White balance method for display image
US8723880B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 9, 2011 |
| Grant date | May 13, 2014 |
| Priority date | — |
| Expiry date | Jun 15, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0693
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A white balance method for a display image is disclosed. The steps of the method includes: measuring gray levels of a basic and reference colors based on a plurality of color temperatures; obtaining reference color gains according to average values of the gray level of the reference and basic colors and a ratio according to the reference color gains corresponding to each of the color temperatures; dividing the display image into a plurality of blocks, and obtaining a reference color gain of each of blocks according to the average values of the gray levels of reference and basic colors, and obtaining a block ratio of each of blocks; generating a selected number corresponding to each of the color temperature according to the ratios and the block ratios; selecting the basic and reference color gains of one of the color temperatures for executing white balance to the display image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.