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 10552949 B1

PDF
Full Text
Expired
Date of Patent:
Feb. 04, 2020

Filed:

Dec. 21, 2017
Applicant:

Abbyy Development Llc, Moscow, RU;

Inventors:

Vasily Vasilyevich Loginov, Moscow, RU;

Ivan Germanovich Zagaynov, Dolgoprudniy, RU;

Assignee:

ABBYY PRODUCTION LLC, Moscow, RU;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06T 5/00 (2006.01); G06K 9/18 (2006.01); G06K 9/00 (2006.01); G06K 9/32 (2006.01);
U.S. Cl.
CPC ...
G06T 5/008 (2013.01); G06K 9/00463 (2013.01); G06K 9/18 (2013.01); G06K 9/325 (2013.01); G06T 5/002 (2013.01);
Abstract

The subject matter of this specification can be implemented in, among other things, a method including identifying one or more blocks in an electronic image that depicts text characters. The method includes identifying one or more text blocks among the blocks that depict the text characters. The method includes identifying an average text contrast for each of the text blocks. The method includes identifying a type for each pixel in each of the text blocks based on the average text contrast. The method includes performing local adaptive filtering on a first neighborhood of pixels around each pixel in each of the text blocks to determine a brightness for the pixel based on the identified type. The method includes storing, in at least one memory, the electronic image including the determined brightness for each pixel in each of the text blocks.


Find Patent Forward Citations

Loginov, Vasily. (2020). Contrast enhancement and reduction of noise in images from cameras (U.S. Patent No. 10552949). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10552949

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