Fuzzy recognizable two-dimensional code and generation and recognition method thereof

A two-dimensional code and fuzzy technology, applied in the field of two-dimensional code generation, can solve the problems of fuzzy and recognizable two-dimensional code generation, identification method, large amount of calculation, and inability to accurately identify two-dimensional codes

Active Publication Date: 2021-05-18
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the existing two-dimensional code recognition method, the present invention cannot accurately recognize two-dimensional codes in s

Method used

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  • Fuzzy recognizable two-dimensional code and generation and recognition method thereof
  • Fuzzy recognizable two-dimensional code and generation and recognition method thereof
  • Fuzzy recognizable two-dimensional code and generation and recognition method thereof

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Experimental program
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Embodiment 1

[0029] In order to solve the problems of large amount of calculation and poor effect of the existing methods for recognizing two-dimensional codes from fuzzy images, a fuzzy recognizable two-dimensional code based on fuzzy invariant features and fuzzy invariant shapes is proposed. Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0030] like figure 1 Shown is a schematic diagram of the composition of the fuzzy recognizable two-dimensional code proposed by the present invention.

[0031] S101 is two dark concentric rings. The inner radius of the big ring is R, the outer radius is 1.1R, and the thickness is 0.1R. The inner and outer radii of the small ring are 0.5R and 0.6R respectively.

[0032] S102 is four dark solid discs with a radius of 0.1R, the centers of which are points O, A, B, C and D respectively, where point O is also the center of two concentric rings, points A, B, C and D is located ...

Embodiment 2

[0040] More specifically, such as image 3 Shown is the fuzzy recognizable two-dimensional code generation process of the present invention. In step S301, the generation process starts. In the process of S302, the user inputs the stored binary data, and the binary data may be the user's original data, or the original data plus error correction coded data. In step S303, an appropriate version number is selected according to the length of the input binary data. In step S304, according to the two-dimensional code parameters corresponding to the version number, such as the parameters shown in Table 1, a corresponding positioning pattern is generated. In step S305, according to the version number and the corresponding two-dimensional code parameters, the two data areas are divided into a specific number of data bands, and the data bands are further evenly divided into fan rings, and each bit in the input binary data is sequentially converted is the brightness and shade of the co...

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Abstract

The invention provides a fuzzy recognizable two-dimensional code. The fuzzy recognizable two-dimensional code comprises a positioning pattern, format information and data. The positioning pattern is composed of fuzzy invariant shapes; the format information is stored in fuzzy invariant features of a positioning pattern composed of fuzzy invariant shapes; a data tape is arranged between the positioning patterns, and the data is stored on the data tape. The invention further provides a generation and recognition method of the fuzzy recognizable two-dimensional code, the generated fuzzy recognizable two-dimensional code can be directly recognized in the fuzzy image, preprocessing operation such as deblurring is not needed, the recognition process is simplified, the recognition speed in the fuzzy image is increased, and in the fuzzy image, the two-dimensional code can be quickly positioned by using the characteristic that the fuzzy invariant graph can be quickly identified; meanwhile, the storage of the format information uses fuzzy invariant features, and the fuzzy invariant features cannot damage the features, so that the two-dimensional code can still be correctly identified even in a seriously fuzzy image.

Description

technical field [0001] The present invention relates to the technical field of two-dimensional code generation, and more specifically, to a fuzzy and identifiable two-dimensional code and a method for generating and identifying the two-dimensional code. Background technique [0002] With the development of Internet of Things technology, as an important graphic identification technology, two-dimensional code technology is widely used to identify items in the perception layer of the Internet of Things, such as commodity traceability, smart logistics, etc. However, with the popularity of IoT applications in more and more scenarios, the requirements for identification technology are also getting higher and higher. When the marked item is moving or the position is not fixed, the camera often cannot obtain a clear QR code image. The traditional method is to deblur the captured image first, and then decode the QR code. However, deblurring is an ill-conditioned problem, which is n...

Claims

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Application Information

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IPC IPC(8): G06K19/06G06K7/14
CPCG06K19/06037G06K19/06168G06K7/1443G06K7/1421
Inventor 谢舜道谭洪舟
Owner SUN YAT SEN UNIV
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