A method and device for repeat counting identification of steel billets

Abstract

Embodiments of the present application disclose a method and device for determining repeated counting of steel billets. The method includes acquiring a billet image captured by a camera, and selecting a rectangular verification area and a rectangular counting area in sequence along the transportation direction of the steel billet for the billet image. All billet contours in the counting area are counted. If the counting result is zero, the area size of each billet contour to be counted in the rectangular counting area of ​​the previous billet image is obtained, and all billet contours in the rectangular verification area are extracted, and Obtain the center of gravity of each billet contour; redefine the circular verification area, and set the billet contour with the largest area in the circular verification area as the billet contour to be identified; if there is something to be counted in the rectangular counting area of ​​the previous billet image If the area difference between the billet contour and the billet contour to be determined is within the preset area difference range, the billet contour to be determined will be counted repeatedly. This method can effectively prevent the billet profile from being counted repeatedly.

Description

technical field [0001] The present application relates to the technical field of machine vision, and in particular to a method and device for distinguishing double counting of steel slabs. Background technique [0002] Continuous casting refers to the process in which the molten steel smelted in a steelmaking furnace is successively cast by a continuous caster and rolled by a rolling mill to form multiple shaped billets. see figure 1 As shown, when a plurality of steel billets 3 smelted in a steel furnace are transported to the billet splitting device 2 through the cooling bed 1 in sequence, the control system will send in-position signals in sequence, and at this time, the iron teeth on the billet splitting device 2 will separate the billets one by one. Remove the roots and transport them away. In order to count and settle the steel billets of a shift or pouring time, the steel billets are usually counted during the transportation of the steel billets. [0003] At presen...

AI Technical Summary

Problems solved by technology

In this case, the billet between the two iron teeth on the billet splitting device may have been counted by the proximity switch when it is not transported in the opposite direction. When the fault is eliminated, the billet will be transported to the billet splitting device again and will be counted repeatedly , resulting in an error in the count result

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