Graph-Based Coding Methods

Abstract

The invention discloses a coding method based on a graph. Information is stored in a coding graph composed of lines in a coding mode. Codes can be hidden in the graph. Practical value is achieved, and feasibility is achieved along with improvement of camera device resolution ratio. The technical scheme is that the coding method comprises that mapping relationship between the features of graph units composed of a plurality of lines and a 0 state and a 1 state is established; feature units form the coding graph in stacking, arraying and connecting modes and the like according to a certain rule, coding meaning of the coding graph is determined according to the features of the graph units and arraying of the graph units; the coding graph is overlapped with another graph, a graph including coding information is formed, and the effect of combining of the graph and the codes is achieved.

Description

technical field [0001] The present invention relates to a coding method, in particular to a method for storing information by using a graph composed of several lines, which can be superimposed on an image to hide the coded graph in the superimposed image. Background technique [0002] Existing image coding methods such as one-dimensional barcodes and two-dimensional codes are composed of one or more lines of images filled with black or white in a rectangular space. The two colors represent 0 and 1. According to certain coding rules, the arrangement of units Combinations represent information of a certain meaning. [0003] The characteristic of this encoding method is that the encoding itself is an image, which is opaque, so it is impossible to integrate the image to be displayed with the encoding. [0004] The code is suitable for machine reading, but not suitable for human reading and understanding. In order to achieve the purpose of displaying the two-dimensional code and...

AI Technical Summary

Problems solved by technology

[0003] The characteristic of this encoding method is that the encoding itself is an image, which itself is opaque, so it is impossible to integrate the image to be displayed with the encoding.

[0004] The code is suitable for machine reading, but not suitable for human reading and understanding. In order to achieve the purpose of displaying the two-dimensional code and the image at the same time, the current method is to use the fault tolerance of the two-dimensional code to embed the image in the two-dimensional code. The images embedded in this method are very small, and generally can only be used to display graphics such as some simple icons, such as Figure 7 shown

In addition, a Japanese company named Content Idea of ​​ASIA has a patented technology called CL code, which displays the white part of the two-dimensional code in a transparent manner. There is a demonstration of this technology on its company website, but the two-dimensional code part occupies When a small part of the whole image is used, it will help the display effect to some extent, but if the QR code occupies a large part of the whole image, its transparent effect will not be good

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