Color temperature conversion method, medium, and apparatus converting a color temperature of a pixel based on brightness
US9013771B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2005 |
| Grant date | Apr 21, 2015 |
| Priority date | — |
| Expiry date | Sep 11, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0666
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A color conversion method, medium, and apparatus, converting a color temperature of an image to a user-set color temperature, on a pixel-by-pixel basis, based on the brightness of each pixel of the image. The color temperature conversion method may include determining a first information associated with a conversion range, determining whether the color temperature of the input pixel needs to be converted by determining, based on the first information, whether the input pixel is within the conversion range, calculating color coordinates of a target point if the input pixel is within the conversion range, and converting the color temperature of the input pixel by moving, in the same direction as the reference point to the target point an amount proportional to the reference point displacement so that the input pixel can be automatically moved along with the reference point of the conversion range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.