White balance adjustment apparatus and method for a digital image device
US7333138B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 14, 2004 |
| Grant date | Feb 19, 2008 |
| Priority date | — |
| Expiry date | Aug 3, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/88
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for a digital image device having an image-capturing device for photoelectrically changing an optical image focused through a lens unit, and for converting a signal output from the image-capturing device into a digital signal and processing input color data which is output in a predetermined period are disclosed. The apparatus and method comprise changing a range of established luminance levels every predetermined period, and luminance-dividing and storing color data, from the input color data, which belongs to the range of the established luminance level; detecting a white color out of the luminance-divided and stored color data, and setting to a range of clip luminance levels a range of luminance levels to which the detected white color belongs. The apparatus and method also comprise dividing an image captured on the image-capturing device into the predetermined number of windows, and view-dividing and storing color data in the window which belongs to the range of clip luminance levels with changing the windows every predetermined period. The apparatus and method further comprise calculating a final white color value based on the view-divided and stored co…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.