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Laser two-dimension code identification method based on image restoration

A laser two-dimensional code and recognition method technology, applied in character and pattern recognition, electromagnetic radiation induction, instruments, etc., can solve problems such as difficulty in extracting two-dimensional code data, defects, and unclear laser two-dimensional code images, etc. To achieve the effect suitable for promotion and application

Active Publication Date: 2015-05-20
东莞市万酷电子科技有限公司
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Problems solved by technology

The technical problem it solves is that due to the chemical reaction during marking and the light and oil pollution during collection, the laser two-dimensional code image on the metal part is often unclear or defective, which makes it difficult for the existing identification methods to extract the correct image. QR code data of

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  • Laser two-dimension code identification method based on image restoration
  • Laser two-dimension code identification method based on image restoration
  • Laser two-dimension code identification method based on image restoration

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, but not used to limit the present invention.

[0029] Such as Figure 1-Figure 4 As shown, the laser two-dimensional code recognition method based on image restoration of the present invention specifically takes the following steps:

[0030] 1) Preprocess the collected laser QR code images of metal parts, that is, perform grayscale processing on the image, invert the output image, median filter denoising processing, and binarize the image to obtain a binary image B . In this example, the OSTU algorithm is selected for binarization. In this embodiment, figure 2 Is the original image of the laser QR code of the metal part in the embodiment, image 3 Is the laser two-dimensional code image B of the metal part after binarization in the embodiment;

[0031] 2) Perform morphol...

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Abstract

The invention discloses a laser two-dimension code identification method based on image restoration and belongs to the technical field of image processing. The laser two-dimension code identification method includes steps of preprocessing acquired metal part laser two-dimension code images, acquiring outer contour of two-dimension codes by means of image morphology, detecting outer edges of the two-dimension codes by Soble operator, roughly and accurately positioning the two-dimension codes, partitioning the two-dimension code images, restoring and identifying and the like. By the laser two-dimension code identification method, the more satisfying two-dimension code images can be redrawn, the two-dimension code images can be restored and identified, the problem that an existing identifying method is hard to extract correct two-dimension code data due to the fact that laser two-dimension code images on metal pieces are always fuzzy or defective because of chemical reaction of many metal products during marking and illumination and oil contamination and the like during acquisition is solved, and the method is applicable to popularization and application.

Description

Technical field [0001] The invention belongs to the technical field of image processing, and particularly relates to a laser two-dimensional code recognition method based on image restoration for metal part identification. Background technique [0002] Direct part marking means a printing technology that can directly mark products without going through intermediate carriers such as labels. In all current domestic and foreign manufacturing industries, users can make permanent marks for components, mechanical parts, spare parts, or printed circuit boards so that they can be read mechanically, that is, they can be processed from the data technology. At present, the methods that can directly mark metal parts include laser marking technology, inkjet coding technology, and pneumatic marking technology. For inkjet coding technology, it uses the principle of charged ink particles, deflected by a high-voltage electric field, to print patterns, characters and numbers on the surface of var...

Claims

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Application Information

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IPC IPC(8): G06K7/10G06K9/36
Inventor 高飞令狐乾锦高炎丰敏强李定谢尔张元鸣卢书芳肖刚
Owner 东莞市万酷电子科技有限公司
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