The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 03, 2020
Filed:
Jan. 23, 2019
Facebook Technologies, Llc, Menlo Park, CA (US);
Christian Forster, Baar, CH;
Facebook Technologies, LLC, Menlo Park, CA (US);
Abstract
In one embodiment, a computing system is configured to track objects in an environment or localize a user device. For example, the system accesses an image of an environment captured from a viewpoint. Based on the image, the system detects landmarks that are associated with objects in the environment and identifies expected landmarks that are expected to be observable from the viewpoint using a landmark database. The system determines that at least one of the expected landmarks is currently unobservable in the environment by comparing the expected landmarks with the detected landmarks. By accessing semantic information associated with the at least one expected landmark, the system updates the landmark database based on a determination that the semantic information satisfies predetermined criteria and removes the at least one expected landmark from the landmark database. The system performs object tracking, object mapping, or re-localization within the environment using the updated landmark database.