Image processing apparatus, image processing method, image processing program recording medium, color adjustment method, color adjustment device, and color adjustment control program recording medium
US6535301B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1998 |
| Grant date | Mar 18, 2003 |
| Priority date | — |
| Expiry date | Jun 16, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/628
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A color adjustment device performs color separation of color image data for each predetermined element color and enhances the color image data to provide each desired color in the output. A chromaticity judging unit determines a chromaticity value of each pixel according to the color image data. An object chromaticity pixel statistical calculation unit performs statistical calculations on pixels having chromaticity values determined by the chromaticity judging unit to meet a predetermined chromaticity range. A color adjustment degree judging unit determines a degree of color adjustment to eliminate a difference between a predetermined optimum value for pixels that meet the predetermined chromaticity range, and a result value attained in the statistical calculation. The color adjustment degree judging unit also regulates the degree of color adjustment according to an occupancy ratio, of pixels subjected to the statistical calculation to the total number of pixels. A color adjusting unit carries out the color adjustment of the image data according to the regulated degree of color adjustment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.