Apparent video brightness control and metric
US11348470B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 7, 2021 |
| Grant date | May 31, 2022 |
| Priority date | — |
| Expiry date | Jan 7, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/10
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An aircraft display control system is disclosed. The system comprises one or more displays configured to present a video stream of a surrounding environment to a user of the aircraft, image sensors configured to generate images of the surrounding environment, and a controller configured to execute an enhanced vision system (EVS) module, a synthetic vision system (SVS) module, a combined vision system (CVS) module and a brightness equalization module. The brightness equalization module measures an apparent brightness of a first frame of the video stream and applies a sigmoid transform function to equalize grayscale levels of a second frame of the video stream based on the apparent brightness of the first frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.