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Layered-structure 2D code encoding and decoding method

A technology of layered structure and coding method, applied in the field of two-dimensional code, can solve the problem of inability to distinguish images, achieve the effect of fast and convenient identification and reading, increase identification reliability and security, and avoid unscannable effects.

Active Publication Date: 2016-10-12
HANGZHOU BOOGOOB TECH CO LTD
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Problems solved by technology

When the QR code itself is contaminated, some images may not be able to be identified

Method used

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  • Layered-structure 2D code encoding and decoding method
  • Layered-structure 2D code encoding and decoding method
  • Layered-structure 2D code encoding and decoding method

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specific Embodiment approach

[0025] like figure 1 As shown, a coding method of a layered two-dimensional code comprises the following steps:

[0026] S1, determine whether the source data information flow meets the ECC200 table rules;

[0027] The specific judgment method is: convert the source data information flow into binary codes, the binary codes get the number of binary codes through the convolutional code encoder, and the number of binary codes is the same as the number of binary codes preset in the ECC200 table rules For comparison, for example, two source data streams are input, and the source data streams are converted into eight-bit binary codes to obtain 16 binary codes. The convolutional code encoder will add 8 after obtaining 16 binary code information sequences according to requirements. "0", then the binary code obtains a total of 24 binary codes, and each binary code obtains the number of binary codes through the convolutional code encoder, that is, each binary code outputs two binary co...

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Abstract

The invention discloses a layered-structure 2D code encoding method comprising the following steps of: S1, determining whether a source data information flow satisfies an ECC200 table rule; S2, acquiring data codes; S3, acquiring final codes; and S4, acquiring a 2D picture that can be identified. The invention further discloses a layered-structure 2D code decoding method comprises the following steps that: S5, a scanner for scanning the 2D codes scans the 2D codes to obtain 2D code information; and a decoder decodes the acquired 2D code information so as to obtain the source data information flow. The encoding method may prevent a case that a polluted, worn, or wrinkled 2D code cannot be scanned, enables the polluted, worn, or wrinkled 2D code to be identified and read, and increases reliability and security. Further, the decoding method is low in calculating complexity and high in error correction restoration efficiency, and greatly increases decoding efficiency.

Description

technical field [0001] The invention relates to the field of two-dimensional codes, and more precisely relates to a coding and decoding method for two-dimensional codes with a layered structure. Background technique [0002] Two-dimensional bar code / two-dimensional bar code (2-dimensional bar code) records data symbol information with a specific geometric figure distributed on a plane (two-dimensional direction) according to certain rules. Make full use of the concept of "0" and "1" bit streams that form the basis of the internal logic of the computer. The black pattern corresponds to the logical "1" bit, and the white pattern corresponds to the logical "0" bit. Express information, so such a two-dimensional code has the ability to store a large amount of information in a small area, and has a certain verification function itself. When the existing two-dimensional barcode is polluted on a large scale or is worn or wrinkled to make it not clear enough, the scanning device (m...

Claims

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Application Information

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IPC IPC(8): G06K19/06G06K7/14
Inventor 楼喜中陈善梁宣雷
Owner HANGZHOU BOOGOOB TECH CO LTD
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