White balance method and white balance device
US8400523B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2011 |
| Grant date | Mar 19, 2013 |
| Priority date | — |
| Expiry date | Oct 7, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/88
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed are a white balance device and a white balance method. The device comprises a unit used to extract background pixels of an image; a unit used to obtain representative color of background; a unit for determining a global magnification ratio of the background pixels; a unit used to carry out pre-adjustment with regard to original color of each of the background pixels; a unit used to, for each of the background pixels, determine expected final background color of the corresponding background pixel, and then determine an accurate magnification ratio of the corresponding background pixel; and a unit used to, for each of the background pixels, carry out adjustment with regard to the original color of the corresponding background pixel by using the accurate magnification ratio of the corresponding background pixel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.