发明名称 |
OVERHEAD IMAGE-READING APPARATUS, IMAGE PROCESSING METHOD, AND COMPUTER PROGRAM PRODUCT |
摘要 |
An overhead image-reading apparatus includes an imaging unit integrally formed with a light source, and a light amount adjusting unit that adjusts a light amount so as to keep luminance of a surface of a medium to be read constant based on a correction value of the light amount corresponding to an object-image distance.
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申请公布号 |
US2012320434(A1) |
申请公布日期 |
2012.12.20 |
申请号 |
US201213445436 |
申请日期 |
2012.04.12 |
申请人 |
TAKEDA YOSHIFUMI;PFU LIMITED |
发明人 |
TAKEDA YOSHIFUMI |
分类号 |
H04N1/04 |
主分类号 |
H04N1/04 |
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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