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Two-dimensional code recognition and generation method, device, two-dimensional code and cart

An identification method and identification device technology, applied in the field of two-dimensional codes, can solve problems such as large amount of calculation, and achieve the effect of reducing the amount of identification and calculation.

Active Publication Date: 2021-07-09
SHANGHAI QUICKTRON AUTOMATION TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The existing technology is more dependent on the recognition of image processing technology, and the amount of calculation is very large

Method used

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  • Two-dimensional code recognition and generation method, device, two-dimensional code and cart
  • Two-dimensional code recognition and generation method, device, two-dimensional code and cart
  • Two-dimensional code recognition and generation method, device, two-dimensional code and cart

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Experimental program
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Effect test

Embodiment approach

[0151] According to an implementation manner, the several preset points can be obtained as follows.

[0152] For example, see Figure 5 , scan the two-dimensional code horizontally, for example, scan once every 5 rows, and the scanning interval of each row is 3 columns, and determine the coordinate points on the circle according to the gray value difference of adjacent pixels; and scan from left to right Perform the following steps in the process:

[0153] (1) Determine the edge point where white becomes black, for example Figure 5 Point A shown in:

[0154] If the difference between the gray value of the adjacent pixel on the right minus the gray value of the adjacent pixel on the left is less than the first gray value difference, for example, the first gray value difference is -30, then the white becomes black. edge point.

[0155] (2) Determine the edge point where black becomes white, for example Figure 5 Point B shown in:

[0156] If the difference between the gra...

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Abstract

The present invention proposes a method, device, two-dimensional code and trolley for identifying and generating a two-dimensional code. The two-dimensional code includes a center positioning graphic and a rotation angle positioning graphic. The identification method includes: the identification method includes: determining the center positioning graphics; determine the center position of the two-dimensional code according to the center positioning figure; determine the position of the rotation angle positioning figure according to the center position of the two-dimensional code; determine the position of the rotation angle positioning figure according to the position of the rotation angle positioning figure The rotation angle of the two-dimensional code. The invention is beneficial to reduce the amount of calculation when identifying two-dimensional codes.

Description

technical field [0001] The invention relates to the technical field of two-dimensional codes, in particular to a method and device for identifying and generating two-dimensional codes, two-dimensional codes and a trolley. Background technique [0002] The existing two-dimensional code recognition technology obtains the two-dimensional code image by means of scanning and shooting to read the coded information carried in the coding area of ​​the two-dimensional code. However, when shooting or scanning, the obtained two-dimensional code image usually has an angular offset, for example, the captured two-dimensional code image may be upside down, and the coding area is also upside down. The coded information read based on the coded area of ​​the current angle is wrong. Therefore, it is necessary to determine at least three positioning blocks on the top of the two-dimensional code through image processing, and then determine the rotation angle according to these positioning block...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K7/14
CPCG06K7/1417G06K7/1443G06K7/1456
Inventor 杨树森周韬宇孙宇
Owner SHANGHAI QUICKTRON AUTOMATION TECH CO LTD
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