发明名称 |
Method and system for mapping color to texture in a copier |
摘要 |
Color documents are reproduced in black-and-white in a manner that preserves color information through halftoning. Each image element on a color document is assigned a tag on the basis of its hue angle. The tag associates with that image element a particular halftone cell. The halftone cell has a distinct pattern associated with a pre-selected range of hue angles. The halftone cell is then applied to the luminance component of the image element. The result is a black-and-white image in which different hues appear as different halftone cells having distinct patterns and variations in the luminance are represented by the density of the resulting halftone.
|
申请公布号 |
US6760123(B1) |
申请公布日期 |
2004.07.06 |
申请号 |
US19990450860 |
申请日期 |
1999.11.29 |
申请人 |
XEROX CORPORATION |
发明人 |
HARRINGTON STEVEN J.;TABER JEAN;HEMBROCK GWENDOLYN |
分类号 |
G06F15/00;H04N1/40;H04N1/409;H04N1/56;(IPC1-7):G06F15/00 |
主分类号 |
G06F15/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|