发明名称 |
Halftone independent correction of spatial non-uniformities |
摘要 |
The predicted tone response curve for each color channel and halftone is predicted using a binary printer model and stored, wherein the “predicted tone response curve” provides a model based approximation of the actual response for the printer for each addressable pixel location in the spatial range. Also stored is an “average predicted tone response” by averaging the “predicted tone response curve” over the spatial range of the printer. With the “true average” tone response curve, the “predicted tone response curve”, and the “average predicted tone response curve”, an estimate of the true tone response curve for the color channel can then be mathematically obtained, wherein the true tone response curve defines a predicted actual response for the printer for each addressable print location in the spatial range. The “predicted” and “average” tone response curves are obtained using the 2×2 binary printer model. |
申请公布号 |
US8072648(B2) |
申请公布日期 |
2011.12.06 |
申请号 |
US20070881263 |
申请日期 |
2007.07.26 |
申请人 |
MONGA VISHAL;WANG SHEN-GE;BALA RAJA;XEROX CORPORATION |
发明人 |
MONGA VISHAL;WANG SHEN-GE;BALA RAJA |
分类号 |
H04N1/401;G03F3/10;H04N1/405;H04N1/407;H04N1/50;H04N1/52;H04N1/60 |
主分类号 |
H04N1/401 |
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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