A method and system for out-of-square detection based on point cloud data processing
A point cloud data and data preprocessing technology, applied in image data processing, image analysis, image enhancement, etc., can solve problems such as faults in the rolling process, manual billet removal errors, etc.
Inactive Publication Date: 2021-03-16
EAST CHINA JIAOTONG UNIVERSITY
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[0008] In order to solve the deficiencies in the disclosed technology and the technical problems of faults in the rolling process due to operational errors in manual stripping detection, this application discloses a stripping detection method and system based on point cloud data processing through the following embodiments
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[0078] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0079] The first embodiment of the present application discloses a method of out-of-square detection based on point cloud data processing, see image 3 As shown in the workflow diagram, the method includes:
[0080] Step S301. After receiving the in-position signal, control the 3D vision device 23 to take images of the billet, acquire the original point cloud data of the billet 3, and perform data preprocessing. Wherein, the in-position signal is sent when the ...
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This application provides a method and system for square off detection based on point cloud data processing. Sensors are installed on one side of the furnace entering roller table to detect that the billet is transported from the conveyor belt to the furnace entering roller table; at the end of the furnace entering roller table The 3D vision equipment is installed inside, and the billet located on the roller table into the furnace is photographed by the 3D vision device to obtain the billet image, and the point cloud data is obtained from the billet image; the vertical If there are two absolute vertical ridges on the end face of the billet, the angle between the two intersecting ridges is determined according to the point cloud data of any two intersecting ridges on the end face of the billet; if If the included angles all conform to the first preset angle range, the steel billet is determined to be a qualified billet. The application can realize the detection of stripped billets, and automatically reject the identified stripped billets, thereby reducing labor costs, reducing potential safety hazards, and improving the accuracy of stripped billet detection.
Description
technical field [0001] The present application relates to the field of steel billet detection, and in particular to a method and system for square detection based on point cloud data processing. Background technique [0002] The steel rolling heating furnace occupies an important position in the iron and steel enterprises. Its task is to heat the steel slab so that the temperature and temperature distribution of the steel slab meet the rolling requirements. The feeding device of the heating furnace is a device for transporting the billet to the heating furnace. It is mainly composed of a feeding platform, a steel retaining hook, a steel fork and a conveying roller table. Off-square, also known as rhomboid, refers to an out-of-tolerance defect in which square and rectangular rolled pieces evolve into parallelograms, trapezoids or rhombuses because the four corners do not form 90°. In the charging billet, the falling billet is always an important hidden danger affecting the h...
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IPC IPC(8): G06T7/00G06T7/11G06T7/187G06T5/00
CPCG06T5/002G06T7/0004G06T2207/10028G06T2207/30136G06T7/11G06T7/187
Inventor 刘志刚
Owner EAST CHINA JIAOTONG UNIVERSITY