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:
Mar. 21, 2017
Filed:
Dec. 12, 2014
GM Global Technology Operations Llc, Detroit, MI (US);
Qingrong Zhao, Madison Heights, MI (US);
Qi Zhang, Sterling Heights, MI (US);
Jinsong Wang, Troy, MI (US);
Bakhtiar Litkouhi, Washington, MI (US);
Wende Zhang, Troy, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
Systems and methods use an image of a road surface that is generated by a camera. The image includes a pattern from a light source. A region of interest in the image is determined based on the pattern from the light source. A total area is determined that includes at least part of the region of interest and an area adjacent the region of interest. A feature vector is extracted based on the region of interest and the total area. A road condition is determined based on the feature vector and a classifier.