Subdividing color space for fast vector error diffusion
US9041980B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2013 |
| Grant date | May 26, 2015 |
| Priority date | — |
| Expiry date | Jan 29, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/405
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Subdividing a color space is described for vector error diffusion which includes obtaining color coordinates for each primary color in the color space, and comparing the color coordinates to a threshold value for each coordinate plane of the color space. In response to the comparing, each primary color is grouped into a quadrant of the color space, wherein each quadrant is defined by the threshold value for each coordinate plane. In other aspects, a mapping a color to a closet primary color is described in a color space that includes a display determining color coordinates of the color and identifying a matching quadrant of a plurality of quadrants dividing the color space, wherein the determined color coordinates fall within the matching quadrant. A representative display device searches for the closest primary color within the matching quadrant and maps the color to the closest primary color found.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.