发明名称 |
Document reading apparatus for detection of curvatures in documents |
摘要 |
A document reading apparatus comprising a document table, a reading section disposed above the document table for reading a document, e.g. an opened book, placed on the document table, and a linear light source for emitting light to the opened book at an angle thereto. The reading section includes a sensor for detecting an image of the light emitted to the book. This image displays a brightness distribution over surfaces of the opened book including curvatures adjacent the joint. The brightness distribution is used as a reference for rectifying an image signal corresponding to the opened book when the document image is reproduced.
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申请公布号 |
US5084611(A) |
申请公布日期 |
1992.01.28 |
申请号 |
US19900588652 |
申请日期 |
1990.09.26 |
申请人 |
MINOLTA CAMERA KABUSHIKI KAISHA |
发明人 |
OKISU, NORIYUKI;MATSUDA, SHINYA;KARASAKI, TOSHIHIKO |
分类号 |
H04N1/04;H04N1/10;H04N1/107;H04N1/195;H04N1/387 |
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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