White balance adjustment device and white balance adjustment method
US10979683B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 26, 2018 |
| Grant date | Apr 13, 2021 |
| Priority date | — |
| Expiry date | Dec 26, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/88
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A white balance adjustment device includes a statistics acquisition portion and a correction portion. The statistics acquisition portion includes an area setting portion including a luminance area setting portion configured to set a plurality of luminance ranges, and an average value calculation portion configured to calculate an average value of color difference values of the image signal in each of the plurality of luminance ranges set by the luminance area setting portion. The correction portion includes a correction function determination portion configured to determine a correction function of the color difference values of the image signal based on the average value of the color difference values calculated by the average value calculation portion, and a color difference correction portion configured to correct the color difference values of the image signal based on the correction function determined by the correction function determination portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.