Encoding method of QR code

Abstract

The invention discloses a two-dimensional code encoding method. By designing a basic recognition point, the size is composed of 3X3 pixel points, and all code shapes are composed of basic recognition points, and the combination of all codes is generated by using the distance changes between the basic recognition points. Design a graphic-coded shape consisting of 25 basic identification points. Sets the displacement characteristics of the basic recognition points. The coding sequence is composed of the displacement changes of the basic recognition points. The encoding of this scheme is highly invisible, and the invisible printing basically does not affect the aesthetics of the publication; the encoding method is simple, and the printing accuracy is not high; the decoding is simple, and generally an 8-bit single-chip microcomputer can trust the decoding operation; the code word redundancy is large , allowing large printing errors and reducing the probability of errors.

Description

technical field [0001] The invention relates to the field of graphic coding, in particular to a mathematical invisible two-dimensional coding, a decoding method, and an application of printed matter. Background technique [0002] People's current reading habit is to read books directly with their eyes. This way of obtaining information is relatively boring, especially it cannot meet the requirements of young children for obtaining information. way of expressing information), and cannot meet the needs of people with disabilities, such as visually impaired people. As a result, audio reading methods and graphic reading methods gradually appeared. [0003] The audiobooks currently seen are basically printed in clear codes, such as barcodes. This kind of coding is very unfavorable to the overall typesetting and aesthetic requirements of the reading material, and it cannot be hidden in the graphics. Since it is a clear code, it cannot meet the confidentiality requirements. [...

AI Technical Summary

Problems solved by technology

This kind of coding is very unfavorable to the overall typesetting and aesthetic requirements of the reading material, and it cannot be hidden in the graphics

Since it is a clear code, it cannot meet the confidentiality requirements

[0004] The invisible two-dimensional coding that can be seen at present has an immature coding method, which leads to high requirements for printing accuracy, high bit error rate, complicated decoding, and high requirements for optical precision.

Cannot be commercialized

[0005] The invisible QR codes that can be seen at present are not really invisible, which greatly affects the aesthetics of printed items

[0006] The invisible two-dimensional codes that can be seen at present, due to the immature coding, lead to complicated decoding, and the performance requirements of microcomputers are too high, which is not conducive to market promotion

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