Spectral normalization using illuminant exposure estimation
US7421121B2 · kind B2 · utility
4Cited by
8References
19Claims
0Family size
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Key dates
| Filing date | Feb 8, 2005 |
| Grant date | Sep 2, 2008 |
| Priority date | — |
| Expiry date | Sep 28, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/88
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
After image capture, scene parameters are analyzed, e.g. lux, flicker, or world estimation. A best guess illuminant for the scene parameters is determined. At this point, the white balancing coefficients corresponding to that illuminant may be applied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.