发明名称 |
Halftoning pixel processing method by dithering |
摘要 |
<p>To convert the multiple-bit-resolution intensity information for a colour component of a given pixel into the ink-on or ink-off command required to control a printer, the source values for different pixels are compared with thresholds in a "dither matrix" of different thresholds for different pixels, and a given pixel is printed if the source value exceeds the dither-matrix value for that pixel. Different dither matrices are employed for different colour components, with the result that lighter-colour areas have a smoother appearance than would result if a common dither matrix were employed for all colour components. <IMAGE></p> |
申请公布号 |
EP0791895(A2) |
申请公布日期 |
1997.08.27 |
申请号 |
EP19970301186 |
申请日期 |
1997.02.24 |
申请人 |
SEIKO EPSON CORPORATION |
发明人 |
SHU, JOSEPH;LI, CHIA-HSIN |
分类号 |
G09G5/36;H04N1/405;H04N1/52;B41J2/52;G06T5/00;G09G5/02;(IPC1-7):G06T11/00 |
主分类号 |
G09G5/36 |
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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