发明授权
US07518618B2 Anti-aliased tagging using look-up table edge pixel identification
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使用查找表边缘像素识别的抗锯齿标签
- 专利标题: Anti-aliased tagging using look-up table edge pixel identification
- 专利标题(中): 使用查找表边缘像素识别的抗锯齿标签
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申请号: US11317782申请日: 2005-12-23
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公开(公告)号: US07518618B2公开(公告)日: 2009-04-14
- 发明人: Robert P. Loce , Beilei Xu , Stuart A. Schweid , Son H. Nguyen , Michael Branciforte
- 申请人: Robert P. Loce , Beilei Xu , Stuart A. Schweid , Son H. Nguyen , Michael Branciforte
- 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: G09G5/00
- IPC分类号: G09G5/00
摘要:
The teachings provided herein disclose an image processing method for rendering a digital image possessing anti-aliased pixels by selecting a target pixel location within the digital image; observing a set of pixels within a pixel observation window superimposed on the digital image relative to the target pixel location; generating edge-state codes for a plurality of pairs of neighboring vectors of pixels within the pixel observation window; generating edge-identification codes from the plurality of edge-state codes using at least one look-up table; and, utilizing the edge-identification codes to select and apply to the digital image at the target pixel either anti-aliased rendering or conventional halftoning. The anti-aliasing may employ pixel signals that are high addressable and directionally biased to a particular orientation.
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