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:
Jun. 18, 2019
Filed:
Feb. 01, 2018
The Charles Stark Draper Laboratory, Inc., Cambridge, MA (US);
James Laney, Wayne, PA (US);
Richard W. Madison, Bedford, MA (US);
Robert Truax, Canton, MA (US);
Theodore J. Steiner, III, Boston, MA (US);
Eric Jones, Natick, MA (US);
The Charles Stark Draper Laboratory, Inc., Cambridge, MA (US);
Abstract
A navigation system provides pose, i.e., location and orientation, solutions using best available location information from two or more location systems. One of the location systems is a fiducial-based location system, which is accurate when a sufficient number of fiducials is recognized. However, when an insufficient number of fiducials is recognized, an odometry-based location system is used. Although the odometry-based location system is subject to drift, when a sufficient number of fiducials is recognized, the fiducial-based location system is used to correct the odometry-based location system. The navigation system provides robust, accurate and timely pose solutions, such as for augmented reality (AR) or virtual reality (VR) systems, without the time-consuming requirement to establish and localize many fiducials or the computational and memory requirements of pure fiducial-based location systems, and without the inherent drift of pure odometry-based location systems.