Method and apparatus for improved color correction
US6844881B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2002 |
| Grant date | Jan 18, 2005 |
| Priority date | — |
| Expiry date | Jul 27, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0673
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods and apparatuses for performing gamma corrections to maintain a plurality of colors substantially consistent with a color point. In one aspect of the present invention, a method to generate correction functions for performing color correction for a device for signals of different color components in a color space includes: generating a first correction function for a first color component in the color space; and generating second correction functions for second color components in the color space by reducing first color differences between a target white point and white points of a plurality of grays corrected by the first and second correction functions. The second color components are the color components in the color space other than the first color component. The first color differences are minimized relative to a chromaticity diagram.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.