发明名称 |
Active compensation of streaks using spatial filtering and feedback control |
摘要 |
An image processing method to reduce streaking on a printed sheet uses a negative feedback system to reduce streaking. The method scans a printed sheet to produce image data. The method further measures gray-levels of the image data and computes a compensation vector from the measured gray-levels as the difference between a nominal tonal-resproduction-curve and local tonal-reproduction-curves. The compensation vector is applied the image data to be printed. The compensation vector emphasizes ranges of frequencies sensitive of the human eye. |
申请公布号 |
US7424169(B2) |
申请公布日期 |
2008.09.09 |
申请号 |
US20030641553 |
申请日期 |
2003.08.15 |
申请人 |
XEROX CORPORATION |
发明人 |
VIASSOLO DANIEL E.;MIZES HOWARD A. |
分类号 |
G06K9/40;G06K15/00;G06T5/00;H04N1/407;H04N1/409;H04N1/46;H04N9/64 |
主分类号 |
G06K9/40 |
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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