Method for automatically detecting adhesion defect of label of flat wine bottle

A label pasting and automatic detection technology, which is applied in the direction of optical testing for flaws/defects, can solve problems such as label pasting defects that cannot be flattened, and achieve fast results

Active Publication Date: 2014-04-02
平邑仁安中医药产业发展有限公司
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  • Claims
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Problems solved by technology

[0003] In order to overcome the problem that the existing labeling defect detec

Method used

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  • Method for automatically detecting adhesion defect of label of flat wine bottle
  • Method for automatically detecting adhesion defect of label of flat wine bottle
  • Method for automatically detecting adhesion defect of label of flat wine bottle

Examples

Experimental program
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Embodiment

[0061] Such as figure 1 As shown in the lighting imaging system, the white light emitted by the LED ring light 1 passes through the small hole 2 and shines on the flat wine bottle 3, and then the CCD camera obtains the image through the reflected light, and then the computer 6 preprocesses the obtained image , and finally calculate the pose relationship between the special point and the label in the preprocessed image, and compare it with the correct pose relationship between the special point and the label in reality, so as to obtain the result.

[0062] Such as Figure 4 As shown, the implementation steps are as follows:

[0063] 1. Find the midpoint coordinates of the top edge of the bottle cap area to determine the bottle cap vertex 7 and the central axis of the flat wine bottle, and then use the pose relationship between the bottle cap area and the label area when the label is correctly pasted in practice to find the label area There are three other points located direc...

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Abstract

The invention discloses a method for automatically detecting the adhesion defect of a label of a flat wine bottle. According to the method, a lighting image acquisition system, an image processing system and an algorithm processing system are adopted, wherein the lighting image acquisition system is used for acquiring an image of a labeled wine bottle; the image processing system is used for preprocessing the obtained image of the wine bottle through image contrast stretching conversion, image noise reduction processing, image threshold processing and image filling processing in sequence; the algorithm processing system is used for positioning a body of the wine bottle and a set point in the image of the wine bottle, and comparing a position relation between a special point during correct adhesion of a label and the label with a position relation between a special point in the image needing to be detected and the label so as to judge whether the label has the adhesion defect. The method can be used for detecting the adhesion defect of the label of the flat wine bottle, which cannot be detected through a common label detection method and an ordinary visual detection method.

Description

technical field [0001] The invention relates to an automatic detection method for label sticking defects of flat wine bottles, which relates to the field of packaging detection. Background technique [0002] Because the flat glass wine bottle is not a cylindrical rotating body, when pasting the label on it, it is necessary to ensure the relative pose between the label and the bottle body. If the label is pasted tilted, offset or missed, the bottle will be considered defective. At present, related manufacturers, such as: Jinjiu, etc., generally use a large number of manual inspections on the production line to detect the labeling defects of the bottle body, which is labor-intensive, prone to fatigue, and low in efficiency. At present, there are already effective automatic detection methods for the detection of label sticking quality of symmetrical rotary glass products, such as beer bottles, etc. However, due to the label on the symmetrical rotary glass bottle, it only need...

Claims

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Application Information

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IPC IPC(8): G01N21/88
Inventor 陈从平邹雷黄正吴刚
Owner 平邑仁安中医药产业发展有限公司
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