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:
Oct. 13, 2020
Filed:
Dec. 26, 2017
Xidian University, Xi'an, Shaanxi, CN;
Huixin Zhou, Shaanxi, CN;
Dong Zhao, Shaanxi, CN;
Runda Qian, Shaanxi, JP;
Xiuping Jia, Shaanxi, CN;
Jun Zhou, Shaanxi, CN;
Hanlin Qin, Shaanxi, CN;
Bo Yao, Shaanxi, CN;
Yue Yu, Shaanxi, CN;
Huan Li, Shaanxi, CN;
Jiangluqi Song, Shaanxi, CN;
Bingjian Wang, Shaanxi, CN;
Yangqun Jin, Shaanxi, CN;
Shenghui Rong, Shaanxi, CN;
Kuanhong Cheng, Shaanxi, CN;
Kun Qian, Shaanxi, CN;
XIDIAN UNIVERSITY, Xi'an, CN;
Abstract
A non-uniformity correction method for an infrared image based on guided and high-pass filtering includes: assigning high-frequency component of first image frame of original image sequence to first fixed pattern noise f; successively loading N-th image frame of the original image sequence with non-uniformity as current image frame, determining a difference between the current image frame and (N−1)-th image frame to obtain (N−1)-th differential image frame, and obtaining a relative change amplitude of each image element of (N−1)-th image frame according to the (N−1)-th differential image frame; and performing high-pass filtering based on a combination of a high-frequency component of the current image frame obtained through guided filtering and the relative change amplitude to obtain n-th fixed pattern noise f, and performing non-uniformity correction on the current image frame according to fto obtain a correction result of the current image frame, where N≥2, n≥2.