发明授权
- 专利标题： Dither mask generation with calibration-independent number of threshold levels
- 专利标题（中）： 具有校准无关数阈值电平的抖动掩码生成
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申请号： US09270042申请日： 1999-03-16
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公开(公告)号： US06515770B1公开(公告)日： 2003-02-04
- 发明人: Ravishankar Rao , Gerhard R. Thompson , Charles P. Tresser , Chai W. Wu
- 申请人： Ravishankar Rao , Gerhard R. Thompson , Charles P. Tresser , Chai W. Wu
- 主分类号： G06K1500
- IPC分类号： G06K1500
摘要：
Calibrated dither masks adaptable to most printers are constructed in such a way that the threshold values can be adapted to a printer so that said printer can print the originally intended number of distinct tone levels. This adaptation can be done computationally so that the time it takes is not prohibitive. Furthermore, the resulting calibrated dither mask is such that there is no need for a tone reproduction curve in the halftoning process.
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