Special-shaped blank surface quality control method, system and device

Abstract

The invention provides a method, a system and a device for controlling the surface quality of a special-shaped blank. The method comprises the following steps: acquiring a first image for measuring the surface size of the special-shaped blank and a second image for detecting the surface defect of the special-shaped blank; common features in the second images are extracted through a shared convolutional network, then the images including the common features serve as input of a first grouped convolutional network, convolutional layers are set according to the number of defect categories, and defect feature graph groups of the corresponding categories are extracted; and finally, inputting the first image into a second grouped convolutional network, and classifying the output defect feature graph group by adopting the grouped convolutional network to obtain defect type information contained in the second image. And finally obtaining a surface quality detection result of the special-shaped blank. Based on the method, the invention further provides a special-shaped blank surface quality control system and device. According to the invention, the fusion of the line structured light and the deep learning algorithm based on the dual-channel image is realized, and the physical dimension measurement and surface defect detection of the special-shaped blank are realized at the same time.

Description

technical field [0001] The invention belongs to the technical field of profiled blank quality detection, and in particular relates to a profiled blank surface quality control method, system and device. Background technique [0002] With the rapid development of the economy and the deepening of supply-side reforms, the demand for high-quality steel in various fields such as automobiles and real estate is increasing. Profiled blank is an economical section and high-efficiency profile with optimized cross-sectional area distribution and reasonable strength-to-weight ratio. It is widely used in high-rise buildings, offshore platforms, power equipment and other fields. In the production process of special-shaped blanks, various defects will inevitably occur, and the physical size measurement of special-shaped blanks is also indispensable. The physical dimension measurement and surface quality inspection and control of blanks are becoming more and more important. [0003] Due to...

AI Technical Summary

Problems solved by technology

But on the other hand, the technical means disclosed in the prior art are limited to the detection of surface defects of special-shaped blanks, and there is no corresponding control measure for the detected defects, and at the same time, there is no physical dimension measurement of special-shaped blanks.

Images