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Method for measuring geometric dimension of refractory brick

A technology of geometric dimensions and measurement methods, applied in the direction of measuring devices, image data processing, instruments, etc., can solve problems such as low accuracy of measurement results, impact on steel production, economic losses of factories, etc., to improve method efficiency, good positioning, saved effect

Inactive Publication Date: 2018-10-16
SHANDONG IND TECH RES INST OF ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the production line of refractory bricks, before the products are off-line and packed, they have been manually measured with a tape measure for a long time. The accuracy of the measurement results is not high, and misjudgments are prone to occur. Bring serious economic losses, and even seriously affect the production of steel

Method used

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  • Method for measuring geometric dimension of refractory brick
  • Method for measuring geometric dimension of refractory brick
  • Method for measuring geometric dimension of refractory brick

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Such as Figure 1-5 Shown, a kind of refractory brick geometric dimension measuring method comprises the following steps:

[0053] Step 1: Filter and denoise the original refractory brick color image to obtain the denoised image;

[0054] Step 2: Segment the refractory brick area in the denoised image to obtain the refractory brick image;

[0055] Step 3: Carry out morphological processing on the refractory brick image, make the edge of the refractory brick image transition smoothly, and remove the isolated point noise at the edge of the refractory brick image, and obtain the corrected refractory brick image;

[0056] Step 4: Use the Canny operator to perform edge detection on the corrected refractory brick image;

[0057] Step 5: use the Hough transform method and the K-means method to extract the straight line of the refractory brick shape to form the outer contour of the refractory brick, including the following steps:

[0058] Step 5-1: Consider a point (x, y) on...

Embodiment 2

[0089] In this embodiment, the refractory brick surface scratch recognition is carried out on the basis of threshold segmentation of the refractory brick image, and the acquisition of the refractory brick image, filtering and noise reduction processing and segmentation of the refractory brick area are the same as in embodiment 1.

[0090] A method for identifying scratches on the surface of refractory bricks based on frequency domain filtering enhancement, including the following steps:

[0091] Step 1: Filter and denoise the original refractory brick color image collected by the sensor to obtain a denoised image; in the denoised image, segment the refractory brick area to obtain a grayscale image of the refractory brick;

[0092] Step 2: convert the grayscale image of refractory bricks into a color image of refractory bricks, conduct channel decomposition on the color image of refractory bricks, separate the images of R, G, and B channels, and obtain the defect channel image, ...

Embodiment 3

[0128] In this embodiment, the depth defect recognition of refractory bricks is carried out on the basis of threshold segmentation of refractory brick images, and the acquisition of refractory brick images, filtering and noise reduction processing and segmentation of refractory brick regions are the same as in embodiment 1.

[0129] The identification method of depth defect of refractory brick based on height histogram segmentation comprises the following steps:

[0130] Step 1. Filter and denoise the original color image of refractory bricks collected by the sensor to obtain the denoised image; in the denoised image, segment the refractory brick area to obtain the grayscale image of the refractory brick, such as figure 1 shown;

[0131] Step 2. Use the least squares method to perform plane fitting on the point cloud of the refractory brick image to obtain the zero plane, and obtain the size parameters (height and width) of the original refractory brick image, and generate a c...

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Abstract

The invention discloses a method for measuring the geometric dimension of a refractory brick. The method includes the steps of carrying out filtering and noise reduction on an original refractory brick color image to obtain a noise-reduced image; seperating a refractory brick region from the noise-reduced image to obtain a refractory brick image; carrying out morphological processing on the refractory brick image, so that the edges of the refractory brick image are in smooth transition, and removing the isolated point noise at the edges of the refractory brick image to obtain a corrected refractory brick image; using a Canny operator for carrying out edge detection on the corrected refractory brick image; extracting the contour linear line of the refractory brick by using a Hough transformation method and a K-means method, and forming the outer contour of the refractory brick. The method for measuring the geometric dimension of a refractory brick improves efficiency and precision.

Description

technical field [0001] The invention relates to a method for measuring the geometric dimensions of refractory bricks. Background technique [0002] Refractory brick is a shaped refractory material fired with refractory clay or other refractory raw materials. It is mainly used for building smelting furnaces or ladles, and can withstand high temperatures of 1580°C-1770°C. On the production line of refractory bricks, before the products are off-line and packed, they have been manually measured with a tape measure for a long time. The accuracy of the measurement results is not high, and misjudgments are prone to occur. Bring serious economic losses, and even seriously affect the production of steel. Contents of the invention [0003] The purpose of the present invention is to provide a method for measuring the geometric dimension of refractory bricks with improved efficiency and accuracy. [0004] The technical scheme that the present invention solves its technical problem a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/00G01B11/26G06T7/00G06T7/12G06T7/136G06T7/62
CPCG01B11/00G01B11/26G06T7/0004G06T7/12G06T7/136G06T7/62G06T2207/10004G06T2207/30132
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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