Auto exposure for digital imagers
US7612813B2 · kind B2 · utility
9Cited by
10References
29Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 3, 2006 |
| Grant date | Nov 3, 2009 |
| Priority date | — |
| Expiry date | Oct 12, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/70
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for performing automatic exposure control based on current measured luminance of an image and dynamic/modifiable target luminance levels. Exposure adjustments and/or adjustments to the dynamic/modifiable target luminance windows are based on the measured luminance and threshold settings to improve image quality while avoiding oscillations and other problems typically associated with automatic exposure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.