Height measurement apparatus
US7123749B2 · kind B2 · utility
2Cited by
14References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 24, 2001 |
| Grant date | Oct 17, 2006 |
| Priority date | — |
| Expiry date | Oct 12, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30252
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus and methods for enhancing the accuracy of height above ground measurements in which the registration error between successive images taken of the terrain over which an aircraft is flying is minimized, the earlier image having first been transformed according to measurements of the aircraft linear and angular velocities, the focal length and attitude of the image sensor, and an initial, coarse height estimate. By an iterative process, a more accurate height estimate is obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.