发明申请
US20080024805A1 Conversion of output device color values to minimize image quality artifacts
失效
转换输出设备颜色值以最小化图像质量伪像
- 专利标题: Conversion of output device color values to minimize image quality artifacts
- 专利标题(中): 转换输出设备颜色值以最小化图像质量伪像
-
申请号: US11902778申请日: 2007-09-25
-
公开(公告)号: US20080024805A1公开(公告)日: 2008-01-31
- 发明人: Kevin Andresen , Kok Chen
- 申请人: Kevin Andresen , Kok Chen
- 申请人地址: US CA Cupertino
- 专利权人: Apple Inc.
- 当前专利权人: Apple Inc.
- 当前专利权人地址: US CA Cupertino
- 主分类号: G06F15/00
- IPC分类号: G06F15/00 ; G03F3/08
摘要:
Undesirable artifacts appearing in color images, such as blooming or smudging around the edges of text, are avoided through selective reduction of the color gamut for objects which form the image. Individual component color values are modified by taking into account combinations of colors and their effect upon the artifacts to be eliminated. Only those parameter values which contribute to the artifact are modified. Other parameter values are left intact, to maintain the original image characteristics. When a color value is modified, all components of that color are modified in a symmetrical manner, to preserve the hue of the original color. The impact on the image is further minimized by selectively applying color correction only to those objects in which the artifact is pronounced.
公开/授权文献
信息查询