System for backlight detection using brightness values of subareas in focus area and method therefor
US7676149B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 2007 |
| Grant date | Mar 9, 2010 |
| Priority date | — |
| Expiry date | May 22, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/675
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system for backlight detection using the brightness values of the subareas in a focus area and method therefor are provided, which are applicable to an image capture device. The focus area is divided into a plurality of subareas and the brightness values of each of the subareas are calculated. Then, the brightness values of each of the subareas are converted into 0 and 1 codes, and then the codes are combined to generate the codes representing the entire focus area. The status values corresponding to each of the codes are determined with reference to a backlight detection table established in advance, so as to determine whether an object to be shot is in a backlight condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.