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. 12, 2017
Filed:
Apr. 17, 2012
Aaron Michael Burry, Ontario, NY (US);
Claude Fillion, Rochester, NY (US);
Vladimir Kozitsky, Rochester, NY (US);
Raja Bala, Webster, NY (US);
Zhigang Fan, Webster, NY (US);
Aaron Michael Burry, Ontario, NY (US);
Claude Fillion, Rochester, NY (US);
Vladimir Kozitsky, Rochester, NY (US);
Raja Bala, Webster, NY (US);
Zhigang Fan, Webster, NY (US);
Conduent Business Services, LLC, Dallas, TX (US);
Abstract
A method, system, and computer-usable tangible storage device for robustly cropping and accurately recognizing license plates to account for noise sources and interfering artifacts are disclosed. License plate images and sub-images can be tightly cropped utilizing an image-based classifier and gradient-based cropping. An image-based classifier can identify the location of valid characters within the image. Because of a number of noise sources, such as, for example, residual plate rotation and shear in the characters within the image, the image-based classifier performs a 'rough' identification of the image boundaries. An additional processing step utilizing gradient-based cropping is performed to fine-tune the license plate image boundaries. Gradient-based cropping eliminates unwanted border artifacts that could substantially impact the segmentation and license plate character recognition results.