Method and device for detection of foreign matters based on image identification

Abstract

The present invention discloses a method for detection of foreign matters based on image identification. The method comprises: collecting images of a device to be detected and storing the images of a device to be detected; generating a standard background image according to the images, performing difference comparison of the images and the standard background image, if an all-nonzero comparison diagram is obtained, isolating foreign matter images according to a preset segmentation rule, extracting position information and area information of the foreign matters at the surface of the device to be detected according to the foreign matter images, determining whether the foreign matters at corresponding positions are pseudo foreign matters generated by light and shadow interference or not according to the position information, if the foreign matters at corresponding positions are not pseudo foreign matters generated by light and shadow interference, continuously determining whether the area information of the foreign matters is in a preset range with pixel points having the least amount of foreign matters or not, and if the area information of the foreign matters is in the preset range with pixel points having the least amount of foreign matters, determining that there are foreign matters at the corresponding positions. The method and device for detection of foreign matters can detect whether there are foreign matters at the surface of the device to be detected or not so as to facilitate timely discovering foreign matters on the device to be detected in the production process and reduce the loss because the foreign matters cannot be timely discovered. The present invention further discloses a device for detection of foreign matters based on image identification corresponding to the method mentioned above.

Description

technical field [0001] The invention relates to the field of foreign object detection, in particular to an image recognition-based foreign object detection method and device. Background technique [0002] In production and life, during the use of many equipment, due to the presence of foreign objects on the surface of the equipment, the equipment will be worn or even damaged, or the product will be adversely affected. For example, metal foreign objects on the radio frequency coil will interfere with the electromagnetic waves emitted by the radio frequency coil; foreign objects on the airstrip will cause destructive effects on high-speed moving aircraft. [0003] Therefore, people need to find foreign matter on the surface of the equipment in time, and then deal with it in time to avoid damage to the equipment or products. [0004] The foreign object detection technology in the prior art is mostly used in the field of airstrip detection. It is aimed at large-area foreign obj...

AI Technical Summary

Problems solved by technology

[0004] The foreign object detection technology in the prior art is mostly used in the field of airstrip detection. It is aimed at large-area foreign objects such as luggage packages and animal carcasses such as birds, for example, and for small devices such as wireless charging coils, such as coins. There is still a gap in the detection method and device for small foreign objects such as paper clips and paper clips

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