A method of counting bars

Abstract

The invention discloses a bar material counting method, comprising the following steps: contour tracking; calculation of the minimum enclosing circle; construction of a template and counting. The invention adopts the self-adaptive minimum enclosing circle to approach the bar end face strategy. The contour of the binary image obtained by contour tracking of the original image, the minimum enclosing circle is calculated for polygonal approximation, and the minimum enclosing circle is used to identify the end face of the bar, so as to adaptively extract the radius template of the end face of the bar. Regardless of the size of the end face of the bar, a minimum enclosing circle is adaptively obtained according to the end face to approach the end face, and the error is not more than ±4%. The present invention adopts the bar end face template matching strategy, obtains the bar end face template through iteration, and the average radius of the template is Avg, and iterates in the radius of the enclosing circle of the steel bar end face within the range of 0.5*Avg and 1.5*Avg, effectively ensuring the whole bar The bar counting problem in the case that the size of each bar end face is not completely consistent, the accuracy reaches 99.5%.

Description

technical field [0001] The invention relates to a counting technology, in particular to a rod counting method. Background technique [0002] Steel is the most widely used functional material in today's human society, and it is also an irreplaceable structural material in various building industries. Especially in today's rapid development of my country's iron and steel industry, steel bar is one of the main products produced by the iron and steel industry. Its output and quality play a vital role in improving the market position of the iron and steel industry in international competition and increasing the interests of the country. Obviously, the accurate counting of steel bars is of great significance to the production and sales of steel bars, and it is also an important basis for checking output and calculating profits. [0003] At present, the counting of the whole bundle of steel bars is still mainly performed by manual counting, which is not only slow, labor-intensive,...

AI Technical Summary

Problems solved by technology

[0003] At present, the counting of the whole bundle of steel bars is still mainly performed by manual counting, which is not only slow, labor-intensive, and inefficient, but also in the long-term highly concentrated counting process, the human eyes and brain are easily tired, not only counting errors It will greatly increase, and the nature of this labor will also cause great harm to the body of the laborer, and this manual counting method is not only costly, but also a waste of human resources

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