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:
Apr. 27, 2021
Filed:
Jun. 02, 2020
Facebook Technologies, Llc, Menlo Park, CA (US);
Joern Rehder, Winterthur, CH;
Janosch Nikolic, Zurich, CH;
Dong Yang, Milpitas, CA (US);
Oskar Linde, San Carlos, CA (US);
Jijie Xu, San Jose, CA (US);
Kenneth Chi Kin Ng, Santa Clara, CA (US);
Steven G. McClellan, Santa Clarita, CA (US);
Facebook Technologies, LLC, Menlo Park, CA (US);
Abstract
A calibration system includes a grid assembly, a platform, and a controller. The grid assembly includes at least one planar grid. The platform couples to a device under test (DUT) and move the DUT to a plurality of test positions in accordance with a motion sequence. Each test position is reached by a rotation about at most two different axes, and as the DUT moves through the motion sequence, at least one camera on the DUT captures image information describing portions of the grid assembly and an inertial measurement unit (IMU) on the DUT captures IMU information. The controller determines calibration information for the at least one camera on the DUT and for the IMU based in part on a parameterized model of the motion sequence of the DUT, the captured image information, and the captured IMU information.