Height histogram segmentation-based method for identifying depth defect of refractory brick

Abstract

The invention discloses a height histogram segmentation-based method for identifying the depth defect of a refractory brick. The method comprises the steps of obtaining a segmented refractory brick grayscale image; performing plane fitting on the image point cloud of the refractory brick by using a least square method to obtain a zero plane, obtaining the size parameter of the original image of the refractory brick, and generating a corresponding reference plane image according to the size parameter and the zero plane of the original image of the refractory brick; performing difference betweenthe original image of the refractory brick and the reference plane image, and obtaining a point cloud data graph after the inclination correction process; carrying out filtering segmentation on the height histogram of the point cloud after the inclination correction process to obtain the point cloud information with a preset depth; marking communicated areas according to the point cloud information of the preset depth through adopting the double scanning method, calculating the area of the communicated areas at each depth, and obtaining defect data. According to the invention, the identification method for identifying the depth defect of the refractory brick is provided.

Description

technical field [0001] The invention relates to a method for identifying depth defects of refractory bricks based on height histogram segmentation. 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. [0003] During the production process of refractory bricks, some deep defects will be caused due to the loss of molds: pits, pockmarked surfaces and missing corners and edges. As time goes by, the penetrating corrosion phenomenon will become more and more severe, which will eventually affect the service life of refractory bricks and affect the quality and efficiency of iron and steel smelting. At present, many defects are judged by workers relying on experience, which is greatly influenced by subjectivity, and it is impossible to establish a unified evaluation standard. In add...

AI Technical Summary

Problems solved by technology

As time goes by, the penetrating corrosion phenomenon will become more and more severe, which will eventually affect the service life of refractory bricks and affect the quality and efficiency of iron and steel smelting

At present, many defects are judged by workers relying on experience, which is greatly influenced by subjectivity, and it is impossible to establish a unified evaluation standard

In addition, in the process of mass production, this process not only consumes a lot of labor costs, but also repetitive and monotonous measurement and observation work can easily cause personnel fatigue and misjudgment. Serious economic loss, even seriously affecting the production of steel

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