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:
Sep. 15, 2015
Filed:
Dec. 12, 2013
Peking University Founder Group Co., Ltd., Beijing, CN;
Founder Mobile Media Technology (Beijing) Co., Ltd., Beijing, CN;
Ling Zhang, Beijing, CN;
Chao Guan, Beijing, CN;
Zhenhua Liu, Beijing, CN;
Gezhang Liu, Beijing, CN;
Wanyi Che, Beijing, CN;
PEKING UNIVERSITY FOUNDER GROUP CO., LTD., Beijing, CN;
FOUNDER MOBILE MEDIA TECHNOLOGY (BEIJING) CO., LTD., Beijing, CN;
Abstract
Method and system for decoding a two dimensional code is disclosed. In the binarization process of a two dimensional code image, through performing a dividing operation on the two dimensional code image, each block region has a different grayscale threshold. For each block region, whether a pixel in the block region is determined as black or white is not solely based on the grayscale value of the pixel itself, but also an average grayscale value of a predetermined area set for the block region where the pixel locates. When the predetermined area in which the block region locates has a larger grayscale value as a whole, the grayscale threshold corresponding to the block region may become larger, and vice versa.