Positioning based on illumination sources
US11143509B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2017 |
| Grant date | Oct 12, 2021 |
| Priority date | — |
| Expiry date | Nov 7, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W4/029
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method comprising: A) using a mobile device's camera to capture a first image; B) by reference to a first illumination source appearing in the first image, determining first heading information of the mobile device; C) as the mobile device moves to a second location, using one or more inertial sensors of the mobile device to extrapolate a plurality of extrapolated first candidate locations and respective first candidate headings of the mobile device; D) at the second location, using the camera to capture a second image; E) by reference to a second illumination source appearing in the second captured image, determining a plurality of second candidate locations and respective second candidate headings of the mobile device; and F) based on a comparison of the extrapolated first candidate locations and headings with the second candidate locations and headings, determining at least one estimated location and respective heading of the mobile device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.