Method and apparatus for evaluating color in an image
US8532371B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2010 |
| Grant date | Sep 10, 2013 |
| Priority date | — |
| Expiry date | Aug 11, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/6088
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for evaluating a color of a sample includes acquiring an image having a plurality of pixels from a sample and a plurality of pixels from known color calibration patches. The image is color calibrated using the known color patches to endow the pixels from the sample with the tristimulus values they would have under one or more known illuminants. The calibrated image is transmitted, together with metadata, to a remote location where further computations and an approval process are performed. The further computations include comparing all of the pixels in the image of a standard that are of a first color to all pixels of a second color in the similarly calibrated image of the sample, where the second color is a color in the image of the sample that is most similar to the first color from the image of the standard.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.