Method of generating color separation data and image processing apparatus
US8270048B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 9, 2004 |
| Grant date | Sep 18, 2012 |
| Priority date | — |
| Expiry date | Nov 1, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/54
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention extends an entire reproducible gamut by generating color separation data effectively utilizing the particularly high saturation and lightness of a particular color ink. Color separation data uses three types of inks including a particular color ink red and basic color inks yellow and magenta at the maximum saturation point of a hue R. On a low-lightness side with respect to the maximum saturation point, a reproducible color space can be extended by adding a cyan ink or the like to the above inks. In a high-lightness are, the reproducible color space can be extended by using the particular color ink red. Further, the entire gamut of a low-lightness side of this hue can be extended.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.