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:
Dec. 02, 2025
Filed:
Aug. 08, 2023
Cienet Technologies (Beijing) Co., Ltd., Beijing, CN;
Yuance Deng, Beijing, CN;
CIENET TECHNOLOGIES (BEIJING) CO., LTD., Beijing, CN;
Abstract
Disclosed are a shadow elimination method and apparatus for a text image, and an electronic device. The method comprises the following steps: converting a text image to be processed into a first grayscale image; performing convex height sorting processing on the first grayscale image to determine a background grayscale segmentation threshold of the first grayscale image and a text grayscale segmentation threshold within a shadow region of the first grayscale image; processing the background grayscale segmentation threshold and the text grayscale segmentation threshold to respectively obtain a shadow region mask representation and a non-shadow region mask representation; performing background enhancement on the first grayscale image to obtain a second grayscale image; and performing fusion processing on the shadow region having the background enhancement in the second grayscale image and the non-shadow region in the first grayscale image according to the shadow region mask representation and the non-shadow region mask representation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile