发明名称 |
Method of high addressability error diffusion |
摘要 |
A method and system implements a high addressability characteristic into an error diffusion process. A grey level value representing a pixel is received: The grey level value has a first resolution which corresponds to an original input resolution. The grey level value is interpolated to generate subpixel grey level values which correspond to a second resolution. The second resolution is higher than the first resolution and corresponds to the high addressability characteristic. A threshold circuit thresholds the interpolated grey level value and generates an error value as a result of the threshold. The error value has a resolution corresponding to the first resolution. A portion of the error value is diffused to adjacent pixels on a next scanline.
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申请公布号 |
US5608821(A) |
申请公布日期 |
1997.03.04 |
申请号 |
US19940285326 |
申请日期 |
1994.08.03 |
申请人 |
XEROX CORPORATION |
发明人 |
METCALFE, DAVID J.;SHIAU, JENG-NAN;WILLIAMS, LEON C. |
分类号 |
H04N1/403;H04N1/405;(IPC1-7):G06K9/36 |
主分类号 |
H04N1/403 |
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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