Magnetic material size defect detection method and device, detection equipment and readable storage medium

Abstract

The invention provides a magnetic material size defect detection method and device, detection equipment and a readable storage medium. The method comprises the steps of obtaining a to-be-processed image of a magnetic material; extracting a contour of a magnetic material from the to-be-processed image, further extracting boundary points of junctions of two adjacent edges in the contour, segmentingthe contour according to the boundary points to obtain a plurality of segmented edges, and finally, carrying out flatness detection on to-be-detected edges in the plurality of segmented edges to obtain evaluation indexes of the arch size defects of the to-be-detected edges. After the evaluation index is obtained, the defect degree of the arch size defect can be quantitatively evaluated according to the evaluation index, so that the defect degree of the arch size defect of each to-be-detected edge is accurately controlled, the influence of subjective factors of detection personnel is eliminated, and the detection accuracy is more reliable. Meanwhile, the scheme of the embodiment of the invention can be automatically realized, and compared with a traditional manual detection method, the detection efficiency is higher, the labor investment is also reduced, and the labor intensity is reduced.

Description

technical field [0001] The present application relates to the technical field of image processing, in particular, to a method, device, detection equipment and readable storage medium for detecting size defects of magnetic materials. Background technique [0002] Modern magnetic materials are widely used in the design and manufacture of instruments, electricians, soft switches, automatic control and aerospace instruments. With the development of industry, the requirements for the size of magnetic materials are getting higher and higher. Accurate measurement of the size of magnetic materials plays an important role in the manufacture of precision electronics and precision machinery. In the preparation process of rare earth magnetic materials, there is a sintering process in the front-end process. After sintering, the magnetic materials may be deformed, usually in an arched shape, and this arched deformation is difficult to observe with the human eye. If the arch defect is mis...

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Problems solved by technology

[0004] The purpose of the embodiments of the present application is to provide a method, device, detection equipment, and readable storage medium for detecting magnetic material size defects, so as to solve the problems existing in the arch-shaped size defects of magnetic materials through manual detection. Affected by the subjective factors of the inspectors, the detection accuracy is difficult to control, and the detection efficiency is extremely low and the labor intensity is high.

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