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. 21, 2021
Filed:
Dec. 16, 2019
Shenzhen Lontium Semiconductor Technology Co., Ltd., Guangdong, CN;
Xu Sun, Guangdong, CN;
Jixing Ye, Guangdong, CN;
Wenhan Yin, Guangdong, CN;
Ligang Hu, Guangdong, CN;
Shiyong Liang, Guangdong, CN;
Changfang Yue, Guangdong, CN;
Rongliang Yu, Guangdong, CN;
SHENZHEN LONTIUM SEMICONDUCTOR TECHNOLOGY CO., LTD., Shenzhen, CN;
Abstract
A method and a device for enhancing brightness and contrast of a video image are provided. In the method, an inflection point, a truncation point, a maximum value of a brightness component, and a minimum value of the brightness component of an image frame to be processed are determined based on the brightness component of the image frame to be processed, a piecewise linear function is determined based on the inflection point, and brightness and contrast enhancement processing is performed on the image frame to be processed based on the piecewise linear function. Compared with the brightness and contrast enhancement method in conventional art, the method and device of the application can achieve better brightness and contrast enhancement effects.