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:
Apr. 13, 2021
Filed:
Oct. 18, 2019
Shenzhen Goodix Technology Co., Ltd., Guangdong, CN;
Chung-Te Li, Guangdong, CN;
Chieh-Wei Lo, Guangdong, CN;
SHENZHEN GOODIX TECHNOLOGY CO., LTD., Guangdong, CN;
Abstract
A fingerprint image enhancement method, comprising: receiving a fingerprint image; computing a horizontal variation image and a vertical variation image of the fingerprint image (); computing a weighted image, wherein a weighted value of a first pixel corresponding to a finger ridge in the weighted image is greater than a weighted value of a second pixel corresponding to a finger valley (); multiplying the horizontal variation image with the weighted image to generate a weighted horizontal variation image, and multiplying the vertical variation image with the weighted image to generate a weighted vertical variation image (); computing a fingerprint orientation image according to the weighted horizontal variation image and the weighted vertical variation image (); and performing fingerprint image enhancement on the fingerprint image according to the fingerprint orientation image ().