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:
Nov. 04, 2025
Filed:
Mar. 07, 2023
Montage Lz Technologies (Chengdu) Co., Ltd., Sichuan, CN;
MONTAGE LZ TECHNOLOGIES (CHENGDU) CO., LTD., Chengdu, CN;
Abstract
This application relates to a method and a device for changing a dynamic range of luminance of an image. The method comprises: extracting luminance statistical information of at least a portion of pixels of a frame to be processed, wherein the frame to be processed has an original dynamic range of luminance; clustering the at least a portion of pixels into pixel groups divided by multiple luminance flag values based on the luminance statistical information of at least a portion of pixels, wherein each of the pixel groups includes a predetermined number of pixels, and pixels of each two adjacent pixel groups are divided by one of the multiple luminance flag values; and generating a conversion mapping relationship based on the multiple luminance flag values such that the frame to be processed is converted into a target frame with a target dynamic range of luminance based on the conversion mapping relationship, wherein the conversion mapping relationship associates original luminance values in the original dynamic range of luminance with target luminance values in the target dynamic range of luminance.