Method for compensating an image
US7978201B2 · kind B2 · utility
5Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2006 |
| Grant date | Jul 12, 2011 |
| Priority date | — |
| Expiry date | May 8, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/42202
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for compensating an image produced by image means for implementing image information takes account of ambient illumination. Luminance of external background illumination around the image means is measured. The measured luminance of the background illumination is compared with preset tristimulus values and a reflectance factor of the image means, a comparison result is computed, and a control signal is generated to compensate luminance and chroma of an image. Luminance and chroma of the image means are compensated in response to the control signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.