发明申请
US20130010336A1 VERSATILE MOIRE-FREE HALFTONE GEOMETRY THAT USES FREQUENCY VECTOR SHEARING
有权
使用频率矢量剪切的VERSATILE无无线HALFTONE几何
- 专利标题: VERSATILE MOIRE-FREE HALFTONE GEOMETRY THAT USES FREQUENCY VECTOR SHEARING
- 专利标题(中): 使用频率矢量剪切的VERSATILE无无线HALFTONE几何
-
申请号: US13178962申请日: 2011-07-08
-
公开(公告)号: US20130010336A1公开(公告)日: 2013-01-10
- 发明人: Shen-Ge Wang , Zhigang Fan , Robert Paul Loce
- 申请人: Shen-Ge Wang , Zhigang Fan , Robert Paul 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
- 主分类号: H04N1/405
- IPC分类号: H04N1/405
摘要:
As set forth herein, computer-implemented methods and systems facilitate the generation of halftone screens for moiré-free color halftoning. A first fundamental frequency vector and a second fundamental frequency vector of a halftone cell are sheared using a selected shearing value. The shearing value is selected as an offset in a fast scanning or slow scanning direction. The selected shearing value satisfies various moiré-free conditions associated with the identified frequency vectors and is capable of being selected for multiple halftone screens. The halftone screens generated using the sheared frequency vectors are used for moiré-free halftoning.
公开/授权文献
信息查询