Visual detection method for blanking of winding machine

Abstract

The invention discloses a winding machine blanking visual detection method. The method comprises the following steps of S1, acquiring a gray level image of the surface of a part at a blanking port of a winding machine, and transmitting an image signal to an image preprocessing module; S2, processing noise and distortion contained in the image signal by adopting a Gaussian smooth filtering method, inhibiting unnecessary deformation and enhancing image features; S3, using a Canny algorithm to carry out contour extraction on a part needing to be detected; S4, segmenting the image signal into fine paragraphs, then respectively measuring the paragraphs, and carrying out corner detection on the image signal through a KD corner detector; and S5, converting the actual curve segment of the image plane into a specific geometric parameter, and comparing the converted geometric parameter with the actual geometric parameter of the part so as to judge whether the part is qualified or not. The method is advantaged in that not only is a problem of universality solved, but also respective measurement of a plurality of quantities is realized at the same time.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a visual inspection method for winding machine unloading. Background technique [0002] In recent years, although the image-based visual measurement technology of part size has made great progress, most of them are based on the visual measurement technology under certain specific conditions, such as the measurement of circular parts, the measurement of cylindrical parts, the measurement of tube-hole parts and Shaft parts measurement, etc., are all measurement techniques performed under certain prior knowledge conditions. For the more general parts measurement technology, there are few studies at present, and the current industrialization is rapid, and the shape and structure of the parts are gradually becoming more complex and refined; therefore, for the measurement method that can only measure parts with a single shape lagging behind industrial demand. In addition, th...

AI Technical Summary

Problems solved by technology

For the more general parts measurement technology, there are few studies at present, and the current industrialization is rapid, and the shape and structure of the parts are gradually becoming more complex and refined; therefore, for the measurement method that can only measure parts with a single shape lagging behind industrial demand

In addition, the current measurement range of parts is relatively narrow, often for a quantity, such as the radius, height, inner diameter and other parameters mentioned above

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