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:
Jan. 16, 2024
Filed:
Aug. 11, 2021
Realtek Semiconductor Corp., Hsinchu, TW;
Yan-Fong Chen, Hsinchu, TW;
Wen-Tsung Huang, Hsinchu, TW;
REALTEK SEMICONDUCTOR CORP., Hsinchu, TW;
Abstract
A method and a system for compensating an image having fixed pattern noise are provided. The method is adapted to a 4-cell sensor and can automatically calculate appropriate compensation parameters for fixed pattern noise according to non-uniformity of the sensor and lens. Since the defects in the sensor or the lens may cause non-uniform fixed pattern noise, an image is firstly divided into multiple grids and a pixel average of every channel in the grids is calculated. Afterwards, a fixed pattern noise compensation coefficient of every pixel can be calculated according to characteristics of the image formed by the 4-cell sensor. In one aspect, the compensation coefficient of the current pixel can be calculated by extrapolation or interpolation. The fixed pattern noise in the image can be corrected.