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Method and device for identifying motion bar code

A barcode and motion technology, applied in the field of image processing, which can solve the problems of decoding failure, narrowing of blank areas, and inability to accurately identify barcodes.

Pending Publication Date: 2021-04-20
苏州摩比信通智能系统有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Currently, when identifying a barcode, it is necessary to align the scanning end of the code scanning machine with the barcode area and keep it still. If the scanning end or the barcode area shakes, the width of the black barcode area in the recognized barcode image will become wider. The blank area between the corresponding black barcode areas will become narrower, resulting in the failure of decoding during the barcode identification process, and the barcode cannot be accurately identified, reducing the efficiency of identification

Method used

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  • Method and device for identifying motion bar code
  • Method and device for identifying motion bar code

Examples

Experimental program
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Effect test

Embodiment 1

[0051] Embodiment 1 of the present invention provides a method for identifying a moving barcode, the barcode is located on an item, and the item moves along with the conveyor belt, such as figure 1 As shown, the method includes:

[0052] S101. Obtain a barcode picture of a moving barcode, where the barcode picture is obtained by scanning the moving barcode by a scanning device above the conveyor belt.

[0053] S102. Obtain the ratio between the actual size of the barcode and the image size of the barcode picture.

[0054] S103. Obtain the actual movement displacement of the barcode along with the movement of the conveyor belt within the exposure time of scanning the code.

[0055]S104. Based on the ratio and the actual displacement, obtain the displacement of the image on the barcode picture, where the displacement of the image is the amount of deformation formed on the image on the picture of the barcode when the moving barcode is scanned.

[0056] S105. Correct the barcode...

Embodiment 2

[0086] Based on the same inventive concept, the embodiment of the present invention also provides a device for identifying a moving barcode, such as Figure 5 shown, including:

[0087] The first acquiring module 501 is configured to acquire a barcode picture of the moving barcode, the barcode picture is obtained by scanning the moving barcode by the scanning device above the conveyor belt;

[0088] The first obtaining module 502 is used to obtain the ratio between the actual size of the barcode and the image size of the barcode picture;

[0089] The second acquiring module 503 is configured to acquire the actual displacement of the barcode moving along with the conveyor belt within the scanning exposure time;

[0090] The second obtaining module 504 is configured to obtain the image movement displacement on the barcode picture based on the ratio and the actual movement displacement, and the image movement displacement is the movement displacement on the barcode picture when ...

Embodiment 3

[0103] Based on the same inventive concept, the embodiment of the present invention also provides a system for identifying motion barcodes, such as Image 6 As shown, it includes: a conveyor belt 601, used to transmit items with barcodes; a code scanning device 602, located above the conveyor belt, used to scan codes for items with barcodes in transmission; the identification movement barcode described in the second embodiment The device is used to identify the barcode scanned by the scanning device.

[0104] Wherein, the preset height between the code scanning device 602 and the conveyor belt 601 remains unchanged. So that during the scanning process, the ratio b will not change.

[0105]The transmission speed of the conveyor belt 601 is maintained at a constant speed. Furthermore, when obtaining the actual displacement of the barcode moving with the conveyor belt within the code scanning exposure time, it can be obtained quickly based on the uniform transmission speed.

...

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PUM

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Abstract

The invention relates to the technical field of image processing, in particular to a method, device and system for recognizing a moving bar code, the bar code is located on an object, the object moves along with a conveying belt, and the method comprises the steps of: obtaining a bar code picture of the moving bar code, wherein the bar code picture is obtained by scanning a moving bar code by a scanning device above the conveyor belt, and the ratio of the actual size of the bar code to the image size of the bar code picture is obtained; acquiring the actual movement displacement of the bar code along with the movement of the conveyor belt within the scanning exposure time; based on the ratio and the actual movement displacement, obtaining image movement displacement on the bar code picture, wherein the image movement displacement is deformation formed by an image on the bar code picture when the moving bar code is scanned; and correcting the bar code picture on the basis of the image movement displacement, so that the deformed bar code picture is restored to the original undeformed bar code picture, quick decoding can be realized, and the efficiency of code scanning recognition is improved.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method and device for identifying a moving barcode. Background technique [0002] Currently, when identifying a barcode, it is necessary to align the scanning end of the code scanning machine with the barcode area and keep it still. If the scanning end or the barcode area shakes, the width of the black barcode area in the recognized barcode image will become wider. However, the blank area between the corresponding black barcode areas will become narrower, thus resulting in decoding failure in the barcode identification process, and the barcode cannot be accurately identified, reducing the identification efficiency. Contents of the invention [0003] In view of the above problems, the present invention is proposed to provide a method, device and system for identifying moving barcodes that overcome the above problems or at least partially solve the above problems. [...

Claims

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Application Information

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IPC IPC(8): G06K7/10G06K7/14
Inventor 王凯华史明星
Owner 苏州摩比信通智能系统有限公司