Non-uniformity correction (NUC) self-calibration using images obtained using multiple respective global gain settings
US11632506B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 13, 2021 |
| Grant date | Apr 18, 2023 |
| Priority date | — |
| Expiry date | Jul 13, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/75
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A non-uniformity correction (NUC) calibration method comprises obtaining image data for a plurality of images with an image sensor, wherein each image in the plurality of images is obtained at a different respective global pixel gain setting and global expose in the image sensor; and using the image data for non-uniformity correction calibration to compute pixel NUC values for the pixels in the image sensor. The method can further include storing the pixel NUC values and obtaining further image data corrected by the stored pixel NUC values. In embodiments, the method can include moving a platform based on the further image data. In certain embodiments, the platform can be a guided munition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.