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:
Jan. 07, 2025
Filed:
Jul. 07, 2022
GM Cruise Holdings Llc, San Francisco, CA (US);
Himil Narayan Sheth, San Francisco, CA (US);
Zhizhong Yan, San Francisco, CA (US);
GM Cruise Holdings LLC, San Francisco, CA (US);
Abstract
The present technology pertains to determining whether traffic signal cameras of an AV are miscalibrated. One technique for determining if a given traffic signal camera is miscalibrated includes obtaining an image from a traffic signal camera, marking the location of a traffic signal in the image with a bounding box, and determining if the light sources of the traffic signal are within the bounding box. If not, an alternate reason check is performed to determine whether an alternate reason exists for why the light source of the traffic signal is not within the bounding box. If no such reason exists, then the traffic signal camera may be miscalibrated. An additional calibration check may be performed using images from two traffic signal cameras of the AV each having four common light sources, and performing a homographic computation using the location of the light sources in the images.