Positioning system using triangulation positioning based on three pixel positions, a focal length and the two-dimensional coordinates
US10007825B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2014 |
| Grant date | Jun 26, 2018 |
| Priority date | — |
| Expiry date | Mar 15, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/245
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A positioning system for positioning a to-be-positioned device includes three or more reference objects each providing individual unique feature information associated with a two-dimensional coordinate. A positioning device includes an image capturing unit obtaining image data of three of the reference objects, and a processing unit obtaining, based on the image data, three pixel positions corresponding respectively to the three reference objects in the image data, obtaining the two-dimensional coordinate of the location of the three reference objects, and estimating a positioning coordinate of the to-be-positioned device using a triangulation positioning method based on the three pixel positions, a focal length used for obtaining the image data and the two-dimensional coordinates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.