发明授权
- 专利标题: Image processing method and image processing apparatus
- 专利标题(中): 图像处理方法和图像处理装置
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申请号: US09345783申请日: 1999-07-01
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公开(公告)号: US06724507B1公开(公告)日: 2004-04-20
- 发明人: Hiroaki Ikegami , Hitoshi Ogatsu , Ryosuke Higashikata , Takahide Inoue
- 申请人: Hiroaki Ikegami , Hitoshi Ogatsu , Ryosuke Higashikata , Takahide Inoue
- 优先权: JP10-187308 19980702
- 主分类号: G03F308
- IPC分类号: G03F308
摘要:
Provided is an image processing method and a apparatus of converting a color input image or a partial region thereof in accordance with a color gamut of a color image output apparatus is provided. The method and apparatus is characterized in that only the region requiring color gamut compression can be put to color gamut compression depending on the distribution of an input image, that the direction of the color gamut compression can be controlled continuously for each of the regions; the amount of the color gamut compression can be controlled continuously including clipping, that when color gamut compression is conducted by a color converter of a multi-dimensional DLUT interpolating calculation type, an excessively unnecessary color gamut compression can be avoided particularly upon clipping, and that there is enabled correction for visual bending in iso-hue lines caused by distortion of a color space in each of the regions of the color space.