Method and system for converting trajectory coordinates of moving objects
US12272074B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2024 |
| Grant date | Apr 8, 2025 |
| Priority date | — |
| Expiry date | Nov 7, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30241
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Provided is a method and system for converting trajectory coordinates of moving objects, including: capturing a video of moving objects by drone; extracting trajectory data of moving objects in pixel coordinate system; solving a representation of unit direction vector corresponding to target point in camera coordinate system in ECEF coordinate system based on location information of drone, attitude information of camera, and intrinsic parameter information of camera during capturing of each frame, and in combination with pixel coordinates of target point in pixel coordinate system, to obtain a representation of vector from ECEF origin to the target point; and, representing coordinates of target point in WGS84 coordinate system by using the representation of vector from the ECEF origin to the target point, and finally obtaining the coordinates of target point in WGS84 coordinate system based on target point altitude is the same as altitude at which the drone takes off.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.