发明授权
- 专利标题: Microlocal calibration of digital printers
- 专利标题(中): 数字打印机的微本地校准
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申请号: US85094申请日: 1998-05-26
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公开(公告)号: US5943477A公开(公告)日: 1999-08-24
- 发明人: Ravishankar Rao , Gerhard Robert Thompson , Charles P. Tresser , Chai Wah Wu
- 申请人: Ravishankar Rao , Gerhard Robert Thompson , Charles P. Tresser , Chai Wah Wu
- 申请人地址: NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: NY Armonk
- 主分类号: H04N1/405
- IPC分类号: H04N1/405 ; H04N1/407 ; G06F15/00 ; H04N1/46
摘要:
A method and apparatus to calibrate a printer which do not depend on geometric assumptions on the printed dots. The method takes account of the fundamentally probabilistic nature of the process of printing any dot on some types of printers such as laser printers. It allows estimating the probability distribution of what gets printed at each pixel depending on the local configuration of dots to be printed in such a way that only a limited number of tests need to be done, while no artificial cutoff is introduced on the size of local configurations to be taken into account. The calibration method can be applied to many problems encountered in digital printing, and permits computing printer dependent calibration of a dithering method without need for further direct measurements.
公开/授权文献
- USD426137S Automobile accessory 公开/授权日:2000-06-06