Two-dimensional code finder pattern detection method
A technology of image-seeking graphics and detection methods, applied in the field of two-dimensional codes, can solve the problems of slow decoding speed, poor anti-fuzziness, and low recognition degree, and achieve strong anti-fouling ability, high recognition degree, and fast interpretation speed Effect
Active Publication Date: 2018-03-02
SYSU CMU SHUNDE INT JOINT RES INST +3
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For example, in the field of traceability, two-dimensional codes are used as product labels, and t
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[0035] The drawings are for illustrative purposes only, and should not be construed as limitations on this patent; in order to better illustrate this embodiment, some parts in the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product;
[0036] For those skilled in the art, it is understandable that some well-known structures and descriptions thereof may be omitted in the drawings.
[0037] Such as figure 1 , a detection method of a two-dimensional code image-seeking pattern, the detection method comprises the following steps:
[0038] S1: Recognition of solid circles: Use the autonomous recognition algorithm to scan the label picture, find the solid circle graphics and determine the center and radius of the solid circle, and use the area formed by the outermost boundary of all solid circle graphics as the two-dimensional code matrix area;
[0039] S2: Determine image-finding graphics: Determine the solid circle according to step S...
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The invention discloses a two-dimensional code finder pattern detection method. The detection method comprises steps that S1, a solid circle is identified, an autonomous identification algorithm is employed to scan a label picture, a solid circle pattern is searched, a circle center and a radius of the solid circle are determined, and an area formed by the outer-most boundary of the solid circle pattern is taken as a two-dimensional code matrix area; S2, a finder pattern is determined, the solid circle is determined according to the step S1, a center angle and a center distance are solved, whether the relationship between the center angle and the center distance satisfies preset conditions is determined, if yes, the solid circle is the searched finder pattern, if not, the process turns tothe step S1, and scanning continues. The method is advantaged in that the autonomous identification algorithm is employed to identify the solid circle finder pattern, the solid circle is taken as thefinder pattern, compared with a QR code finder pattern, properties of stronger fouling resistance capability, higher identification degree and the faster interpretation speed are realized.
Description
technical field [0001] The invention relates to the field of two-dimensional codes, and more specifically, to a method for detecting image-finding patterns of two-dimensional codes. Background technique [0002] At present, the application range of two-dimensional code is more and more extensive, involving various application scenarios, from payment to product traceability, entering various fields, from biopharmaceuticals to the Internet, everywhere; in the era of the Internet of Things, two-dimensional codes are used as item ID , Yiran has become the foundation of the Internet of Everything. At the same time, with the continuous expansion of application scenarios and the continuous expansion of users, the QR code market has skyrocketed unprecedentedly, user needs have been further explored, and the market has begun to be subdivided. For different fields, the functions of QR codes will be concentrated in certain aspects. Improve. For example, in the field of traceability, ...
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Login to View More IPC IPC(8): G06K7/14
CPCG06K7/1417G06K7/1443G06K7/1452
Inventor 谭洪舟李小敏陈荣军谢舜道周达敏嵇志辉朱雄泳曾衍瀚路崇
Owner SYSU CMU SHUNDE INT JOINT RES INST