Autoexposure method
US11425311B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2022 |
| Grant date | Aug 23, 2022 |
| Priority date | — |
| Expiry date | Feb 28, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/71
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for controlling an autoexposure function of a camera to a gray level setting, the method including exposing an imaging device of the camera for a first exposure duration and obtaining a first gray level of the imaging device of the camera, exposing the imaging device of the camera for a second exposure duration within the first exposure duration and the maximum exposure duration and obtaining a second gray level of the imaging device of the camera, determining whether the first gray level and the second gray level are upward-trending from the first exposure duration to the second exposure duration and if the first gray level and the second gray level are determined to be upward-trending, interpolating for a target exposure duration based on the gray level setting, the first exposure duration and the first gray level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.