Efficient determination of an illuminant of a scene
US8564687B2 · kind B2 · utility
2Cited by
41References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 7, 2007 |
| Grant date | Oct 22, 2013 |
| Priority date | — |
| Expiry date | Dec 11, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/6086
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An aspect of the present invention reduces computational complexity in determining a illuminant of a scene of interest by selecting only a subset of illuminants from several more potential illuminants, and searching for a current illuminant for a present image frame in only the subset of illuminants. Computational complexity may be reduced due to the searching in fewer illuminants. The subset of illuminants are selected according to various aspects to enhance the probability that the closest matching potential illuminant is accurately determined. The features can be used in image capture devices (ICDs) such as video cameras.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.