System and method of color image transformation
US7605959B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2005 |
| Grant date | Oct 20, 2009 |
| Priority date | — |
| Expiry date | Nov 21, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/60
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method comprises receiving a set of color transfer curves, receiving a digital image file having a plurality of pixel stacks, for each pixel stack in the digital image file: identify initial percent dot values for the pixel stack, determining a degree of affiliation of the pixel stack to each of seven color families including neutral, cyan, magenta, yellow, red, green, and blue, determining a curve adjustment value for each color transfer curve for each initial percent dot value, applying the curve adjustment values of the color transfer curves to the initial percent dot value and generating a color-correct percent dot value, and replacing the initial percent dot value with the color-corrected percent dot value. The above steps are repeated until all pixel stacks in the digital image file are processed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.