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:
Sep. 29, 2026
Filed:
Oct. 17, 2022
Objectvideo Labs, Llc, Tysons, VA (US);
Gang Qian, McLean, VA (US);
Allison Beach, Leesburg, VA (US);
ObjectVideo Labs, LLC, Tysons, VA (US);
Abstract
Methods, systems, and apparatus, including computer programs encoded on computer storage media, for extrinsic camera calibration using a calibration object. One of the methods includes: determining physical locations of interest points of a calibration object in a calibration object centered coordinate system; determining pixel locations of the interest points in an image of the calibration object captured by a camera; determining, using the pixel locations and the physical locations, a transformation from the calibration object centered coordinate system to a camera centered coordinate system; and determining, using the transformation, a camera tilt angle and a camera mount height of the camera for use in analyzing images captured by the camera.