Time based offset correction for imaging systems and adaptive calibration control
US9924116B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2016 |
| Grant date | Mar 20, 2018 |
| Priority date | — |
| Expiry date | Sep 16, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/73
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and an imaging system for adaptive shutter control wherein an imaging system can be configured to actuate a calibration element at various times and develop an offset correction or Non-Uniformity Correction (NUC). The system control processing units may acquire information derived from calibration data, regular imaging data or external data, which may be correlated with how fast the NUC is changing over time. How often calibration element is actuated may be adaptively determined from the correlating information and the actuation times may be adaptively controlled to optimally actuate as needed. In some embodiments the calibration element may be a shutter and calibration activation may include closing the shutter and providing a flat field image for calibration purposes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.