUKI;SUINO, TOORU |
分类号 |
G06T5/20;G06T5/00;G06T7/00;H04N1/40;H04N1/409 |
主分类号 |
G06T5/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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