A color circular two-dimensional code and its generation and decoding method

Abstract

The invention discloses a color annular two-dimensional code and a generating and decoding method thereof. The two-dimensional code comprises a black and white positioning area. The positioning area comprises a solid circle and a first circular ring and a second circular ring which are located outside the solid circle. The first circular ring and the second circular ring are two concentric circular rings. The data area is a third circular ring concentric with the positioning area, the positioning area is located on the inner side of the third circular ring, and the third circular ring is divided into a plurality of data blocks. The two-dimensional code generation method comprises the following steps: converting a data stream into a quaternion number, and coloring a plurality of data blocksaccording to a corresponding relationship between the quaternion number and colors. During decoding, the center of the positioning area is found first, and then scanning decoding is carried out underpolar coordinates. According to the invention, a color coding and scanning-based decoding method is adopted, so that the image distortion resistance can be effectively improved while the new two-dimensional code reaches the basic information capacity.

Description

technical field [0001] The invention relates to the field of two-dimensional codes, in particular to a color circular two-dimensional code and a method for generating and decoding the same. Background technique [0002] In recent years, the application of QR codes has become more and more widespread, especially in the fields of mobile payment and online social networking. Due to its large information capacity and fast identification, it has been rapidly popularized in people's daily life. Although two-dimensional codes have been promoted on a large scale, in many scenarios, existing two-dimensional codes still have certain limitations, the most prominent being the insufficient ability of two-dimensional codes to resist image distortion. In fact, the correct recognition of the matrix-type two-dimensional code represented by QR Code is based on one foundation: the two-dimensional code is printed on a flat surface. If the plane where the QR code is located is raised or depres...

AI Technical Summary

Problems solved by technology

However, the two-dimensional code uses a circle as the data unit, and the data density is very low. At the same time, the data is encoded by different gray values, which requires high precision for the two-dimensional code reading equipment, so the practical application of the two-dimensional code is limited.

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