Method and system for robust contrast based auto focus in low light
US11082606B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2018 |
| Grant date | Aug 3, 2021 |
| Priority date | — |
| Expiry date | Jan 20, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20024
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Determining a focus setting includes determining a plurality of regions of interest in a view of a scene, and, for each of the plurality of regions of interest, obtaining a set of image data for each of multiple focal positions, and then applying focus filters to the set of image data for each of the plurality of focal positions for each of the regions of interest to obtain a set of focus scores, i.e., a focus score for each focus filter applied to the set of image data for each of the focal positions. Further, determining a confidence value associated with each of the sets of focus scores, selecting a subset of the sets of focus scores based on the confidence values associated with each of the sets of focus scores, and determining a focus setting for the scene based on the selected subset of the focus scores.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.