Method and apparatus for adaptive and self-calibrated sensor green channel gain balancing
US8005297B2 · kind B2 · utility
4Cited by
11References
24Claims
0Family size
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Key dates
| Filing date | Sep 6, 2006 |
| Grant date | Aug 23, 2011 |
| Priority date | — |
| Expiry date | Oct 8, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/134
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for adaptive green channel odd-even mismatch removal to effectuate the disappearance of artifacts caused by the odd-even mismatch in a demosaic processed image. In one example, a calibrated GR channel gain for red rows and a calibrated GB channel gain for blue rows are determined and are a function of valid pixels only in each respective region. After the calibration, in a correction process, the green pixels in red rows of a region are multiplied by the calibrated GR channel gain, and the green pixels in blue rows are multiplied by the calibrated GB channel gain.
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