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. 08, 2020
Filed:
Mar. 08, 2017
Hangzhou Hikvision Digital Technology Co., Ltd., Zhejiang, CN;
Shiliang Pu, Zhejiang, CN;
Yi Niu, Zhejiang, CN;
Zuozhou Pan, Zhejiang, CN;
Binghua Luo, Zhejiang, CN;
Abstract
Embodiments of the present disclosure provide a method and apparatus for detecting a license plate. The method comprises: obtaining, according to pixel values of pixels in an image to be detected, a candidate license plate area Min the image to be detected (S); calculating an aspect ratio of the candidate license plate area Mand determining if the aspect ratio is greater than a first predefined threshold (S); determining, if the aspect ratio is greater than the first predefined threshold, a new candidate license plate area Mfrom the candidate license plate area Maccording to a predefined machine learning-based regression algorithm (S); determining, according to a first predefined classification model, whether the candidate license plate area Mis a license plate area (S); determining, if the candidate license plate area Mis a license plate area, the candidate license plate area Mas a license plate area, and generating a detection result based on the candidate license plate area M(S). The application of the solution improves the accuracy of license plate detection.