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An intelligent method for judging the surface quality of cold-rolled strip steel

A technology of cold-rolled strip and determination method, applied in image analysis, image enhancement, instrument and other directions, can solve problems such as affecting the accuracy of intelligent determination, and achieve the effect of improving accuracy and broad application prospects

Active Publication Date: 2022-07-19
PANGANG GRP XICHANG STEEL & VANADIUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This seriously affects the accuracy of intelligent judgment

Method used

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  • An intelligent method for judging the surface quality of cold-rolled strip steel
  • An intelligent method for judging the surface quality of cold-rolled strip steel
  • An intelligent method for judging the surface quality of cold-rolled strip steel

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Embodiment

[0072] The surface quality detector is used to detect the surface defects of the cold-rolled strip steel. The surface inspection instrument can only identify the defects, but does not aggregate the defects; according to the output results of the surface inspection instrument, the diameter of the largest spot defect is only 50mm. ; However, a large number of speckle defects are found on the edge by manual observation, and the defect is determined to be a continuous large-area edge defect (the detection result is that the defect is still an isolated point defect point, and it is difficult to directly give an edge speckle defect. definition of the web range).

[0073] The above technical solutions of the present invention are used to aggregate the polymerizable speckle defects (after screening out some defects by using the edge distance, and then using DBSCAN to perform defect aggregation), the aggregated defects are obtained, and the covered length is 150000mm, occupying the surf...

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Abstract

The invention provides an intelligent method for judging the surface quality of cold-rolled strip steel, comprising the following steps: a) after summarizing the obtained arbitrary defect information, performing defect aggregation, and outputting the defects after aggregation; the method of defect aggregation is based on DBSCAN Density aggregation of the algorithm; b) Judging the surface quality of the cold-rolled strip according to the output defects after aggregation. Compared with the prior art, the intelligent judging method for the surface quality of cold-rolled strip steel provided by the present invention can realize reliable and effective aggregation of speckle-like defects on the surface of cold-rolled strip steel, thereby providing more accurate speckle-like defect seriousness. information to improve the accuracy of intelligent judgment. The method for judging the aggregation of "edge spots" defects provided by the invention is the first in the intelligent judgment of the surface quality of cold-rolled strip steel, lays a foundation for the intelligent judgment of the surface quality of cold-rolled strip steel, and can be used in cold-rolled strip steel. It is widely used in the field of application and has broad application prospects.

Description

technical field [0001] The invention relates to the technical field of surface quality inspection of cold-rolled strip steel, and more particularly, to an intelligent determination method for the surface quality of cold-rolled strip steel. Background technique [0002] The judgment data of the intelligent judging system for the surface quality of cold-rolled strip comes from the surface quality detector. Due to the particularity of speckles on the surface of cold-rolled strips, it is difficult for surface quality detectors to accurately identify them. In the traditional manual inspection and determination process, combined with the inspection results of the surface quality inspector, the inspection results are magnified several times, and then the determination is made according to the distribution characteristics of speckle defects and the macroscopic distribution position on the surface of the strip. This seriously affects the accuracy of intelligent judgment. SUMMARY O...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00G06T7/136G06T7/187
CPCG06T7/0006G06T7/136G06T7/187G06T2207/30136
Inventor 王波陈俊刘挺金成
Owner PANGANG GRP XICHANG STEEL & VANADIUM CO LTD