Image-based indoor position determination

Patent metadata

Field	Value
Publication number	US-9020191-B2
Application number	US-201313757645-A
Country	US
Kind code	B2
Filing date	Feb 1, 2013
Priority date	Nov 30, 2012
Publication date	Apr 28, 2015
Grant date	Apr 28, 2015

Abstract

In one implementation, a method may comprise: determining a topological representation of an indoor portion of a building based, at least in part, on positions or number of lines in an image of the indoor portion of the building; and comparing the topological representation to one or more stored topological representations, for example in a digital map of the building, to determine a potential position of the indoor portion of the building.

First claim

What is claimed is:

1. A method comprising:
extracting linear features from an image of an indoor portion of a building, said image captured by a camera at a mobile station;
determining a topological representation of said indoor portion based, at least in part, on positions or quantity of said linear features in said image; and
annotating said image with a rotation vector based, at least in part, on an inertial sensor or gravitometer, said rotation vector comprising informati…

Assignees

• Qualcomm Inc

Inventors

• Gupta Rajarshi
• Das Saumitra Mohan
• Chao Hui
• Naguib Ayman Fawzy

Classifications

• G06V20/10

  Physics · mapped topic

• G06T7/75 Primary

  Physics · mapped topic

• G06K9/6202 Primary

  Physics · mapped topic

• G06T7/0046

  Physics · mapped topic