Hot-rolled steel plate surface defect image identification method based on neighborhood information estimation
A technology of neighborhood information and hot-rolled steel plates, which is applied in the direction of optical testing of defects/defects, can solve the problems of lower recognition rate stability, non-concentration, and lower recognition rate, so as to solve the change of defect characteristics and resist the influence of noise interference Effect
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[0036] An embodiment of the present invention will be further described below in conjunction with the accompanying drawings.
[0037] An image recognition method for surface defects of hot-rolled steel sheets based on neighborhood information evaluation, such as figure 1 shown, including the following steps:
[0038] Step 1. Use a linear array industrial CCD camera to collect the surface image of the steel plate;
[0039] Step 2, using the image grayscale projection method to detect the collected steel plate surface image to determine whether it is a defect image, if so, perform step 3, otherwise delete the image;
[0040] The image grayscale projection method is often used in practical applications. This method is simple and fast, and is more effective for line defects, especially when the line defects are in horizontal or vertical positions. The main principle of this method is: project the pixel gray value of the image along the X direction and the Y direction respectivel...
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