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. 01, 2022
Filed:
Jun. 21, 2021
Beijing Baidu Netcom Science and Technology Co., Ltd., Beijing, CN;
Ke Lin, Beijing, CN;
Wenpeng Ding, Beijing, CN;
BEIJING BAIDU NETCOM SCIENCE AND TECHNOLOGY CO., LTD., Beijing, CN;
Abstract
An implementation of a method for adjusting a quantization parameter for adaptive quantization may include: acquiring at least one pixel block corresponding to a to-be-compressed image and an initial quantization parameter adjustment value corresponding to the pixel block, the initial quantization parameter adjustment value being generated based on an image objective quality evaluation index; determining a just noticeable difference, JND, threshold corresponding to each pixel point in the at least one pixel block; determining a block JND threshold corresponding to each pixel block, based on the JND threshold corresponding to each pixel point in the at least one pixel block; and adjusting the corresponding initial quantization parameter adjustment value based on the block JND threshold to generate an adjusted quantization parameter adjustment value corresponding to the at least one pixel block.