A method of rapid location recognition based on two-dimensional code decoding
A technology of positioning identification and two-dimensional code, applied in the field of two-dimensional code identification, can solve the problems of inability to send out immediately and items being held up, and achieve the effect of reducing the amount of calculation, improving work efficiency, and reducing costs.
Active Publication Date: 2017-05-17
SHANGHAI QUICKTRON INTELLIGENT TECH CO LTD
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[0006] In order to solve the problem that items are stuck in the customs and cannot be issued immediately, the present invention provides a fast positioning and identification method based on two-dimensional code decoding for its storage system. The technical solution is as follows:
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[0058] In order to make the measures, creative features, goals and effects achieved by the technology of the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.
[0059] figure 1 It is a flow chart of a method for fast location recognition based on two-dimensional code decoding.
[0060] Such as figure 1 As shown, a method for fast location recognition based on two-dimensional code decoding includes the following steps:
[0061] Step 1: Perform median filter processing on the entire image obtained by the industrial camera to reduce the influence of interference noise;
[0062] Step 2: Scan the image horizontally and vertically to determine whether there is a QR code in the current image. If yes, obtain the area coordinates of the QR code in the image, and perform step 3. If not, end this operation. The specific operation steps are:
[0063] figure 2 It is a schematic diagram of searching ...
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The invention belongs to the technical field of two-dimensional code identification, and provides a rapid positioning and identifying method based on two-dimensional code decoding. The method comprises the following steps: performing median filter processing on an entire image; scanning the image, judging whether or not a two-dimensional code exists in the image, and if so, acquiring a two-dimensional code regional coordinate; intercepting a two-dimensional code image; performing adaptive binarization processing; performing connected area disposal on black pixel points; screening four boundaries; converting the coordinate system of the image into the coordinate system of the two-dimensional code; projecting the two-dimensional code under a new coordinate system to obtain the directivity, real boundary length and coordinate of the two-dimensional code and the barycentric coordinates of black-white blocks; judging the gray values of the black-white blocks to obtain a two-dimensional code information matrix; and acquiring decoding information. The method can adapt to various working conditions, and has the advantages of high contrast, high interference resistance and low investment cost. Automatic positioning and identifying functions can be finished by only one set of industrial camera and light source; high working efficiency is achieved; and the production requirement of an assembly line is met to the maximum extent.
Description
technical field [0001] The invention belongs to the technical field of two-dimensional code identification, and in particular relates to a method for fast positioning and identification based on two-dimensional code decoding. Background technique [0002] In today's society, two-dimensional code technology is becoming increasingly mature and widely used in all walks of life. Therefore, automation solutions for manufacturing production management systems and warehouse management systems will face more and more problems related to the automatic positioning and recognition of QR codes. [0003] At present, most manufacturing production lines still use the traditional manual method to scan product QR codes. However, each link must check whether there are defective products, and send the defective product information to the production management system by scanning the QR code. , if the process of inspecting defective products is completed manually, a large amount of labor costs ...
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IPC IPC(8): G06K7/10
Inventor 段强元倪菲
Owner SHANGHAI QUICKTRON INTELLIGENT TECH CO LTD