发明授权
- 专利标题: System and method of halftoning for multi-pass rendering
- 专利标题(中): 用于多遍渲染的半色调系统和方法
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申请号: US10044468申请日: 2002-01-11
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公开(公告)号: US07719722B2公开(公告)日: 2010-05-18
- 发明人: Gaurav Sharma , Shen-ge Wang , Zhigang Fan
- 申请人: Gaurav Sharma , Shen-ge Wang , Zhigang Fan
- 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
- 代理机构: Fay Sharpe LLP
- 主分类号: G06K15/00
- IPC分类号: G06K15/00 ; H04N1/405 ; B41J2/205
摘要:
A system and method for halftoning for multi-pass rendering of an image in which different pixel locations are rendered in each pass which reduces the effects of inter-pass mis-registration errors. The method of halftoning includes restricting a substantial majority of the pixels turned on to render a tone to the minimum number of passes required to produce the tone. The halftoning method can include generating a stochastic halftone turn-on sequence and re-ordering the turn-on sequence. The halftoning method can also use error diffusion, adding a zero mean bias signal to either the image input pixels or the threshold values. The halftoning method is applicable to color or black and white rendering.
公开/授权文献
- US20030133160A1 System and method of halftoning for multi-pass rendering 公开/授权日:2003-07-17