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A bar counting method based on machine vision

A counting method and machine vision technology, applied in the direction of instrumentation, calculation, image data processing, etc., to achieve the effect of improving accuracy, maintaining corporate reputation, and avoiding interference

Inactive Publication Date: 2018-07-03
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at many problems existing in traditional manual counting and photoelectric detection counting, the present invention proposes a bar counting method based on machine vision

Method used

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  • A bar counting method based on machine vision
  • A bar counting method based on machine vision
  • A bar counting method based on machine vision

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Embodiment Construction

[0037] The present invention will be further described in detail below in conjunction with the drawings.

[0038] figure 1 It is the overall flow chart of the present invention, including collecting bar images, performing preprocessing such as smoothing, binarization and morphological operations on the image, calculating the relative displacement of the bar, analyzing the connected domain of the bar, and comparing it with the previous frame bar. Material comparison and matching count. If the count value has not reached the number of splits, continue the above operation counting in the next frame, until the count value reaches the number of splits, control the conveyor chain to stop, determine the position of the splitting line, and control the splitting machine to proceed After the initial steel splitting, judge whether the result of the initial steel splitting is correct. If it is not correct, perform the initial steel splitting until the final steel splitting result is correct, ...

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Abstract

The invention provides a bar counting method based on machine vision. The method comprises the steps of acquiring end face images of bars, pre-processing the images, calculating the relative displacement of the bars, analyzing a connected area, counting matched bars, determining the positions of steel bar splitting lines, judging whether the primary steel bar splitting result is accurate or not and the like. Pre-processing of the images comprises smoothing, binaryzation and morphological operation; and analysis of the connected area comprises the steps of splitting stuck bars into single bars and then analyzing the information of the single bars using the connected area again. The method based on machine vision technology realizes automatic counting of bars and judgment of the steel bar splitting result, effectively solves the problems of overlapping and crossing of bars, is high in speed and accuracy, small in modification of a production line and easy to maintain, and greatly reduces the manpower cost of enterprises in production.

Description

Technical field [0001] The invention relates to the field of counting in the bar production process, in particular to a bar counting method based on machine vision. Background technique [0002] Bars are the steel products with the largest consumption in my country. The bar products produced by steel rolling enterprises are usually rolled with negative deviation, bundled at fixed ends and delivered with theoretical weight. This is also the common demand of manufacturers and customers. Therefore, the actual bar products Accurate counting before bundling is very important. [0003] At present, steel mills in my country mainly use manual counting and photoelectric detection in bar counting. Most enterprises use manual counting. Manual counting is due to the high labor intensity and low work efficiency of workers, and the speed of the chain bed for conveying bars Mismatch, unable to meet the real-time requirements of online bar counting, has become a speed bottleneck in the automated ba...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/11G06T7/187G06T7/62G06T7/66
Inventor 周晓锋吴阳张宜弛史海波
Owner SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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