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PE bottle detecting and sorting method based on machine vision

A technology of machine vision and defect detection, which is applied in the field of industrial robots and machine vision, can solve the problems of low precision and low work efficiency, and achieve the effects of good accuracy, high production efficiency, high accuracy rate and high degree of automation

Active Publication Date: 2017-06-13
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0004] In order to overcome the shortcomings of low precision and low work efficiency in the existing manual detection and sorting of PE bottles, the present invention provides a PE bottle detection and sorting method based on machine vision with high precision and high work efficiency

Method used

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  • PE bottle detecting and sorting method based on machine vision
  • PE bottle detecting and sorting method based on machine vision
  • PE bottle detecting and sorting method based on machine vision

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings.

[0028] refer to figure 1 with figure 2 , a kind of PE bottle detection and sorting method based on machine vision, described method comprises the steps:

[0029] (1) PE bottle image acquisition;

[0030] (2) PE bottle image preprocessing: filter and sharpen the collected images;

[0031] (3) Target positioning and recognition: Use the matching method based on the contour circumference to match and recognize the PE bottle image, and use the method based on the least squares method to fit the ellipse to complete the detection of the centroid position;

[0032] (4) Defect detection: using the equal circle method and completing the detection of defects at the mouth of PE bottles;

[0033] (5) Tracking and grabbing: According to the feedback position information, calculate the position of the online PE bottle in the Cartesian coordinate system to complete the online gr...

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Abstract

A PE bottle detecting and sorting method based on machine vision comprises the following steps that firstly, PE bottle images are collected; secondly, the PE bottle images are subjected to pretreatment, wherein the collected images are subjected to image smoothing and sharpening treatment; thirdly, target positioning and recognizing are carried out, wherein a matching method based on an outline perimeter is used for matching and recognizing the PE bottle images, and a method based on a least squares fit ellipse is used for completing mass center position detection; fourthly, defects are detected, wherein a circle evenly-dividing method is adopted to complete PE bottle opening defect detection; fifthly, tracking grabbing is carried out, wherein according to the fed back position information, the positions of online PE bottles on a cartesian coordinate system are calculated, and online grabbing is completed; and sixthly, classification placement is carried out, wherein feature information of each PE bottle is sent to a mechanical arm control system, sorting is carried out through a mechanical arm, and the PE bottles are put in different regions. According to the method, the detecting and sorting efficiency is high, safety is good, and PE bottle defect detecting and sorting work is effectively achieved.

Description

technical field [0001] The invention relates to the technical field of industrial robots and machine vision, in particular to a method for detecting and sorting PE bottles based on machine vision. Background technique [0002] With the advancement of technology, PE filling accuracy and sanitation have been greatly improved, but it still cannot meet the strict food production standards. In the newly produced filling products, there will be problems such as substandard filling rate or sealing defects. Once they enter the market and are eaten by people, they will endanger their health and damage the corporate image. [0003] The robot arm combined with the vision system makes the system more flexible. The robot arm replaces the transmission sorting mechanism, which reduces the difficulty of mechanical design and is easy to maintain. It can be used as an independent unit and transplanted to any assembly line or other stations. Contents of the invention [0004] In order to ov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B07C5/34B07C5/36
CPCB07C5/34B07C5/362B07C2501/0063
Inventor 陈建胡俊康王建勇赵晓李鑫陈琨
Owner ZHEJIANG UNIV OF TECH
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