Fast, adaptive color to grayscale conversion
US7706606B1 · kind B1 · utility
30Cited by
1References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 2006 |
| Grant date | Apr 27, 2010 |
| Priority date | — |
| Expiry date | Feb 3, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/40012
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods and systems, including computer program products, for determining a plurality of color clusters based on a plurality of pixels associated with a color image, the clusters being fewer than the pixels. A grayscale value for each one of a plurality of points in a color space is determined. Each grayscale value is based on a weighted average of target differences between each point and the clusters. Each of the pixels is associated with one or more of the points. A grayscale value for each pixel is identified based on the grayscale value of the associated one or more points.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.