Flicker correction apparatus, flicker correction method and image sensing apparatus
US8471923B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 6, 2011 |
| Grant date | Jun 25, 2013 |
| Priority date | — |
| Expiry date | Dec 6, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/745
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A flicker detection region in which an image signal has values relating to luminance and colors within predetermined ranges is extracted from a plurality of flicker detection regions allocated in the vertical and horizontal directions of an image. A flicker component is detected using the luminance information of the image signal in the extracted flicker detection region. A correction value to correct the flicker component is generated from the detected flicker component. This makes it possible to accurately correct, using a simple arrangement, a flicker component contained in an image sensed under a light source whose brightness periodically changes even when the object or the image sensing apparatus moves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.