Aerial camera system and method for correcting distortions in an aerial photograph
US9154717B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 3, 2010 |
| Grant date | Oct 6, 2015 |
| Priority date | — |
| Expiry date | Nov 26, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/18
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to a method for correcting a distortion in an aerial photograph caused by a flight movement in the forward direction. The aerial photograph is captured by a surface sensor, the sensor lines of which sensor are exposed at different, successive exposure times, so that each individual sensor line senses a strip of terrain of the terrain flow over at the different exposure times. A relative flight altitude above the strips of terrain captured by the respective sensor line is assigned to the individual sensor lines. Furthermore, a compensation factor is separately determined for each of the individual sensor lines, wherein the factor depends on an air speed of the flying object, a focal length of the aerial camera and the relative flight altitude assigned to the respective sensor line, and corrects the distortion in the aerial photograph for the lines based on the respective compensation factor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.