Methods and systems to facilitate passive relocalization using three-dimensional maps

US12299918B2 · kind B2 · utility

Assignee

• Meta Platforms Technologies, LLC · US

Inventors

• Armin Alaghi · Kirkland, US
• Muzaffer Kal · Redmond, US
• Vincent Lee · Winchester, US
• Richard Andrew Newcombe · Seattle, US

Key dates

• Filing date: Jan 26, 2022
• Grant date: May 13, 2025
• Expiry date: Apr 13, 2042

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04W4/06
• WIPO field: IT methods for management
• WIPO sector: Electrical engineering

Abstract

A method includes accessing map data of an area of a real environment, the map data comprising three-dimensional feature descriptors describing features visible in the real environment. A plurality of map packages are generated based on the map data, wherein each of the map packages (1) corresponds to a two-dimensional sub-area within the area of the real environment, and (2) comprises a subset of the three-dimensional feature descriptors describing features visible in the sub-area. A first sequence of the plurality of map packages are broadcast through one or more base stations, wherein the first sequence is based on the two-dimensional sub-area of each of the map packages, wherein each of the map packages is configured to be received and used by an artificial-reality device to determine a pose of the artificial-reality device in the associated sub-area based on the associated subset of the three-dimensional feature descriptors.