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. 10, 2023
Filed:
Aug. 26, 2022
Chengdu Image Design Technology Co., Ltd., Chengdu, CN;
Hua Cai, Chengdu, CN;
Yong Wang, Chengdu, CN;
Zheng Chen, Chengdu, CN;
Fei Chen, Chengdu, CN;
Tian Xia, Chengdu, CN;
Chengdu Image Design Technology Co., Ltd., Chengdu, CN;
Abstract
A method and a system for reducing column noise of an image sensor are provided. The method includes: reading dark pixel data in each image frame and reading initial effective pixel data in each image frame, where dark pixels and initial effective pixels are both arranged in N columns; sequentially calculating the dark pixel data to obtain an average value of each column of dark pixels and an entire average value of the dark pixels in each image frame; obtaining a corrected value of each column according to the average value of each column of dark pixels and the entire average value of the dark pixels; and calculating the corrected value of each column and the corresponding initial effective pixel data in each image frame to obtain target effective pixel data. In the method, the dark pixel data is pre-processed.