发明授权
- 专利标题: Color mapping to preserve detail
- 专利标题(中): 颜色映射以保存细节
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申请号: US168444申请日: 1993-12-17
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公开(公告)号: US5588093A公开(公告)日: 1996-12-24
- 发明人: Steven J. Harrington
- 申请人: Steven J. Harrington
- 申请人地址: CT Stamford
- 专利权人: Xerox Corporation
- 当前专利权人: Xerox Corporation
- 当前专利权人地址: CT Stamford
- 主分类号: H04N1/60
- IPC分类号: H04N1/60 ; G06K15/02 ; G06T5/00 ; H04N1/46 ; G06K15/00
摘要:
A method and apparatus is disclosed for mapping original colors of image elements forming a color image to colors that appear solid when reproduced on a color printer. The original color and the solid color of each image element may be defined by a subtractive mixture of cyan, magenta and yellow colorants. The method first determines whether the original color of each image element is a light color surrounded by a dark background color, or a dark color surrounded by a light background color. Subsequently, the cyan and magenta colorants of each original color determined to be a light color surrounded by a dark background color are minimized; and one of the cyan or magenta colorants for each color determined to be dark and surrounded by a light background color is maximized. Consequently, image elements having colors defined by the mapping appear solid when reproduced by the color printer.
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