发明申请
- 专利标题: BLACK CALIBRATION SYSTEM AND METHODS FOR DOCUMENT SCANNERS
- 专利标题(中): 黑色校准系统和文档扫描仪的方法
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申请号: US12188531申请日: 2008-08-08
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公开(公告)号: US20100033776A1公开(公告)日: 2010-02-11
- 发明人: R. Victor KLASSEN , Martin Edward BANTON
- 申请人: R. Victor KLASSEN , Martin Edward BANTON
- 申请人地址: US CT Norwalk
- 专利权人: XEROX CORPORATION
- 当前专利权人: XEROX CORPORATION
- 当前专利权人地址: US CT Norwalk
- 主分类号: H04N1/46
- IPC分类号: H04N1/46
摘要:
A method and systems for calibrating a document scanner are provided. The scanner calibration method includes providing a geometrically operative black absorption device having a structural geometry that is capable of receiving light and limiting propagation of the received light, where the black calibration target has a total light reflectance of less than one percent. The method further includes powering on a light source of a document scanner to provide light toward the black absorption device, where the light source generates a noise signal when providing the light. The method further includes detecting, by a sensor of the document scanner, light reflected from the black absorption device and generating calibration signals based on the reflected light and the noise signal.
公开/授权文献
- US08416477B2 Black calibration system and methods for document scanners 公开/授权日:2013-04-09
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