发明授权
US08305660B2 Methods and systems achieving print uniformity using reduced memory or computational requirements
有权
使用减少的记忆或计算要求实现打印均匀性的方法和系统
- 专利标题： Methods and systems achieving print uniformity using reduced memory or computational requirements
- 专利标题（中）： 使用减少的记忆或计算要求实现打印均匀性的方法和系统
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申请号： US10922316申请日： 2004-08-19
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公开(公告)号： US08305660B2公开(公告)日： 2012-11-06
- 发明人: Yeqing (Juliet) Zhang , Daniel E. Viassolo , Susan J. Zoltner , Howard A. Mizes , Robert P. Loce
- 申请人： Yeqing (Juliet) Zhang , Daniel E. Viassolo , Susan J. Zoltner , Howard A. Mizes , Robert P. Loce
- 申请人地址： US CT Norwalk
- 专利权人： Xerox Corporation
- 当前专利权人： Xerox Corporation
- 当前专利权人地址： US CT Norwalk
- 代理商 Kermit D. Lopez; Luis M. Ortiz; Tuesday A. Kaasch
- 主分类号： H04N1/46
- IPC分类号： H04N1/46 ; H04N1/42
摘要：
Engine response curves (RCs) can be used for streak compensation for printed documents. A feedback control paradigm can be included to effect RC compensation. Singular Value Decomposition (SVD) can be used to represent each RC in the collection of spatial RC data as a linear combination of basis vectors. RCs are approximated by selecting the first few basis vectors, the approximation aiding in noise rejection and reducing computation in the controller by reducing dimensionality of the RC data from gray levels to the number of SVD bases selected. An optimal subset of RCs is selectable from the set of approximated RCs by clustering the SVD weights, the clustered SVD weights producing TRCs that span all engine response RCs generated by a printer. Compensation RCs are constructible using reduced number of bases and clustered SVD weights.