Exposure time determination method for image sensing operation
US10417476B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2017 |
| Grant date | Sep 17, 2019 |
| Priority date | — |
| Expiry date | Apr 25, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1341
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An exposure time determination method for image sensing operation includes: providing a first stage exposure condition which includes a first exposure time; sensing an image according to the first stage exposure condition to generate a first histogram which has a first histogram brightness maximum, a first histogram brightness minimum, and a first histogram width; increasing or decreasing the first exposure time to a second exposure time as a second stage exposure condition, and sensing the image according to the second stage exposure condition to generate a second histogram which has a second histogram brightness maximum, a second histogram brightness minimum, and a second histogram width; comparing the first histogram width with the second histogram width to generate a comparison result, and determining a third exposure time to be a third stage exposure condition according to the comparison result; and sensing the image according to the third stage exposure condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.