Coding method, coded graph, coded graph reading method and shooting device

Abstract

The invention discloses a coding method, a coded graph, a coded graph reading method and a shooting device. According to the method disclosed in the invention, three of the four positioning blocks inthe coded graph are respectively positioned at three corners of the coded graph, the other positioning block is only tangent to the edge of the coded graph, and therefore an asymmetric distribution configuration of the four positioning blocks is formed. According to the method, the existing two-dimensional code standard is replaced, the authorization cost and the manufacturing cost required by theexisting two-dimensional code generation software are saved, the method is not limited by the use of the existing two-dimensional code generation software, the coded graph can be accurately and quickly positioned, and the position of the initial coded block in the coding area can be quickly found. According to the method disclosed in the invention, the size of the coding graph area and the size of the coding area can be set according to the data size of the application scene, and therefore the data information recorded by the coding graph can be flexibly set. The coding mode of the coding area is simple, and the efficiency of a scene with a small coded data size is high.

Description

technical field [0001] The invention relates to the technical field of calibration, in particular to an encoding method, an encoding pattern, a method for reading the encoding pattern and a photographing device. Background technique [0002] In industrial production and machine vision applications, in order to determine the information (such as coordinates) of some key positions in the workpiece, mechanism or scene, it is necessary to label specific positions. During processing, by looking for the label position in the image and analyzing the content of the label, the relevant information of the position of the point indicated by the label can be determined, which is beneficial to reduce the difficulty of subsequent processing. By processing the information contained in the label, it is beneficial to the organization, and the software algorithm can automatically and efficiently complete specific functions. This method of using tags is widely used in scenarios such as mobile...

AI Technical Summary

Problems solved by technology

The disadvantages of this code are: firstly, in order to maximize the distance of the allowed codewords, it needs to be screened from a large number of codewords, which takes a long time and is inconvenient to expand; secondly, the decoding process uses template matching for decoding, The time consumption increases linearly with the number of templates, and it is difficult to cover all complex situations with templates

[0007] The existing two-dimensional code needs to use the two-dimensional code generation software under the existing rules, which increases the authorization cost and production cost of the two-dimensional code

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