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Refractory brick surface scratch identification method based on frequency domain filtering enhancement

A recognition method and refractory brick technology, applied in image enhancement, image data processing, instruments, etc., to achieve the effects of high speed, extended service life, and good execution efficiency

Inactive Publication Date: 2019-09-27
SHANDONG IND TECH RES INST OF ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no measurement system or method for automatic measurement of surface defects of refractory bricks

Method used

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  • Refractory brick surface scratch identification method based on frequency domain filtering enhancement
  • Refractory brick surface scratch identification method based on frequency domain filtering enhancement
  • Refractory brick surface scratch identification method based on frequency domain filtering enhancement

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Embodiment Construction

[0046] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0047] Such as figure 1 As shown, the scratches on the surface of refractory bricks are relatively shallow, but in the process of smelting steel, the penetration corrosion phenomenon will become more and more serious with the passage of time, which will eventually affect the service life of refractory bricks. Smelting brings quality and benefit impact. Therefore, the surface scratch detection of refractory bricks is particularly important.

[0048] A method for identifying scratches on the surface of refractory bricks based on frequency domain filtering enhancement, including:

[0049] Step 1: collect the original image of the refractory brick, the original image is a color image, perform channel separation on the original color image of the refractory brick, and obtain the G channel image;

[0050] Step 2: Process the G channel image from t...

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Abstract

The invention discloses a refractory brick surface scratch identification method based on frequency domain filtering enhancement. The method comprises the steps of collecting an original image of a refractory brick; converting the gray level image of the refractory brick into a refractory brick color image, carrying out channel separation on the original color image of the refractory brick, and obtaining a G channel image; performing two-dimensional discrete Fourier transform and frequency domain filtering smoothing on the G channel image to obtain a refractory brick time-frequency domain image; and performing threshold processing and morphological processing on the refractory brick time-frequency domain image to obtain a refractory brick threshold image after frequency filtering, and marking all communicated regions in the refractory brick threshold image by adopting a twice scanning method on the refractory brick threshold image. The invention provides an identification method for effectively identifying scratches on the surfaces of refractory bricks.

Description

technical field [0001] The invention relates to a method for identifying scratches on the surface of refractory bricks based on frequency domain filter enhancement. Background technique [0002] Refractory bricks, according to international standards, refer to non-metallic materials and products that have stable chemical and physical properties and can be used normally in high temperature environments (not excluding a certain proportion of metals). Refractory bricks can withstand various mechanical actions and physical and chemical changes at high temperatures, and are widely used in metallurgy, chemical industry, petroleum, power generation and other industrial fields. In recent years, my country's refractory brick production enterprises have developed rapidly, and the market competition for refractory bricks has become increasingly fierce. Many enterprises have improved production technology and quality inspection technology, and realized production and testing automation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T7/13G06T7/136G06T7/155G06T7/90G06T5/00
CPCG06T5/002G06T7/0004G06T2207/30132G06T7/13G06T7/136G06T7/155G06T7/90
Inventor 曹衍龙张远松杨将新王敬孙安顺董献瑞
Owner SHANDONG IND TECH RES INST OF ZHEJIANG UNIV
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