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Method and device for detecting ceramic tile defects based on machine vision

A defect detection and machine vision technology, used in measuring devices, ceramic material production, optical testing flaws/defects, etc., can solve the problems of missing four corners of ceramic tiles, high missed detection rate, high labor intensity, etc., to achieve classification Good effect, improve pass rate, improve production efficiency

Active Publication Date: 2019-10-01
CHINA THREE GORGES UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 5) The missing corner refers to the situation where the four corners of the ceramic tile are missing
However, manual detection is labor-intensive, with high missed detection rate, slow detection speed, and detection results are easily affected by subjective factors.
In addition, the ceramic industry generally has the problem of difficult and expensive recruitment

Method used

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  • Method and device for detecting ceramic tile defects based on machine vision
  • Method and device for detecting ceramic tile defects based on machine vision
  • Method and device for detecting ceramic tile defects based on machine vision

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Embodiment Construction

[0095] Preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention, and are not intended to limit the protection scope of the present invention.

[0096] Figure 1(a)-Figure 1(f) It is the top view image of the ceramic tile in the embodiment of the present invention, and the example image of typical defects and waste products; wherein, Fig. 1 (a) is a normal ceramic tile; Fig. 1 (b) is a waste product containing cracks; Fig. 1 (c) is a waste product containing cracks; Bulky waste product; Figure 1(d) is a waste product with lack of glaze; Figure 1(e) is a waste product with color difference; Figure 1(f) is a waste product with missing corners.

[0097] It is worth pointing out that although ceramic tiles of different colors have their own defect types and judgment standards, most of the...

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Abstract

The invention discloses a method and device for detecting ceramic tile defects based on machine vision, relates to the field of ceramic tile defect detection, and aims to improve the efficiency of ceramic tile defect detection. The method comprises the following steps of firstly, acquiring a front overlooking image of a ceramic tile; then, carrying out image segmentation on the image, and extracting the ceramic tile from the background of a conveyor belt; and then extracting characteristic parameters of the ceramic tile to be detected from the segmented image, and comparing the characteristicparameters with preset characteristic parameters to determine whether the ceramic tile to be detected has defects such as unfilled corners, cracks, bulges, chromatic aberration, glaze lack and the like, and further classifying the ceramic tile to be detected to distinguish waste products and qualified products. Compared with the traditional manual detection, the method and device for detecting ceramic tile defects based on machine vision can efficiently detect all the ceramic tiles one by one, greatly improves the production efficiency, and greatly improves the qualification rate of the ceramic tiles leaving the factory.

Description

technical field [0001] The invention relates to the field of ceramic defect detection, in particular to a method and device for detecting defects of ceramic tiles based on machine vision. Background technique [0002] Ceramic tile belongs to a kind of roof building material. It has a rectangular tile body. The front of the tile body has a longitudinal groove, and the tile body at the upper end of the groove is provided with a tile stopper, and the left and right sides of the tile body are respectively a left side and a right side. There is a rear paw boss at the lower end of the back of the tile body, and a protruding rear rib is provided on the raised part of the back of the tile body. This kind of ceramic tile has a reasonable structure, smooth drainage, and no water leakage. When installing, just put the ceramic tiles together, which has high convenience, tight fitting and firm connection. The tile body can be made of ceramic materials, with high flexural and compress...

Claims

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Application Information

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IPC IPC(8): G01N21/88G01N21/84
CPCG01N21/8806G01N21/8851G01N21/84G01N2021/8874G01N2021/8887G01N2021/845Y02P40/60
Inventor 曾曙光肖焱山郑胜李强张邵伟李小磊
Owner CHINA THREE GORGES UNIV
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