Auto white balance control algorithm based upon flicker frequency detection
US10602111B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2017 |
| Grant date | Mar 24, 2020 |
| Priority date | — |
| Expiry date | Sep 6, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/69
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Techniques for auto white balancing of captured images based on detection of flicker in ambient light is described. When flicker is detected in ambient light during an image capture event, and the flicker is unchanging during the image capture event, a white point of image data may be estimated according to a first technique. When flicker is detected in ambient light during an image capture event, and the flicker is changing during the image capture event, a white point of image data may be estimated according to a second technique. When flicker is not detected, a white point of image data may be estimated according to a third technique. Image data may be color corrected based on the estimated white point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.