Aerial vehicle with spectral shaping filtering
US11044448B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2019 |
| Grant date | Jun 22, 2021 |
| Priority date | — |
| Expiry date | Aug 12, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64U2101/40
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Spectral filtering or shaping is applied to an imaging system of an aerial vehicle such as a UAV to ensure that the measurements between a camera system and an ambient light sensor system are proportional under all light conditions. The spectral filtering is applied so that the resulting spectral sensitivity curves of the ambient light sensor system and of the camera system are proportional to one another over a spectral region. Thereafter, it is determined if there is a difference between a target ambient lighting condition and a real-time ambient lighting condition collected by the ambient light sensor system when an image was obtained. If a difference exists, a color correction can be applied to the image. This results in more accurate color correction and more spectrally accurate and consistent images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.