Backlight compensation using threshold detection
US7398016B2 · kind B2 · utility
3Cited by
11References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 4, 2005 |
| Grant date | Jul 8, 2008 |
| Priority date | — |
| Expiry date | Oct 18, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/71
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and circuit for excluding regions from an exposure calculation is described. The method includes obtaining pre-image data representing an image of a scene and dividing the image into a plurality of regions. Regions that contain a predetermined number of bright pixels are identified, bright pixels being pixels that are brighter than a threshold level of brightness. Each region that has at least the predetermined number of bright pixels from the exposure calculation are excluded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.