Imaging device with shutter providing partial attenuation
US10321076B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2017 |
| Grant date | Jun 11, 2019 |
| Priority date | — |
| Expiry date | Sep 20, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/631
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A partially attenuating shutter may be used to identify and reduce fixed pattern noise (FPN) associated with imaging devices. In one example, a system includes an image capture component configured to capture images in response to incident radiation from a scene along an optical path. The system includes a shutter configured to attenuate a first portion of the incident radiation and permit a second portion of the incident radiation to pass. The system also includes an actuator configured to translate the shutter between an open position out of the optical path, and a closed position in the optical path between the scene and the image capture component. The system also includes a processor configured to determine a plurality of FPN correction terms using images captured by the image capture component while the shutter is in the open and closed positions. Related systems and methods are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.