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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.:

US 12499698 B1

PDFFull Text
Date of Patent:
Dec. 16, 2025

Filed:

Mar. 02, 2023

Method for extracting characters from vehicle license plate, and license plate character extraction device for performing method

Applicant:

SK Telecom Co., Ltd., Seoul, KR;

Inventors:

Heeyul Lee, Seoul, KR;

Chunghun Kang, Seoul, KR;

Yongsung Kim, Seoul, KR;

Taewan Kim, Seoul, KR;

Seungji Yang, Seoul, KR;

Assignee:

SK Telecom Co., Ltd., Seoul, KR;

Attorney:

WTA IP Law P.C.

Primary Examiner:

Huo Long Chen

Int. Cl.
CPC ...
G06V 20/70 (2022.01); G06V 20/62 (2022.01); G06V 30/148 (2022.01); G06V 30/16 (2022.01); G06V 30/18 (2022.01); G06V 30/19 (2022.01);
U.S. Cl.
CPC ...
G06V 20/625 (2022.01); G06V 20/70 (2022.01); G06V 30/153 (2022.01); G06V 30/16 (2022.01); G06V 30/18 (2022.01); G06V 30/19013 (2022.01); G06T 2207/30252 (2013.01); G06T 2210/12 (2013.01);
Abstract

There is provided a method of extracting characters from a license plate of a vehicle performed by a license plate character extraction device. The method comprises: converting a input image obtained by capturing the license plate of the vehicle into a grayscale image; generating a converted image based on a result of comparing a value of at least one pixel included in the grayscale image with a first average of values of pixels adjacent to the at least one pixel; generating a refined image based on a result of comparing the converted image with a binarized image obtained by binarizing the converted image; and extracting characters included in the refined image.

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