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Image reconstruction method and system for distorted color direct component marking

A component marking and image reconstruction technology, applied in image analysis, graphics and image conversion, image data processing, etc., can solve problems such as distortion, uneven color of marking modules, uneven marking depth and texture size, etc., and achieve fast and accurate positioning , Improve readability, improve the effect of module color changes

Active Publication Date: 2021-03-02
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the actual laser processing process, there are also some challenging problems, such as the phenomenon of uneven color in the marking module, and the different marking depth and texture of different marking modules in the same barcode.
At the same time, when the machine vision system is used to collect marking images, affected by the reflective properties of metals, the collected barcode images are prone to uneven illumination and distortion, which bring difficulties to the successful recognition of color direct part marks

Method used

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  • Image reconstruction method and system for distorted color direct component marking
  • Image reconstruction method and system for distorted color direct component marking
  • Image reconstruction method and system for distorted color direct component marking

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Experimental program
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Embodiment 1

[0062] This embodiment discloses an image reconstruction method for distorted color direct component marking, figure 1 It is a flowchart of image reconstruction technology for distorted color direct part marking according to an embodiment of the present disclosure.

[0063] The specific content is as follows:

[0064] S1: if figure 2 As shown, load the collected laser-marked color Data Matrix barcode image, and perform the following preprocessing steps in sequence: the apex of the L solid edge of the barcode is located in the lower left corner of the image, use the weighted average method to grayscale the image, and use the Sauvola algorithm Binarize the grayscale image, use the Canny operator to detect the boundary of the binarized image, and use the Hough transform to detect the straight line in the image;

[0065] S2: Detect the four vertices of the color Data Matrix barcode, the steps are as follows:

[0066] Such as image 3 As shown, ρ is the vertical vector from th...

Embodiment 2

[0086] The purpose of this embodiment is to provide a computing device, including a memory, a processor, and a computer program stored in the memory and operable on the processor. step.

Embodiment 3

[0088] The purpose of this embodiment is to provide a computer-readable storage medium.

[0089] A computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the specific steps in the first embodiment above are executed.

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Abstract

The invention provides an image reconstruction method for distorted color direct component marking, and the method comprises the steps: loading a collected color bar code image, and carrying out the preprocessing of the image; determining four vertexes of the laser marked color bar code based on the structural features of the bar code, and extracting the color bar code after distortion correction;clustering the two channels of the color bar code image according to colors, and calculating the mean value of the last channel value of each clustering area to serve as the last channel value of each clustering center, thereby recognizing the processing color of the bar code; reconstructing the color bar code; performing error correction on the edge finding area of the reconstructed bar code according to the structural features of the bar code, and completing color bar code reconstruction after error correction. According to the invention, the problems of bar code deformity caused by an image acquisition system and module color change and different sizes caused by laser marking are solved, and the readability of color direct component marking is greatly improved.

Description

technical field [0001] The disclosure belongs to the technical field of direct component marking, and in particular relates to an image reconstruction method and system for distorted color direct component marking. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] Direct part marking technology is a product information identification technology that directly marks machine-readable symbols (such as DataMatrix barcodes) on the surface of industrial product parts. Compared with traditional printed labels, direct part marking is a permanent mark, has high durability, and is more adaptable to complex and changeable industrial production environments. It is an effective method to promote industrial product parts to achieve product life cycle tracking. The main methods to achieve direct component marking technology include laser marking, mechanic...

Claims

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Application Information

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IPC IPC(8): G06K7/14G06K9/62G06T3/00G06T7/11G06T7/13G06T11/40
CPCG06K7/1473G06T7/11G06T7/13G06T11/40G06F18/23G06T3/02
Inventor 李建美耿影廖利城刘福康
Owner SHANDONG UNIV
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