Matching an approximately located query image against a reference image set using cellular base station and wireless access point information
US8774527B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2012 |
| Grant date | Jul 8, 2014 |
| Priority date | — |
| Expiry date | Jan 2, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V20/39
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Aspects of the disclosure pertain to matching a selected image/photograph against a database of reference images having location information. The image of interest may include some location information itself, such as latitude/longitude coordinates and orientation. This location information may be based on information obtained when the user's device interacts with base stations or other access points in a wireless communication network, such as signal strength information. The location information is used as an estimated location. The image of interest and the estimated location are used to select one or more cells to match the image against. Each cell may have multiple images and an index. The image is compared against specific cells, and if a match is found, a front end server identifies the correct location and orientation of the received image, and may correct errors in the estimated location of the user device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.