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:
Jun. 30, 2015
Filed:
Dec. 11, 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., LTD., Beijing, CN;
FOUNDER MOBILE MEDIA TECHNOLOGY (BEIJING) CO., LTD., Beijing, CN;
Abstract
Method and system for correcting a QR code image is provided. An initial coordination system and a correction coordination system are determined at first. Conversion coefficients are obtained according to the coordinates of the central point of each detection pattern, the coordinates of the locating point in the initial coordinate system, the correction coordinate system. For each point in the correction coordinate system, its corresponding module in the initial coordinate system is found out, and the grayscale value of that module is assigned to the point to realize the correction of the QR code image. Coordinates of the three detection patterns, the locating point in the initial coordination system, and the correction coordinate system may be readily obtained according to different version numbers. At the same time, shortcomings caused by edge detection may be avoided, and a favorable correction effect may be obtained.